7Baggers

Teradyne, Inc
(NASDAQ:TER) 

TER stock logo

Teradyne, Inc. designs, develops, manufactures, sells, and supports automatic test equipment worldwide. The company operates through Semiconductor Test, System Test, Industrial Automation, and Wireless Test segments. The Semiconductor Test segment offers products and services for wafer level and dev...

Founded: 1960
Full Time Employees: 5,500
Sector: Technology
Industry: Semiconductor Equipment & Materials

Share this website to your friends
• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
• EPS ttm:
• Book value per Share:
• Cash per Share:
• Current ast per Share:
• P/E ttm:
• P/E forward:
• P/E ttm high:
• P/E ttm low:
• P/S ttm:
• P/B ttm:
• P/FCF ttm:
• PEG ratio:
• Cash Ratio ttm:
• Quick Ratio ttm:
• Current Ratio ttm:
• Gross Mgn ttm:
• EBITDA Mgn ttm:
• Operating Mgn ttm:
• Net Income Mgn ttm:
• Trailing Div yield:
• Forward Div yield:
• Payout Ratio ttm:
• Ex-Dividend date:
• Target Price High:
• Target Price Low:
• Target Price Mean:
• Number of Analysts:
• Debt Ratio ttm:
• Debt to Equity ttm:
• Total Net Debt:
At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-29 2025-12-31 2025-09-28 2025-06-29 2025-03-30 2024-12-31 2024-09-29 2024-06-30 2024-03-31 2023-12-31 2023-10-01 2023-07-02 2023-04-02 2022-12-31 2022-10-02 2022-07-03 2022-04-03 2021-12-31 2021-10-03 2021-07-04 2021-04-04 2020-12-31 2020-09-27 2020-06-28 2020-03-29 2019-12-31 2019-09-29 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-07-01 2018-04-01 2017-12-31 2017-10-01 2017-07-02 2017-04-02 2016-12-31 2016-10-02 2016-07-03 2016-04-03 2015-12-31 2015-10-04 2015-07-05 2015-04-05 2014-12-31 2014-09-28 2014-06-29 2014-03-30 2013-12-31 2013-09-29 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-07-01 2012-04-01 2011-12-31 2011-10-02 2011-07-03 2011-04-03 2010-12-31 2010-07-04 2010-04-04 2009-12-31 2009-10-04 2009-07-05 2009-04-05 2008-12-31 2008-09-28 2008-06-29 2008-03-30 2007-12-31 2007-09-30 2007-07-01 2007-04-01 2006-12-31 2006-10-01 2006-07-02 2006-04-02 2005-12-31 2005-10-02 2005-07-03 2005-04-03 2004-12-31 2004-10-03 2004-07-04 2004-04-04 2003-12-31 2003-09-28 2003-06-29 2003-03-30 
                                                                                                
      revenues:
                                                                                                
      products
    1,142,971,000 943,472,000 632,104,000 522,657,000 561,958,000 626,754,000 612,871,000 596,877,000 458,433,000 530,510,000 551,982,000 540,375,000 473,418,000 591,491,000 676,252,000 697,954,000 625,875,000 758,674,000 825,448,000 951,945,000 660,508,000 647,625,000 697,745,000 734,630,000 610,906,000 548,551,000 488,170,000 457,511,000 393,442,000 420,652,000 470,994,000 434,051,000 403,925,000 388,282,000 412,854,000 610,356,000 373,204,000 303,667,000 334,610,000 456,832,000 358,139,000 244,510,000 386,488,000 437,243,000 272,325,000 253,163,000 402,987,000 452,488,000 255,386,000 211,710,000 365,825,000 363,087,000 214,300,000 179,063,000 393,037,000 480,578,000 330,891,000 228,212,000 274,944,000 341,316,000 315,719,000  391,148,000 268,204,000 210,117,000 205,304,000 115,148,000 64,735,000 125,421,000 228,854,000 248,779,000 232,991,000 198,148,000 239,299,000 229,504,000 195,172,000 200,208,000 295,396,000 329,139,000 300,768,000 4,905,000 330,983,000 269,665,000 256,063,000 316,640,000 397,438,000 466,802,000 364,496,000 295,815,000 271,319,000 271,523,000 277,231,000 
      services
    139,523,000 139,865,000 137,106,000 129,140,000 123,722,000 126,130,000 124,427,000 133,002,000 141,386,000 140,089,000 151,750,000 144,062,000 144,111,000 140,345,000 150,821,000 142,812,000 129,495,000 126,372,000 125,053,000 133,783,000 121,098,000 111,344,000 121,739,000 104,031,000 93,449,000 106,099,000 93,868,000 106,667,000 100,657,000 98,906,000 95,854,000 92,878,000 83,542,000 91,133,000 90,524,000 86,545,000 83,709,000 76,322,000 75,865,000 74,960,000 72,855,000 73,935,000 79,506,000 75,496,000 70,076,000 70,074,000 75,023,000 73,079,000 65,624,000 73,591,000 67,551,000 65,802,000 66,067,000 69,341,000 70,357,000 67,706,000 65,777,000 68,780,000 69,445,000 69,203,000 61,442,000  63,628,000 61,419,000 56,940,000 56,858,000 54,432,000 55,873,000 69,346,000 68,401,000 68,926,000 64,324,000 62,268,000 60,162,000 59,206,000 62,886,000 62,939,000 63,726,000 62,496,000 62,146,000 57,882,000 55,709,000 50,507,000 49,518,000 60,374,000 60,362,000 59,661,000 66,107,000 61,775,000 57,853,000 60,006,000 57,345,000 
      total revenues
    1,282,494,000 1,083,337,000 769,210,000 651,797,000 685,680,000 752,884,000 737,298,000 729,879,000 599,819,000 670,599,000 703,732,000 684,437,000 617,529,000 731,836,000 827,073,000 840,766,000 755,370,000 885,046,000 950,501,000 1,085,728,000 781,606,000 758,969,000 819,484,000 838,661,000 704,355,000 654,650,000 582,038,000 564,178,000 494,099,000 519,558,000 566,848,000 526,929,000 487,467,000 479,415,000 503,378,000 696,901,000 456,913,000 379,989,000 410,475,000 531,792,000 430,994,000 318,445,000 465,994,000 512,739,000 342,401,000                                                
      yoy
    87.04% 43.89% 4.33% -10.70% 14.31% 12.27% 4.77% 6.64% -2.87% -8.37% -14.91% -18.59% -18.25% -17.31% -12.99% -22.56% -3.36% 16.61% 15.99% 29.46% 10.97% 15.94% 40.80% 48.65% 42.55% 26.00% 2.68% 7.07% 1.36% 8.37% 12.61% -24.39% 6.69% 26.17% 22.63% 31.05% 6.01% 19.33% -11.91% 3.72% 25.87%                                                    
      qoq
    18.38% 40.84% 18.01% -4.94% -8.93% 2.11% 1.02% 21.68% -10.55% -4.71% 2.82% 10.83% -15.62% -11.51% -1.63% 11.31% -14.65% -6.89% -12.45% 38.91% 2.98% -7.38% -2.29% 19.07% 7.59% 12.48% 3.17% 14.18% -4.90% -8.34% 7.58% 8.10% 1.68% -4.76% -27.77% 52.52% 20.24% -7.43% -22.81% 23.39% 35.34% -31.66% -9.12% 49.75%                                                 
      cost of revenues:
                                                                                                
      cost of products
    453,447,000 408,828,000 270,634,000 232,422,000 224,142,000 256,759,000 253,129,000 250,236,000 200,763,000 227,390,000 239,827,000 217,011,000 198,665,000 247,326,000 277,539,000 274,674,000 243,016,000 310,247,000 333,229,000 388,845,000 267,784,000 274,574,000 300,174,000 322,732,000 259,996,000 226,184,000 197,196,000 193,299,000 165,368,000 170,064,000 195,339,000 180,777,000 180,958,000 166,668,000 169,744,000 267,171,000 154,966,000 127,481,000 148,266,000 215,795,000 167,555,000 120,322,000 170,963,000 181,491,000 118,996,000 131,337,000 182,591,000 202,411,000 124,448,000 93,461,000 150,365,000 158,411,000 96,793,000 92,599,000 169,782,000 206,498,000 174,001,000 125,091,000 138,617,000 159,995,000 153,363,000  167,160,000 123,696,000 112,896,000 125,116,000 92,635,000 56,160,000 77,888,000 130,105,000 124,925,000 118,307,000 100,867,000 117,268,000 112,338,000 100,296,000 100,193,000 144,050,000 159,123,000 151,983,000 -87,062,000 241,296,000 180,801,000 173,901,000 200,981,000 227,613,000 259,500,000 215,402,000 192,521,000 191,519,000 203,781,000 210,927,000 
      cost of services
    48,098,000 54,819,000 49,270,000 46,363,000 46,202,000 48,837,000 47,655,000 53,799,000 59,774,000 63,665,000 65,614,000 64,934,000 62,444,000 64,060,000 64,155,000 59,703,000 57,421,000 47,751,000 46,271,000 49,894,000 52,204,000 34,605,000 60,382,000 44,456,000 38,809,000 45,228,000 39,804,000 46,961,000 41,096,000 39,959,000 37,816,000 38,818,000 36,677,000 39,813,000 38,848,000 38,511,000 37,014,000 33,502,000 34,850,000 33,127,000 33,107,000 32,096,000 36,405,000 32,680,000 30,982,000 31,673,000 34,298,000 32,743,000 29,515,000 31,983,000 28,717,000 29,245,000 30,157,000 30,400,000 33,412,000 32,280,000 31,741,000 35,548,000 35,927,000 35,438,000 31,389,000  33,313,000 32,383,000 29,772,000 30,291,000 29,816,000 31,088,000 38,968,000 39,220,000 38,932,000 40,505,000 40,979,000 37,947,000 39,152,000 42,226,000 41,510,000 39,781,000 39,453,000 40,293,000 29,027,000 41,755,000 41,206,000 42,540,000 43,219,000 41,731,000 40,335,000 39,226,000 37,434,000 39,103,000 39,140,000 39,543,000 
      total cost of revenues
    501,545,000 463,647,000 319,904,000 278,785,000 270,344,000 305,596,000 300,784,000 304,035,000 260,537,000 291,055,000 305,441,000 281,945,000 261,109,000 311,386,000 341,694,000 334,377,000 300,437,000 357,998,000 379,500,000 438,739,000 319,988,000 309,179,000 360,556,000 367,188,000 298,805,000 271,412,000 237,000,000 240,260,000 206,464,000 210,023,000 233,155,000 219,595,000 217,635,000 206,481,000 208,592,000 305,682,000 191,980,000 160,983,000 183,116,000 248,922,000 200,662,000 152,418,000 207,368,000 214,171,000 149,978,000 163,010,000 216,889,000 235,154,000 153,963,000 125,444,000 179,082,000 187,656,000 126,950,000 122,999,000 203,194,000 238,778,000 205,742,000 160,639,000 174,544,000 195,433,000 184,752,000  200,473,000 156,079,000 91,276,500 155,407,000 122,451,000 87,248,000 122,998,500 169,325,000 163,857,000 158,812,000 111,750,250 155,215,000 151,490,000 142,522,000 143,670,750 183,831,000               
      gross profit
    780,949,000 619,690,000 449,306,000 373,012,000 415,336,000 447,288,000 436,514,000 425,844,000 339,282,000 379,544,000 398,291,000 402,492,000 356,420,000 420,450,000 485,379,000 506,389,000 454,933,000 527,048,000 571,001,000 646,989,000 461,618,000 449,790,000 458,928,000 471,473,000 405,550,000 383,238,000 345,038,000 323,918,000 287,635,000 309,535,000 333,693,000 307,334,000 269,832,000 272,934,000 294,786,000 391,219,000 264,933,000 219,006,000 227,359,000 282,870,000 230,332,000 166,027,000 258,626,000 298,568,000 192,423,000 160,227,000 261,121,000 290,413,000 167,047,000 159,857,000 254,294,000 241,233,000 153,417,000 125,405,000 260,200,000 309,506,000 190,926,000 136,353,000 169,845,000 215,086,000 192,409,000  254,303,000 173,544,000 124,389,000 106,755,000 47,129,000 33,360,000 77,911,000 127,930,000 153,848,000 138,503,000 118,570,000 144,246,000 137,220,000 115,536,000 121,444,000 175,291,000 193,059,000 170,638,000 120,822,000 103,641,000 98,165,000 89,140,000 132,814,000 188,456,000 226,628,000 175,975,000     
      yoy
    88.03% 38.54% 2.93% -12.41% 22.42% 17.85% 9.60% 5.80% -4.81% -9.73% -17.94% -20.52% -21.65% -20.23% -15.00% -21.73% -1.45% 17.18% 24.42% 37.23% 13.83% 17.37% 33.01% 45.55% 40.99% 23.81% 3.40% 5.40% 6.60% 13.41% 13.20% -21.44% 1.85% 24.62% 29.66% 38.30% 15.02% 31.91% -12.09% -5.26% 19.70% 3.62% -0.96% 2.81% 15.19% 0.23% 2.68% 20.39% 8.88% 27.47% -2.27% -22.06% -19.65% -8.03% 53.20% 43.90% -0.77%  -33.21% 23.94% 54.68%  439.59% 420.22% 59.66% -16.55% -69.37% -75.91% -34.29% -11.31% 12.12% 19.88% -2.37% -17.71% -28.92% -32.29% 0.51% 69.13% 96.67% 91.43% -9.03% -45.01% -56.68% -49.35%         
      qoq
    26.02% 37.92% 20.45% -10.19% -7.14% 2.47% 2.51% 25.51% -10.61% -4.71% -1.04% 12.93% -15.23% -13.38% -4.15% 11.31% -13.68% -7.70% -11.74% 40.16% 2.63% -1.99% -2.66% 16.26% 5.82% 11.07% 6.52% 12.61% -7.08% -7.24% 8.58% 13.90% -1.14% -7.41% -24.65% 47.67% 20.97% -3.67% -19.62% 22.81% 38.73% -35.80% -13.38% 55.16% 20.09% -38.64% -10.09% 73.85% 4.50% -37.14% 5.41% 57.24% 22.34% -51.80% -15.93% 62.11% 40.02% -19.72% -21.03% 11.79%   46.54% 39.52% 16.52% 126.52% 41.27% -57.18% -39.10% -16.85% 11.08% 16.81% -17.80% 5.12% 18.77% -4.86% -30.72% -9.20% 13.14% 41.23% 16.58% 5.58% 10.12% -32.88% -29.53% -16.84% 28.78%      
      gross margin %
    60.89% 57.20% 58.41% 57.23% 60.57% 59.41% 59.20% 58.34% 56.56% 56.60% 56.60% 58.81% 57.72% 57.45% 58.69% 60.23% 60.23% 59.55% 60.07% 59.59% 59.06% 59.26% 56.00% 56.22% 57.58% 58.54% 59.28% 57.41% 58.21% 59.58% 58.87% 58.33% 55.35% 56.93% 58.56% 56.14% 57.98% 57.63% 55.39% 53.19% 53.44% 52.14% 55.50% 58.23% 56.20% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% NaN% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% NaN% NaN% NaN% NaN% 
      operating expenses:
                                                                                                
      selling and administrative
    166,737,000 164,692,000 169,144,000 157,782,000 157,257,000 155,740,000 157,649,000 154,470,000 149,188,000 142,336,000 138,330,000 145,695,000 150,955,000 142,752,000 135,632,000 139,533,000 140,185,000 142,747,000 134,829,000 140,187,000 129,797,000 124,281,000 115,840,000 113,259,000 111,388,000 117,094,000 109,166,000 108,811,000 102,013,000 100,554,000 100,199,000 99,410,000 90,505,000 88,005,000 86,244,000 89,131,000 84,906,000 76,289,000 78,794,000 81,425,000 79,174,000 79,718,000 77,481,000 77,073,000 72,041,000 91,157,000 73,064,000 77,489,000 78,003,000 69,523,000 72,917,000 69,230,000 67,890,000 70,436,000 69,921,000 73,366,000 67,777,000 62,697,000 55,304,000 57,481,000 58,229,000  58,343,000 55,871,000 51,486,000 46,314,000 47,257,000 55,373,000 58,491,000 58,614,000 65,463,000 65,221,000 62,199,000 62,870,000 62,760,000 63,951,000 69,460,000 71,774,000 75,587,000 72,185,000 54,641,000 65,309,000 67,542,000 65,315,000 62,073,000 70,270,000 69,991,000 66,242,000 60,488,000 60,062,000 61,512,000 67,402,000 
      engineering and development
    135,561,000 143,265,000 124,760,000 118,382,000 118,188,000 128,387,000 117,474,000 111,816,000 103,199,000 102,208,000 104,413,000 105,706,000 105,762,000 108,810,000 111,715,000 111,951,000 108,116,000 109,965,000 107,220,000 110,021,000 100,402,000 100,794,000 94,909,000 94,102,000 85,159,000 86,794,000 77,804,000 81,434,000 76,791,000 74,706,000 77,049,000 75,342,000 74,408,000 70,564,000 77,190,000 81,728,000 76,182,000 70,052,000 71,400,000 76,109,000 73,464,000 70,941,000 74,027,000 75,832,000 71,450,000 79,187,000 71,953,000 73,414,000 67,085,000 64,613,000 68,918,000 67,773,000 62,751,000 61,660,000 63,055,000 66,532,000 60,135,000 53,431,000 46,799,000 47,393,000 47,977,000  50,393,000 49,052,000 40,920,000 38,266,000 38,451,000 47,198,000 52,189,000 52,969,000 56,154,000 55,149,000 50,420,000 52,245,000 52,417,000 50,199,000 49,638,000 53,289,000 53,581,000 52,194,000 41,601,000 56,259,000 60,915,000 64,240,000 63,149,000 67,243,000 66,914,000 64,694,000 60,963,000 61,248,000 63,804,000 68,585,000 
      acquired intangible assets amortization
    2,224,000 3,450,000 3,514,000 3,733,000 4,573,000 4,656,000 4,748,000 4,664,000 4,697,000 4,651,000 4,720,000 4,825,000 4,802,000 4,670,000 4,729,000 4,871,000 5,063,000 5,163,000 5,355,000 5,402,000 5,536,000 5,751,000 6,219,000 8,941,000 9,891,000 9,784,000 9,647,000 10,083,000 10,634,000 10,558,000 11,142,000 9,793,000 7,698,000 7,385,000 7,028,000 8,166,000 7,952,000 7,923,000 8,487,000 16,244,000 19,994,000 19,912,000 20,053,000 15,258,000 13,808,000 15,958,000 18,271,000 18,271,000 18,271,000 18,284,000 18,064,000 18,063,000 18,036,000                                        
      restructuring and other
    3,425,000 15,082,000 6,585,000 2,372,000 14,515,000 4,553,000 4,578,000 2,012,000 4,427,000 6,026,000 6,856,000 6,358,000 2,037,000 -2,369,000 1,796,000 2,044,000 15,714,000 12,738,000 1,197,000 2,507,000 -7,130,000 -15,117,000 -27,701,000 37,222,000 -7,606,000 -2,088,000 -6,500,000 -10,404,000 5,112,000 11,447,000 1,710,000 2,389,000 -313,000 8,970,000 -4,407,000 2,288,000 2,511,000 5,570,000 12,177,000 2,608,000 1,587,000 5,204,000 261,000 -385,000  1,198,000 -405,000 572,000  600,000 889,000 259,000 332,000 -317,000 683,000 -6,262,000 -1,825,000 5,046,000 1,465,000 1,279,000 413,000  1,700,000 1,264,000 69,000 5,189,000 15,270,000 15,965,000 9,675,000 28,589,000 12,726,000 11,785,000 -355,000 -3,119,000 568,000 2,417,000                 
      total operating expenses
    307,947,000 326,489,000 304,003,000 282,269,000 294,533,000 293,703,000 284,449,000 215,476,000 261,511,000 255,221,000 254,319,000 262,584,000 263,556,000 253,863,000 253,872,000 258,399,000 269,078,000 270,613,000 248,601,000 258,117,000 228,605,000 215,709,000 189,267,000 253,524,000 198,832,000 211,584,000 190,117,000 189,924,000 194,550,000 197,265,000 190,100,000 186,934,000 172,298,000 174,924,000 166,055,000 181,313,000 171,551,000 159,834,000 170,858,000 514,671,000 174,219,000 175,775,000 171,822,000 167,778,000 157,299,000 286,397,000 162,883,000 169,746,000 163,359,000 153,020,000 160,788,000 155,325,000 149,009,000 150,000,000 152,088,000 152,065,000 144,516,000 140,303,000 110,322,000 113,444,000 113,910,000  117,749,000 113,543,000    126,775,000                         
      income from operations
    473,002,000 293,201,000 145,303,000 90,743,000 120,803,000 153,585,000 152,065,000 210,368,000 77,771,000 124,323,000 143,972,000 139,908,000 92,864,000 166,587,000 231,507,000 247,990,000 185,855,000 256,435,000 322,400,000 388,872,000 233,013,000 234,081,000 269,661,000 217,949,000 206,718,000 171,654,000 154,921,000 133,994,000 93,085,000 112,270,000 143,593,000 120,400,000 97,534,000 98,010,000 128,731,000 209,906,000 93,382,000 59,172,000 56,501,000 -231,801,000 56,113,000 -9,748,000 86,804,000 130,790,000 35,124,000 -126,170,000 98,238,000 120,667,000 3,688,000 6,837,000 93,506,000 85,908,000 4,408,000 -24,595,000 108,112,000 157,441,000 46,410,000 -3,950,000 59,523,000 101,642,000 78,499,000  136,554,000 60,001,000 24,285,000 8,772,000 -62,063,000 -93,415,000 -383,187,000 -17,276,000 14,731,000 1,385,000    -17,731,000    47,356,000 42,096,000 -32,264,000 -40,487,000 -51,043,000 2,469,000 50,989,000 90,436,000 44,909,000 -8,906,000 -46,090,000 -50,086,000 -71,367,000 
      yoy
    291.55% 90.90% -4.45% -56.86% 55.33% 23.54% 5.62% 50.36% -16.25% -25.37% -37.81% -43.58% -50.03% -35.04% -28.19% -36.23% -20.24% 9.55% 19.56% 78.42% 12.72% 36.37% 74.06% 62.66% 122.07% 52.89% 7.89% 11.29% -4.56% 14.55% 11.55% -42.64% 4.45% 65.64% 127.84% -190.55% 66.42% -707.02% -34.91% -277.23% 59.76% -92.27% -11.64% 8.39% 852.39% -1945.40% 5.06% 40.46% -16.33% -127.80% -13.51% -45.43% -90.50% 522.66% 81.63% 54.90% -40.88%  -56.41% 69.40% 223.24%  -320.02% -164.23% -106.34% -150.78% -521.31% -6844.77%    -107.81%    -137.44%    -192.78% 1604.98% -163.28% -144.77% -213.66% -127.72% -210.63% -280.56% -162.93%     
      qoq
    61.32% 101.79% 60.13% -24.88% -21.34% 1.00% -27.71% 170.50% -37.44% -13.65% 2.90% 50.66% -44.25% -28.04% -6.65% 33.43% -27.52% -20.46% -17.09% 66.89% -0.46% -13.19% 23.73% 5.43% 20.43% 10.80% 15.62% 43.95% -17.09% -21.81% 19.26% 23.44% -0.49% -23.86% -38.67% 124.78% 57.81% 4.73% -124.37% -513.10% -675.64% -111.23% -33.63% 272.37% -127.84% -228.43% -18.59% 3171.88% -46.06% -92.69% 8.84% 1848.91% -117.92% -122.75% -31.33% 239.24% -1274.94% -106.64% -41.44% 29.48%   127.59% 147.07% 176.85% -114.13% -33.56% -75.62% 2118.03% -217.28% 963.61%         12.50% -230.47% -20.31% -20.68% -2167.36% -95.16% -43.62% 101.38% -604.26% -80.68% -7.98% -29.82%  
      operating margin %
    36.88% 27.06% 18.89% 13.92% 17.62% 20.40% 20.62% 28.82% 12.97% 18.54% 20.46% 20.44% 15.04% 22.76% 27.99% 29.50% 24.60% 28.97% 33.92% 35.82% 29.81% 30.84% 32.91% 25.99% 29.35% 26.22% 26.62% 23.75% 18.84% 21.61% 25.33% 22.85% 20.01% 20.44% 25.57% 30.12% 20.44% 15.57% 13.76% -43.59% 13.02% -3.06% 18.63% 25.51% 10.26% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% NaN% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% NaN% NaN% NaN% -Infinity% NaN% NaN% NaN% Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% 
      non-operating expense:
                                                                                                
      interest income
    -2,422,000 -3,078,000 -3,191,000 -4,351,000 -5,076,000 -5,114,000 -5,076,000 -6,715,000 -7,867,000 -8,862,000 -6,873,000 -6,354,000 -5,258,000 -3,407,000 -1,318,000 -951,000 -703,000 -561,000 -626,000 -633,000 -808,000 -793,000 -1,071,000 -1,368,000 -2,751,000 -6,144,000 -5,159,000 -5,430,000 -8,052,000 -9,084,000 -6,213,000 -5,427,000 -5,981,000 -6,476,000 -4,517,000 -3,292,000 -3,520,000 -3,095,000 -2,892,000 -1,666,000 -1,642,000 -2,016,000 -1,708,000 -1,674,000 -1,816,000 -10,483,000 1,922,000 1,266,000 1,036,000 1,206,000 948,000 903,000 1,072,000 1,256,000 1,067,000 874,000 893,000 878,000 3,049,000 1,403,000 1,287,000  3,681,000 842,000 497,000 1,003,000 1,141,000 777,000 2,274,000 2,740,000 2,932,000 4,612,000 8,711,000 7,784,000 9,299,000 10,099,000 11,029,000 12,453,000 11,659,000 9,483,000 5,572,000 3,972,000 3,841,000 4,405,000 4,542,000 3,784,000 3,470,000 3,591,000 3,025,000 3,510,000 3,299,000 4,179,000 
      interest expense
    3,151,000 3,937,000 1,309,000 805,000 795,000 589,000 808,000 1,530,000 661,000 812,000 963,000 1,045,000 987,000 1,015,000 779,000 913,000 1,012,000 2,466,000 3,785,000 5,566,000 6,004,000 6,351,000 6,237,000 6,043,000 5,551,000 5,950,000 5,682,000 5,800,000 5,713,000 13,182,000 5,557,000 5,639,000 6,890,000 5,380,000 5,372,000 5,509,000 5,402,000 1,603,000 633,000 691,000 710,000 762,000 508,000 444,000 162,000                            -60,000 -119,000 -74,000 -436,000 -701,000 -3,518,000 -3,470,000 -3,371,000 -3,583,000 -4,059,000 -4,153,000 -4,434,000 -4,529,000 -4,696,000 -4,895,000 -4,632,000 -4,568,000 -5,502,000 -5,402,000 -5,411,000 
      other expense
    6,597,000 2,766,000 -915,000 -2,270,000 6,060,000 313,000 -2,651,000 -3,850,000 12,075,000 -7,432,000 5,602,000 815,000                                                                                -2,699,000 
      income before income taxes and equity in net earnings of affiliate
    465,676,000 289,576,000 148,100,000 96,559,000 119,024,000 157,797,000 158,984,000                                                                                      
      income tax provision
    62,157,000 29,151,000 23,344,000 12,260,000 14,544,000 5,408,000 12,260,000 33,130,000 8,705,000 22,751,000 16,164,000 24,352,000 13,553,000 22,936,000 42,712,000 40,805,000 18,431,000 31,141,000 41,037,000 55,707,000 18,481,000 26,594,000 41,013,000 28,383,000  23,810,000 15,873,000 33,780,000  12,171,000 20,863,000 18,975,000 8,846,000    6,795,000    7,206,000 -8,216,000 15,955,000 29,257,000  8,776,500 17,721,000 20,187,000  5,969,750 18,093,000 13,801,000  15,667,250 14,384,000 40,605,000  3,771,000 1,759,000 7,839,000 5,486,000    -2,875,000 -1,500,000 -2,200,000 -7,800,000     129,500 293,000                   
      income before equity in net earnings of affiliate
    403,519,000 260,425,000 124,756,000 84,299,000 104,480,000 152,389,000 146,724,000                                                                                      
      equity in net earnings of affiliate
    -4,611,000 -3,205,000 -5,198,000 -5,927,000 -5,584,000 -6,136,000 -1,075,000                                                                                      
      net income
    398,908,000 257,220,000 119,558,000 78,372,000 98,896,000 146,253,000 145,649,000 186,273,000 64,197,000 117,054,000 128,116,000 120,050,000 83,531,000 172,301,000 183,485,000 197,787,000 161,928,000 224,040,000 256,718,000 328,319,000 205,512,000 196,332,000 222,718,000 188,908,000 176,191,000 125,073,000 135,860,000 97,397,000 109,138,000 143,788,000 119,981,000 101,037,000 86,974,000 -105,924,000 103,420,000 174,976,000 85,221,000 66,346,000 63,794,000 -223,546,000 49,986,000 -641,000 71,453,000 102,879,000 32,787,000 -103,811,000 82,949,000 101,205,000 929,000 22,343,000 69,459,000 66,556,000 6,589,000 -16,543,000 88,641,000 111,387,000 33,564,000 135,134,000 54,745,000 89,058,000 94,872,000  122,149,000 50,100,000 16,924,000 6,675,000 -66,768,000 -90,668,000 -388,591,000 -22,689,000 11,079,000 2,367,000 16,704,000 40,989,000 27,654,000 -7,636,000 10,874,000 60,565,000 82,405,000 44,913,000 224,062,000 -35,378,000 -45,464,000 -52,572,000 3,348,000 41,149,000 80,493,000 40,247,000 -11,492,000 -53,514,000 -52,489,000 -76,498,000 
      yoy
    303.36% 75.87% -17.91% -57.93% 54.05% 24.94% 13.69% 55.16% -23.15% -32.06% -30.18% -39.30% -48.41% -23.09% -28.53% -39.76% -21.21% 14.11% 15.27% 73.80% 16.64% 56.97% 63.93% 93.96% 61.44% -13.02% 13.23% -3.60% 25.48% -235.75% 16.01% -42.26% 2.06% -259.65% 62.12% -178.27% 70.49% -10450.39% -10.72% -317.29% 52.46% -99.38% -13.86% 1.65% 3429.28% -564.62% 19.42% 52.06% -85.90% -235.06% -21.64% -40.25% -80.37% -112.24% 61.92% 25.07% -64.62%  -55.18% 77.76% 460.58%  -282.95% -155.26% -104.36% -129.42% -702.65% -3930.50% -2426.34% -155.35% -59.94% -131.00% 53.61% -32.32% -66.44% -117.00% -95.15% -271.19% -281.25% -185.43% 6592.41% -185.98% -156.48% -230.62% -129.13% -176.89% -253.35% -152.61%     
      qoq
    55.08% 115.14% 52.55% -20.75% -32.38% 0.41% -21.81% 190.16% -45.16% -8.63% 6.72% 43.72% -51.52% -6.10% -7.23% 22.15% -27.72% -12.73% -21.81% 59.76% 4.68% -11.85% 17.90% 7.22% 40.87% -7.94% 39.49% -10.76% -24.10% 19.84% 18.75% 16.17% -182.11% -202.42% -40.89% 105.32% 28.45% 4.00% -128.54% -547.22% -7898.13% -100.90% -30.55% 213.78% -131.58% -225.15% -18.04% 10793.97% -95.84% -67.83% 4.36% 910.11% -139.83% -118.66% -20.42% 231.86% -75.16% 146.84% -38.53% -6.13%   143.81% 196.03% 153.54% -110.00% -26.36% -76.67% 1612.68% -304.79% 368.06% -85.83% -59.25% 48.22% -462.15% -170.22% -82.05% -26.50% 83.48% -79.96% -733.34% -22.18% -13.52% -1670.25% -91.86% -48.88% 100.00% -450.22% -78.53% 1.95% -31.39%  
      net income margin %
    31.10% 23.74% 15.54% 12.02% 14.42% 19.43% 19.75% 25.52% 10.70% 17.46% 18.21% 17.54% 13.53% 23.54% 22.18% 23.52% 21.44% 25.31% 27.01% 30.24% 26.29% 25.87% 27.18% 22.52% 25.01% 19.11% 23.34% 17.26% 22.09% 27.68% 21.17% 19.17% 17.84% -22.09% 20.55% 25.11% 18.65% 17.46% 15.54% -42.04% 11.60% -0.20% 15.33% 20.06% 9.58% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% NaN% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% -Infinity% 
      net income per common share:
                                                                                                
      basic
    2,550 1,630 750 490 610 900 890 1,180 420 770 830 780 540 1,110 1,170 1,240 1,000 1,380 1,560 1,980 1,230 1,180 1,340 1,140 1,060 740 800 570 630 790 650 530 450 -530 520 880 430 330 320 -1,100 240 10 340 480 150 -530 400 520  110 360 350 30 -90 470 600 180 730 300 480 370  680 280 100 40 -390 -530 -2,280 -130 60 10 90 220 150 -40 80 310 420 230             
      diluted
    2,530 1,620 750 490 610 900 890 1,140 400 720 780 730 500 1,050 1,100 1,160 920 1,270 1,410 1,760 1,090 1,050 1,210 1,050 970 680 750 550 620 780 630 520 430 -530 520 870 420 330 310 -1,100 240 10 340 480 150 -460 380 470  90 290 280 30 -80 390 490 150 600 250 390 290  550 240 100 40 -390 -530 -2,280 -130 60 10 100 220 140 -40 90 310 400 230             
      weighted-average common shares—basic
    156,410,000 159,119,000 158,595,000 159,967,000 161,501,000 159,083,000 163,002,000 157,804,000 153,047,000 154,310,000 153,762,000 154,760,000 155,904,000 158,434,000 156,364,000 159,563,000 162,048,000 164,960,000 164,583,000 165,995,000 166,491,000 166,120,000 166,014,000 165,789,000 166,589,000 170,425,000 169,641,000 171,241,000 173,532,000 187,672,000 185,744,000 190,730,000 195,255,000 198,069,000 197,485,000 198,774,000 200,005,000 202,578,000 202,211,000 203,018,000 204,271,000 211,544,000 210,032,000 213,845,000 217,187,000 202,908,000 207,381,000 194,408,000 193,311,000 190,772,000 191,307,000   186,878,000    184,683,000    179,924,000   173,604,000    170,593,000 168,769,000   184,020,000 183,566,000                   
      weighted-average common shares—diluted
    157,636,000 159,719,000 159,097,000 160,135,000 161,996,000 163,314,000 164,253,000 163,470,000 162,348,000 164,304,000 164,050,000 164,751,000 166,308,000 169,734,000 166,733,000 171,159,000 175,575,000 183,625,000 181,987,000 186,750,000 187,740,000 183,042,000 184,338,000 180,257,000 180,736,000 179,459,000 180,494,000 178,590,000 176,972,000 192,605,000 190,505,000 194,909,000 203,484,000 201,641,000 200,775,000 201,529,000 201,936,000 202,578,000 203,929,000 203,018,000 205,732,000 213,321,000 211,736,000 215,496,000 218,812,000 222,550,000 218,333,000 216,568,000 236,484,000 235,599,000 235,828,000   230,246,000    226,820,000    226,807,000   173,604,000    170,593,000 168,769,000   185,374,000 185,298,000                   
      gain on sale of business
         367,000  -57,486,000                                                                         -153,000  -612,000  -216,250  -865,000      
      income before income taxes
           219,403,000 72,902,000 139,805,000 144,280,000 144,402,000 97,084,000 195,237,000 226,197,000 238,592,000 180,359,000 255,181,000 297,755,000 384,026,000 223,993,000 222,926,000 263,731,000 217,291,000 197,069,000 148,883,000 151,733,000 131,177,000 93,979,000 111,126,000 140,844,000 120,012,000 95,820,000 98,083,000 127,437,000 206,877,000 92,016,000 58,885,000 59,681,000 -230,817,000 57,192,000 -8,857,000 87,408,000 132,136,000 42,438,000 -124,813,000 100,670,000 121,392,000 -1,873,000 41,620,750 87,552,000 80,357,000 -1,426,000          131,692,000 54,930,000   -68,968,000 -98,468,000        -6,236,000     -31,055,500 -32,351,000 -40,799,000 -51,072,000 3,741,000 50,077,000 89,437,000 44,719,000 -8,792,000 -51,314,000 -50,789,000 -75,298,000 
      non-operating income:
                                                                                                
      other income
                51,000 -26,258,000 5,849,000 9,436,000 5,187,000 -651,000 21,486,000 -87,000 3,824,000 5,597,000 764,000 -4,017,000 6,849,000 22,965,000 2,665,000 2,447,000 1,445,000 -2,954,000 3,405,000 176,000 805,000 1,023,000 439,000 812,000 -516,000 1,779,000 -921,000 -9,000 -147,000 363,000 596,000 -116,000 -5,660,000                            458,000   1,832,000                 
      cash dividend declared per common share
                       100 100   100 100     90 90 90 90 70 70 70 70 60 60 60 60 60 60 60 60 60 60  60                                            
      income tax benefit
                            20,878,000    -15,159,000     204,007,000 24,017,000 31,901,000  -7,461,000 -4,113,000 -7,271,000     9,651,000    -2,802,000    -8,015,000     -66,750   -267,000  9,543,000 4,830,000           210,000                  
      goodwill impairment
                                           254,946,000                                                     
      acquired intangible assets impairment
                                           83,339,000                                                     
      non-operating incomes:
                                                                                                
      net revenues:
                                                                                                
      total net revenues
                                                 331,146,750 478,010,000 525,567,000 321,010,000 285,301,000 433,376,000 428,889,000 280,367,000 248,404,000 463,394,000 548,284,000 396,668,000 296,992,000 344,389,000 410,519,000 377,161,000  454,776,000 329,623,000    120,608,000     210,466,000 299,461,000 288,710,000  278,417,750 359,122,000 391,635,000              
      interest expense and other income
                                                 1,657,000 -510,000                                              
      interest expense and other
                                                   541,000 6,597,000 13,128,000 -6,902,000 -6,454,000 -6,906,000 -6,946,000 -6,154,000 -6,323,000 -6,059,000 -6,134,000 -6,068,000 -5,316,000 -6,176,000  -8,543,000 -5,913,000 -5,158,000 -4,600,000 -8,046,000 -5,830,000 -8,371,000 -5,851,000 -484,000 470,000                     
      weighted-average common share—basic
                                                       190,569,000 189,686,000  187,364,000 186,573,000 185,838,000  185,102,000 185,367,000 184,720,000  179,990,000 176,867,000  174,495,000 173,022,000 172,130,000   170,644,000 173,762,000   189,391,000                  
      weighted-average common share—diluted
                                                       234,909,000 234,757,000  229,210,000 229,646,000 231,153,000  221,892,000 230,452,000 232,080,000  231,541,000 226,277,000  180,792,000 173,022,000 172,130,000   174,096,000 175,722,000   191,405,000                  
      acquired intangible asset amortization
                                                         13,821,750 18,429,000 18,429,000 18,429,000 5,334,000 6,754,000 7,291,000 7,291,000  7,313,000 7,356,000 6,166,750 8,214,000 8,214,000 8,239,000 3,417,750 5,034,000 4,774,000 3,863,000                     
      income from continuing operations before income taxes
                                                         -30,285,000 103,025,000 151,992,000 41,244,000 -9,206,000 56,504,000 97,729,000 73,610,000    19,624,000 5,175,000   -389,284,000 -20,387,000 17,179,000  14,957,000 39,915,000 30,700,000  10,864,000 74,281,000 91,782,000 53,468,000             
      income from continuing operations
                                                         -16,543,000 88,641,000 111,387,000 33,564,000 135,134,000 54,745,000 89,890,000 68,124,000    16,924,000 6,675,000   -388,591,000 -23,457,000 11,079,000 2,367,000 17,153,000 35,198,000 21,475,000  6,348,000 65,346,000 83,593,000 44,913,000             
      income from discontinued operations before income taxes
                                                                1,278,000            -449,000 6,084,000                   
      income from discontinued operations
                                                                1,545,000         768,000   -449,000 5,791,000 618,000   -3,886,000               
      gain on disposal of discontinued operations
                                                               -832,000 25,203,000                                
      income per common share from continuing operations:
                                                                                                
      basic
                                                         312.5 470 600  287.5 300 480                                 
      diluted
                                                         255 390 490  232.5 250 390                                 
      benefit from income taxes
                                                            7,680,000            3,317,500 3,070,000     3,454,000             4,472,000   1,700,000  
      net income per common share from continuing operations:
                                                                                                
      basic
    2,550 1,630 750 490 610 900 890 1,180 420 770 830 780 540 1,110 1,170 1,240 1,000 1,380 1,560 1,980 1,230 1,180 1,340 1,140 1,060 740 800 570 630 790 650 530 450 -530 520 880 430 330 320 -1,100 240 10 340 480 150 -530 400 520  110 360 350 30 -90 470 600 180 730 300 480 370  680 280 100 40 -390 -530 -2,280 -130 60 10 90 220 150 -40 80 310 420 230             
      diluted
    2,530 1,620 750 490 610 900 890 1,140 400 720 780 730 500 1,050 1,100 1,160 920 1,270 1,410 1,760 1,090 1,050 1,210 1,050 970 680 750 550 620 780 630 520 430 -530 520 870 420 330 310 -1,100 240 10 340 480 150 -460 380 470  90 290 280 30 -80 390 490 150 600 250 390 290  550 240 100 40 -390 -530 -2,280 -130 60 10 100 220 140 -40 90 310 400 230             
      net income per common share:
                                                                                                
      net revenues
                                                                    138,087,500 262,162,000 169,580,000  228,068,750 297,255,000 317,705,000 297,315,000    258,058,000    362,914,000 253,111,250 386,692,000 320,172,000 305,581,000 353,716,500 457,800,000 526,463,000 430,603,000 248,819,250 329,172,000 331,529,000 334,576,000 
      in-process research and development
                                                                        500,000   1,100,000    16,700,000                 
      operating expenses
                                                                    83,487,500 97,983,000 109,192,000  105,360,250 145,206,000 139,117,000 137,118,000 89,740,500 111,996,000 115,745,000 133,267,000 85,673,250 109,945,000 109,466,000 123,282,000 103,685,000 135,905,000 138,652,000 140,183,000 101,181,250 137,467,000 136,192,000 131,066,000     
      income from continuing operations per common share:
                                                                                                
      basic
                                                                    100 40   -2,280 -140 60 10 100 190 140                  
      diluted
                                                                    100 40   -2,280 -140 60 10 100 190 140                  
      income from discontinued operations before taxes
                                                                        192,000 768,000                       
      provision for income taxes
                                                                          6,100,000 4,100,000 -2,196,000 4,717,000  1,400,000 -10,000 9,830,000 9,377,000 8,555,000         2,700,000 2,200,000  1,200,000 
      income from continuing operations before taxes
                                                                           6,467,000                     
      operating income from continuing operations
                                                                            8,975,250 32,250,000                   
      shares used in net income per common share—basic
                                                                               189,625,000 -1,879,000 193,563,000 198,243,000 198,017,000             
      shares used in net income per common share—diluted
                                                                               189,625,000 -4,171,000 204,551,000 210,356,000 199,555,000             
      restructuring and other (credits) charges
                                                                                -8,979,250 -15,118,000 -19,702,000              
      net income from continuing operations per common share:
                                                                                                
      basic
                                                                                245 330 420 230             
      diluted
                                                                                240 330 400 230             
      restructuring and other charges
                                                                                   -1,097,000 -18,128,000 14,337,000 10,807,000 10,628,000 5,123,000 -46,000 152,000 130,000 15,090,000 23,330,000 13,378,000 19,486,000 
      other income and expense
                                                                                        1,259,000  426,000 851,000 1,657,000 -3,232,000 1,400,000  
      income tax expense
                                                                                    2,298,000 3,027,000 4,665,000 1,500,000 5,586,000 8,928,000 8,944,000      
      net income per common share—basic
                                                                                    -170 -180 -230 -270 20 210 410 210     
      shares used in calculations of net income per common share—basic
                                                                                    49,017,500 196,835,000 195,757,000 195,619,000 48,499,500 194,128,000 194,015,000 193,852,000     
      net income per common share—diluted
                                                                                    -170 -180 -230 -270 30 210 390 200     
      shares used in calculations of net income per common share—diluted
                                                                                    49,017,500 196,835,000 195,757,000 195,619,000 53,284,250 195,751,000 213,486,000 199,893,000     
      net revenue:
                                                                                                
      expenses:
                                                                                                
      cost of revenues
                                                                                            181,003,250 230,622,000 242,921,000 250,470,000 
      net loss per common share—basic and diluted
                                                                                            -50 -280   
      shares used in calculations of net loss per common share—basic and diluted
                                                                                            46,652,750 189,479,000   
      net income per common share—basic and diluted
                                                                                              -280  
      shares used in calculations of net income per common share—basic and diluted
                                                                                              185,465,000  
      net loss per common share – basic and diluted
                                                                                               -410 
      shares used in calculations of net loss per common share – basic and diluted
                                                                                               184,889,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-29 2025-12-31 2025-09-28 2025-06-29 2025-03-30 2024-12-31 2024-09-29 2024-06-30 2024-03-31 2023-12-31 2023-10-01 2023-07-02 2023-04-02 2022-12-31 2022-10-02 2022-07-03 2022-04-03 2021-12-31 2021-10-03 2021-07-04 2021-04-04 2020-12-31 2020-09-27 2020-06-28 2020-03-29 2019-12-31 2019-09-29 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-07-01 2018-04-01 2017-12-31 2017-10-01 2017-07-02 2017-04-02 2016-12-31 2016-10-02 2016-07-03 2016-04-03 2015-12-31 2015-10-04 2015-07-05 2015-04-05 2014-12-31 2014-09-28 2014-06-29 2014-03-30 2013-12-31 2013-09-29 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-07-01 2012-04-01 2011-10-02 2011-07-03 2010-07-04 2010-04-04 2009-12-31 2009-10-04 2009-07-05 2009-04-05 2008-12-31 2008-09-28 2008-06-29 2008-03-30 2007-12-31 2007-09-30 2007-07-01 2007-04-01 2006-12-31 2006-10-01 2006-07-02 2006-04-02 2005-12-31 2005-10-02 2005-07-03 2005-04-03 2004-12-31 2004-10-03 2004-07-04 2004-04-04 2003-12-31 2003-09-28 2003-06-29 2003-03-30 
                                                                                               
        assets
                                                                                               
        current assets:
                                                                                               
        cash and cash equivalents
      241,944,000 293,751,000 272,700,000 339,252,000 475,632,000 553,354,000 510,036,000 421,904,000 707,403,000 757,571,000 636,961,000 613,208,000 649,208,000 854,773,000 710,746,000 572,023,000 794,603,000 1,122,199,000 1,079,454,000 954,441,000 831,149,000 914,121,000 945,180,000 725,431,000 593,494,000 773,924,000 593,939,000 495,107,000 483,728,000 926,752,000 814,019,000 480,384,000 637,873,000 429,843,000 418,677,000 598,349,000 324,746,000 307,884,000 297,937,000 381,095,000 319,358,000 264,705,000 294,217,000 300,685,000 218,945,000 294,256,000 211,704,000 254,625,000 232,626,000 341,638,000 572,868,000 227,601,000 305,219,000 338,920,000 485,692,000 589,056,000 533,396,000 1,095,163,000 455,398,000 403,996,000 342,012,000 416,737,000 406,741,000 334,081,000 279,057,000 322,705,000 292,573,000 286,094,000 323,080,000 562,371,000 429,078,000 393,215,000 405,589,000 568,025,000 755,033,000 336,522,000 322,781,000 340,699,000 230,345,000 199,060,000 190,012,000 209,147,000 264,019,000 224,335,000 222,970,000 228,444,000 187,002,000 237,904,000 219,881,000 
        marketable securities
      3,653,000 28,247,000 25,017,000 28,638,000 32,145,000 46,312,000 41,631,000 38,654,000 41,300,000 62,154,000 79,570,000 95,199,000 92,895,000 39,612,000 65,310,000 209,846,000 282,016,000 244,231,000 233,397,000 282,121,000 478,293,000 522,280,000 287,789,000 229,791,000 211,001,000 137,303,000 342,538,000 400,227,000 421,088,000 190,096,000 418,410,000 712,309,000 860,526,000 1,347,979,000 1,217,830,000 809,338,000 895,578,000 871,024,000 598,501,000 442,154,000 410,003,000 477,696,000 525,381,000 452,040,000 649,219,000 533,787,000 594,801,000 488,439,000 462,150,000 586,882,000 384,334,000 501,148,000 404,781,000 431,516,000 344,850,000 105,947,000 87,223,000 96,536,000 453,942,000 161,778,000 118,461,000 46,933,000 5,735,000 38,982,000 41,668,000  15,502,000 19,780,000 31,510,000 75,593,000 187,176,000 187,134,000 76,654,000 47,766,000 65,051,000 280,659,000 321,227,000 354,042,000 91,291,000 73,224,000 47,455,000 75,431,000 86,215,000 104,849,000 67,281,000 60,974,000 52,204,000 53,673,000 58,601,000 
        accounts receivables
      1,107,522,000 786,913,000 593,800,000 433,001,000 460,397,000 471,426,000 484,376,000 470,297,000 426,333,000 422,124,000 455,878,000 493,234,000 455,334,000 491,145,000 530,349,000 683,739,000 546,881,000 550,749,000 597,124,000 868,457,000 581,509,000 497,506,000 587,243,000 694,521,000 487,365,000 362,368,000 357,886,000 372,199,000 333,840,000 291,267,000 352,476,000 454,122,000 413,978,000 272,783,000 268,068,000 405,946,000 314,962,000 192,444,000 163,213,000 349,547,000 253,976,000 211,293,000 245,233,000 296,654,000 175,783,000 151,034,000 321,312,000 300,767,000 216,524,000 157,642,000 209,386,000 228,208,000 166,614,000 153,423,000 205,464,000 346,124,000 221,547,000     125,236,000    109,625,000    189,487,000    158,939,000    232,462,000    223,491,000    229,532,000 225,366,000 220,575,000  
        inventories
      362,757,000 379,552,000 366,752,000 350,505,000 345,063,000 298,492,000 297,340,000 288,748,000 314,232,000 309,974,000 322,632,000 347,295,000 352,058,000 325,019,000 310,754,000 295,625,000 259,341,000 243,330,000 224,242,000 226,138,000 262,474,000 222,189,000 191,317,000 206,088,000 182,978,000 196,691,000 178,203,000 164,461,000 161,342,000 153,541,000 154,705,000 135,550,000 131,857,000 107,525,000 125,183,000 153,645,000 203,278,000 135,958,000                                                    
        prepayments
      438,577,000 427,564,000 469,240,000 412,981,000 423,729,000 429,086,000 489,548,000 515,906,000 537,642,000 548,970,000 593,366,000 560,682,000 549,114,000 532,962,000 502,678,000 498,093,000 479,414,000 406,266,000                 105,309,000 105,960,000 106,987,000 108,454,000 104,078,000 103,131,000 95,185,000 91,519,000 80,779,000 80,249,000 92,484,000 95,819,000 88,732,000 110,473,000 131,484,000 136,374,000 109,107,000                                       
        other current assets
      18,720,000 33,273,000 22,649,000 19,230,000 18,635,000 17,727,000 15,935,000 20,884,000 16,057,000 37,992,000 10,952,000 14,222,000 13,367,000 14,404,000 7,717,000 11,109,000 12,127,000 9,452,000                 5,021,000 6,787,000 8,602,000 8,039,000 6,393,000 7,681,000 3,513,000 6,194,000 4,135,000 6,596,000 6,959,000 6,582,000 7,304,000 4,989,000 12,249,000 7,324,000 11,873,000                                       
        total current assets
      2,173,173,000 1,949,300,000 1,750,158,000 1,583,607,000 1,755,601,000 1,816,397,000 1,838,866,000 1,756,393,000 2,065,393,000 2,162,035,000 2,099,359,000 2,123,840,000 2,111,976,000 2,257,915,000 2,127,554,000 2,270,435,000 2,374,382,000 2,576,227,000 2,521,184,000 2,699,472,000 2,501,103,000 2,415,434,000 2,243,632,000 2,094,007,000 1,702,578,000 1,658,884,000 1,654,579,000 1,616,826,000 1,594,042,000 1,732,482,000 1,879,395,000 1,894,185,000 2,156,425,000 2,270,281,000 2,140,088,000 2,080,025,000 1,854,153,000 1,623,803,000 1,285,188,000 1,412,886,000 1,242,722,000 1,259,968,000 1,336,657,000 1,316,386,000 1,321,156,000 1,243,846,000 1,401,021,000 1,354,627,000 1,261,247,000 1,440,277,000 1,494,380,000 1,282,203,000 1,207,450,000 1,236,061,000 1,311,267,000 1,316,808,000 1,120,991,000 1,555,824,000 1,343,428,000 965,317,000 786,533,000 762,292,000 742,048,000 603,733,000 633,142,000 678,653,000 697,494,000 707,357,000 734,094,000 944,933,000 971,012,000 909,654,000 754,765,000 889,410,000 1,171,713,000 1,037,904,000 1,050,669,000 1,094,942,000 845,784,000 799,294,000 753,092,000 805,826,000 931,731,000 943,150,000 826,531,000 769,277,000 716,202,000 781,468,000 784,865,000 
        property, plant and equipment
      585,724,000 562,999,000 569,939,000 559,813,000 541,520,000 508,171,000 491,704,000 472,457,000 457,248,000 445,492,000 436,449,000 437,077,000 432,381,000 418,683,000 415,181,000 411,263,000 399,485,000 387,240,000 390,545,000 395,395,000 402,465,000 394,800,000 386,170,000 353,595,000 332,241,000 320,216,000 307,567,000 295,895,000 283,300,000 279,821,000 278,071,000 285,302,000 281,284,000 268,447,000 259,080,000 258,017,000 253,548,000 253,821,000 261,821,000 264,555,000 266,907,000 273,414,000 275,089,000 291,929,000 308,264,000          847,711,000 827,608,000 809,249,000                                 
        operating lease right-of-use assets
      76,222,000 76,635,000 62,442,000 67,407,000 63,090,000 70,185,000 70,784,000 72,381,000 74,625,000 73,417,000 78,978,000 75,889,000 74,939,000 73,734,000 61,430,000 66,661,000 67,718,000 68,807,000 61,608,000 61,849,000 51,516,000 54,569,000 54,724,000 56,172,000 58,808,000 57,539,000 57,595,000 56,315,000 50,733,000                                                             
        deferred tax assets
      281,776,000 275,265,000 253,455,000 239,809,000 230,937,000 222,438,000 201,881,000 192,901,000 185,734,000 175,775,000 162,669,000 152,471,000 148,527,000 142,784,000 130,207,000 126,639,000 113,556,000 102,428,000 96,808,000 94,438,000 92,365,000 87,913,000 78,243,000 79,210,000 74,493,000 75,185,000 69,120,000 67,886,000 69,687,000 70,848,000 70,772,000 73,574,000 77,705,000 84,026,000 120,228,000 125,204,000 127,918,000     54,973,000 58,480,000 58,345,000 56,715,000 57,239,000 68,791,000 68,460,000 68,780,000 72,478,000 83,780,000 83,789,000 83,869,000 77,305,000 58,517,000 56,888,000 56,601,000 23,176,000 22,801,000 19,711,000 19,232,000  17,561,000 17,268,000 17,120,000  30,814,000                       
        retirement plans assets
      12,078,000 12,059,000 12,702,000 11,922,000 12,193,000 11,994,000 13,114,000 11,293,000 11,449,000 11,504,000 11,403,000 11,514,000 11,650,000 11,761,000 13,805,000 14,245,000 14,669,000 15,110,000 16,958,000 17,170,000 17,255,000 17,468,000 14,915,000 17,817,000 18,229,000 18,457,000 16,358,000 16,449,000 16,791,000 16,883,000 17,885,000 18,252,000 17,928,000 17,491,000 10,954,000  7,517,000 7,712,000 4,869,000 2,811,000 1,968,000 636,000 13,933,000 13,850,000 12,847,000 12,896,000 8,871,000 9,134,000 9,443,000 9,342,000 5,020,000 4,194,000 3,106,000 3,282,000             48,854,000 48,028,000 47,931,000 46,396,000 36,400,000 32,194,000 31,815,000 31,503,000                
        equity method investment
      522,583,000 537,098,000 538,001,000 545,414,000 509,626,000 494,494,000 538,351,000 524,060,000                                                                                  
        other assets
      70,743,000 71,697,000 73,118,000 54,503,000 51,832,000 49,620,000 48,384,000 47,923,000 45,098,000 38,580,000 37,581,000 32,699,000 27,922,000 28,925,000 29,311,000 26,942,000 23,480,000 24,096,000 23,340,000 21,320,000 8,942,000 9,384,000 11,650,000 11,854,000 9,272,000 10,332,000 22,724,000 25,712,000 11,279,000 11,509,000 11,421,000 12,192,000 12,479,000 12,275,000 12,028,000 12,429,000 12,175,000 12,165,000 12,777,000 13,074,000 13,041,000 13,080,000 13,096,000 13,364,000 10,280,000 10,419,000 9,853,000 10,927,000 10,574,000 14,591,000 19,763,000 19,051,000 18,583,000 20,209,000 17,853,000 20,035,000 20,460,000 17,277,000 16,644,000 15,307,000 17,853,000 19,361,000 18,669,000 18,751,000 17,974,000 19,534,000 25,102,000 25,632,000       38,756,000 39,819,000 41,046,000  40,450,000 44,179,000 44,368,000  48,541,000 49,834,000 51,973,000     
        acquired intangible assets
      48,979,000 51,271,000 54,708,000 58,233,000 17,971,000 15,927,000 21,288,000 25,465,000 30,234,000 35,404,000 39,165,000 44,611,000 49,246,000 53,478,000 55,580,000 62,509,000 69,846,000 75,635,000 81,677,000 88,121,000 92,850,000 100,939,000 103,672,000 107,563,000 114,321,000 125,480,000 96,573,000 109,494,000 119,372,000 125,482,000 139,963,000 148,173,000 84,413,000 79,088,000 85,729,000 90,603,000                                                      
        goodwill
      514,175,000 521,019,000 519,550,000 520,470,000 409,313,000 395,367,000 419,412,000 405,110,000 407,576,000 415,652,000 401,140,000 412,110,000 409,828,000 403,195,000 375,799,000 397,733,000 419,888,000 426,024,000 433,398,000 441,597,000 437,601,000 453,859,000 435,252,000 422,003,000 409,933,000 416,431,000 370,717,000 383,936,000 379,513,000 381,850,000 392,998,000 388,625,000 275,700,000 252,011,000 249,277,000 242,215,000 230,065,000 223,343,000 238,589,000 237,210,000 495,871,000 488,413,000 498,346,000 495,434,000 273,438,000 273,438,000 361,819,000 361,819,000 361,819,000 361,792,000 349,272,000 349,272,000 349,272,000 349,272,000 349,373,000 352,778,000 352,778,000          242,521,000 241,730,000 242,698,000 69,147,000 69,147,000 69,147,000 69,147,000 69,147,000 69,147,000 69,147,000 69,147,000 69,147,000 116,176,000 116,176,000 116,176,000 116,176,000 116,176,000 116,176,000 116,233,000 118,203,000 118,203,000 118,203,000 118,203,000 
        total assets
      4,433,827,000 4,183,599,000 3,963,731,000 3,761,862,000 3,705,837,000 3,708,714,000 3,769,728,000 3,631,706,000 3,410,720,000 3,486,824,000 3,370,655,000 3,394,896,000 3,383,407,000 3,501,252,000 3,319,906,000 3,488,426,000 3,609,154,000 3,809,425,000 3,762,182,000 4,000,922,000 3,719,717,000 3,652,346,000 3,436,512,000 3,249,189,000 2,820,388,000 2,787,014,000 2,698,791,000 2,671,514,000 2,616,643,000 2,706,606,000 2,882,487,000 2,931,720,000 2,995,193,000 3,109,545,000 3,089,327,000 3,030,225,000 2,842,280,000 2,762,493,000 2,365,687,000 2,407,858,000 2,548,974,000 2,548,674,000 2,661,884,000 2,692,807,000 2,512,182,000 2,538,520,000 2,695,007,000 2,630,663,000 2,433,449,000 2,629,824,000 2,611,648,000 2,506,170,000 2,389,538,000 2,429,345,000 2,463,291,000 2,434,670,000 2,238,148,000 1,962,677,000 1,998,295,000 1,449,325,000 1,261,666,000 1,235,337,000 1,226,493,000 1,102,380,000 1,154,391,000 1,235,247,000 1,560,599,000 1,580,907,000 1,610,528,000 1,555,288,000 1,596,302,000 1,707,674,000 1,656,699,000 1,721,055,000 1,976,362,000 2,035,610,000 1,896,446,000 1,859,732,000 1,760,556,000 1,764,914,000 1,815,615,000 1,922,562,000 1,968,659,000 1,967,832,000 1,863,310,000 1,785,362,000 1,798,552,000 1,836,298,000 1,841,961,000 
        liabilities
                                                                                               
        current liabilities:
                                                                                               
        accounts payable
      344,681,000 269,185,000 227,850,000 172,025,000 187,034,000 134,792,000 158,459,000 160,808,000 153,873,000 180,131,000 176,117,000 153,157,000 142,382,000 139,722,000 167,975,000 175,606,000 156,493,000 153,133,000 154,912,000 156,103,000 177,473,000 133,663,000 150,427,000 184,163,000 129,633,000 126,617,000 117,936,000 103,449,000 118,816,000 100,688,000 107,890,000 102,737,000 103,950,000 86,393,000 79,429,000 103,454,000 121,417,000 95,362,000 61,890,000 103,090,000 84,104,000 92,358,000 81,642,000 86,463,000 59,831,000 47,763,000 60,309,000 102,214,000 70,597,000 62,874,000 67,734,000 67,125,000 59,100,000 58,324,000 74,187,000 117,343,000 106,381,000 77,768,000 106,993,000 96,044,000 71,168,000 66,765,000 70,613,000 47,979,000 35,510,000 61,164,000 64,206,000 80,456,000 87,716,000 57,426,000 64,516,000 55,822,000 40,327,000 40,082,000 63,462,000 82,908,000 68,845,000 48,012,000 89,746,000 70,347,000 72,297,000 62,006,000 85,315,000 130,942,000 118,363,000 74,097,000 86,338,000 89,787,000 83,934,000 
        accrued employees’ compensation and withholdings
      156,194,000 254,973,000 203,850,000 176,482,000 143,019,000 204,991,000 159,794,000 161,187,000 121,144,000 191,750,000 155,246,000 163,653,000 119,433,000 212,266,000 168,102,000 190,506,000 139,287,000 253,667,000 196,928,000 205,717,000 138,238,000 220,321,000 175,286,000 175,589,000 119,226,000 163,883,000 127,912,000 121,940,000 89,089,000 148,566,000 116,546,000 115,264,000 86,292,000 141,694,000 113,634,000 122,246,000 79,018,000 109,944,000 89,723,000 89,167,000 71,838,000 113,994,000 98,252,000 94,544,000 65,396,000 100,994,000 91,053,000 86,765,000 58,687,000 95,619,000 78,616,000 73,756,000 54,555,000 86,264,000 78,929,000 80,118,000 59,321,000 75,495,000 75,018,000 80,592,000 59,737,000 55,356,000 52,053,000 54,708,000 59,742,000 73,521,000  70,991,000 61,603,000 71,691,000 65,188,000 65,594,000 56,481,000 87,975,000 74,990,000 78,907,000 63,467,000 81,670,000 78,416,000 54,724,000 59,382,000 106,298,000 93,589,000 87,575,000 68,519,000 91,244,000 91,317,000 78,028,000 65,764,000 
        deferred revenue and customer advances
      197,127,000 153,124,000 133,050,000 123,989,000 119,886,000 107,710,000 99,776,000 102,988,000 100,058,000 99,804,000 109,445,000 120,085,000 119,355,000 148,285,000 143,591,000 163,127,000 155,761,000 146,185,000 140,380,000 148,882,000 144,812,000 134,662,000 129,438,000 124,224,000 98,815,000 104,876,000 95,936,000 89,837,000 84,764,000 77,711,000 77,953,000 82,491,000 85,892,000 83,614,000 111,506,000 81,087,000 78,794,000 84,478,000 138,916,000 190,920,000 72,095,000 85,527,000 74,318,000 77,347,000 74,252,000 71,603,000 60,178,000 63,968,000 64,811,000 55,404,000 70,367,000 76,254,000 71,816,000 81,357,000 70,968,000 83,710,000 86,622,000 79,464,000 98,723,000 41,451,000 69,050,000 104,439,000 127,993,000 49,730,000 54,689,000 58,030,000 67,794,000 53,781,000 47,891,000 41,928,000 38,711,000 41,963,000 45,439,000 46,471,000 38,803,000 39,187,000 38,448,000 31,477,000 29,032,000 34,204,000 29,671,000 30,399,000 36,624,000 34,698,000 29,439,000 25,391,000 25,488,000 29,146,000 28,549,000 
        other accrued liabilities
      122,512,000 111,845,000 138,717,000 110,143,000 100,058,000 90,777,000 105,150,000 108,746,000 101,275,000 114,712,000 122,609,000 114,435,000 114,739,000 112,271,000 126,457,000 133,881,000 118,252,000 124,187,000 135,492,000 146,484,000 105,238,000 77,581,000 117,108,000 119,732,000 87,274,000 70,871,000 93,736,000 77,053,000 67,422,000 78,272,000 95,888,000 83,681,000 64,782,000 59,083,000 62,611,000 66,176,000 67,651,000 51,382,000 56,580,000 47,150,000 92,617,000 43,727,000 83,823,000 85,470,000 68,943,000 51,997,000 98,424,000 93,103,000 65,561,000 63,712,000 62,184,000 54,684,000 51,918,000 56,861,000 61,220,000 64,298,000 59,857,000 52,554,000 59,889,000 62,619,000 54,140,000 54,640,000 50,184,000 42,590,000 44,183,000 51,748,000 54,800,000 46,330,000 51,853,000 47,002,000 48,375,000 44,149,000 43,919,000 49,136,000 55,172,000 50,060,000 49,014,000 48,273,000 57,247,000 57,761,000 63,056,000 60,970,000 70,227,000 66,553,000 73,204,000 75,125,000 84,027,000 72,196,000 85,652,000 
        operating lease liabilities
      18,438,000 19,340,000 19,026,000 19,770,000 18,340,000 18,699,000 19,175,000 18,280,000 17,400,000 17,522,000 18,026,000 20,212,000 19,985,000 18,594,000 17,079,000 17,770,000 18,523,000 19,977,000 20,601,000 20,539,000 19,675,000 20,573,000 20,311,000 20,000,000 19,591,000 19,476,000 18,386,000  17,176,000                                                             
        short-term debt
       200,000,000 200,000,000                                                                                       
        income taxes payable
      173,259,000 106,740,000 72,496,000 72,856,000 80,729,000 67,610,000 52,542,000 74,365,000 55,922,000 48,653,000 35,687,000 65,437,000 77,089,000 65,010,000 64,141,000 106,863,000 103,386,000 88,789,000 73,077,000 93,876,000 90,349,000 80,728,000 79,270,000 89,216,000 58,760,000 44,200,000 33,508,000 44,927,000 41,898,000 36,185,000 24,603,000 32,226,000 34,828,000 59,055,000                                     5,262,000 10,099,000   28,339,000 18,082,000 9,199,000  7,891,000 3,242,000 6,456,000  19,012,000 13,179,000 7,313,000  6,628,000 7,100,000 8,162,000 
        total current liabilities
      1,012,211,000 1,115,207,000 994,989,000 675,265,000 649,066,000 624,579,000 594,896,000 626,374,000 554,359,000 659,951,000 640,659,000 669,785,000 628,092,000 746,263,000 701,941,000 797,385,000 712,199,000 805,120,000 753,609,000 985,362,000 686,842,000 700,871,000 671,840,000 729,713,000 513,961,000 539,029,000 493,711,000 467,000,000 441,968,000 476,287,000 458,412,000 452,310,000 391,325,000 454,336,000 431,375,000 439,207,000 393,057,000 372,696,000 369,084,000 455,349,000 344,522,000 372,857,000 395,741,000 402,079,000 293,133,000 292,406,000 329,804,000 361,232,000 273,053,000 475,632,000 487,723,000 465,070,000 417,445,000 297,828,000 349,253,000 425,871,000 375,822,000 293,021,000 352,986,000 294,343,000 256,228,000 283,357,000 303,080,000 197,076,000 383,254,000 366,963,000 249,702,000 253,924,000 249,063,000 223,234,000 222,052,000 220,336,000 188,801,000 259,716,000 521,766,000 554,144,000 513,973,000 515,495,000 265,283,000 223,283,000 233,972,000 276,558,000 312,150,000 340,472,000 304,680,000 280,815,000 301,082,000 284,410,000 280,165,000 
        retirement plans liabilities
      143,354,000 144,874,000 142,680,000 139,249,000 136,228,000 133,338,000 137,735,000 135,167,000 134,878,000 132,090,000 123,244,000 124,040,000 121,303,000 116,005,000 137,317,000 141,884,000 151,697,000 151,141,000 153,249,000 154,311,000 152,508,000 151,140,000 134,650,000 130,826,000 125,970,000 134,471,000 121,340,000 122,596,000 121,205,000 117,456,000 127,037,000 124,258,000 124,689,000 119,776,000 114,316,000  110,069,000 106,938,000 108,095,000 106,618,000 106,921,000 103,531,000 107,102,000 107,557,000 106,224,000 108,460,000 88,670,000 92,485,000 92,530,000 91,517,000 95,982,000 94,004,000 94,592,000 94,373,000      69,757,000 107,900,000 115,101,000 134,465,000 133,478,000 132,012,000 125,877,000 74,958,000 77,876,000 82,058,000 80,388,000 83,736,000 79,644,000 81,863,000 81,121,000                
        long-term deferred revenue and customer advances
      58,371,000 50,888,000 43,887,000 40,414,000 39,438,000 40,505,000 41,135,000 36,146,000 35,044,000 37,282,000 34,405,000 38,999,000 41,797,000 45,131,000 48,488,000 50,357,000 51,698,000 54,921,000 60,022,000 58,534,000 55,138,000 58,359,000 59,099,000 55,634,000 50,791,000 45,974,000 42,592,000 37,365,000 32,843,000 32,750,000 29,387,000 25,375,000 21,726,000 30,127,000 31,686,000 32,679,000 25,983,000 23,463,000 26,336,000 26,927,000 25,468,000 25,745,000 29,490,000 25,354,000 18,318,000 19,929,000 23,248,000 18,992,000 13,981,000 13,306,000 17,455,000 18,240,000 15,622,000 16,227,000 30,592,000 22,303,000 23,885,000 39,358,000 50,064,000                               
        deferred tax liabilities
      4,556,000 5,378,000 6,890,000 6,756,000 869,000 1,038,000 164,000 96,000 134,000 183,000 238,000 1,304,000 2,325,000 3,267,000 1,327,000 3,143,000 4,927,000 6,327,000 6,907,000 8,961,000 9,606,000 10,821,000 11,462,000 11,997,000 11,628,000 14,070,000 15,390,000 17,800,000 19,614,000 20,662,000 21,748,000 22,281,000 6,185,000 6,720,000 10,543,000 10,714,000 11,255,000 12,144,000 16,837,000 16,110,000 18,300,000 26,663,000 35,494,000 38,624,000 20,149,000 23,315,000 35,911,000 39,616,000 50,532,000 40,686,000 37,632,000 41,429,000 50,201,000 50,201,000 30,932,000 37,915,000 29,395,000 9,946,000 9,973,000 10,136,000 8,041,000 8,041,000 3,045,000 3,158,000 5,203,000  21,351,000 20,495,000                      
        long-term other accrued liabilities
      7,559,000 7,601,000 8,285,000 8,186,000 7,718,000 7,442,000 8,373,000 16,632,000 16,653,000 19,998,000 17,114,000 16,475,000 16,211,000 15,981,000 15,506,000 15,530,000 15,748,000 15,497,000 19,704,000 19,387,000 18,982,000 19,352,000 20,141,000 22,703,000 19,941,000 19,535,000 9,803,000 9,660,000 9,732,000 37,547,000 28,956,000 22,296,000 16,683,000 10,273,000 11,604,000 11,061,000 9,921,000 28,642,000 31,354,000 33,411,000 34,753,000 32,156,000 28,304,000 24,468,000 17,136,000 15,430,000 27,466,000 16,865,000 13,523,000 23,589,000 21,355,000 20,934,000 20,413,000 21,302,000 19,211,000 20,573,000 20,299,000 18,908,000 19,359,000 20,836,000 21,485,000 23,159,000 23,623,000 22,965,000 25,547,000 36,295,000 27,056,000 30,705,000 43,726,000 22,492,000 21,071,000 19,219,000 16,795,000 19,031,000 50,028,000 48,409,000 39,836,000 42,646,000 45,527,000 45,057,000 46,732,000 44,321,000 47,437,000 47,977,000 48,584,000 53,441,000 46,993,000 45,547,000 139,330,000 
        long-term operating lease liabilities
      63,960,000 63,899,000 49,725,000 54,691,000 50,423,000 57,922,000 60,287,000 61,883,000 65,554,000 65,092,000 69,364,000 65,079,000 65,082,000 64,176,000 51,872,000 57,600,000 55,934,000 56,178,000 48,492,000 49,066,000 39,048,000 42,073,000 42,137,000 43,582,000 46,328,000 45,849,000 46,813,000 46,460,000 38,062,000                                                             
        total liabilities
      1,290,011,000 1,387,847,000 1,246,456,000 924,561,000 908,338,000 889,420,000 867,186,000 900,894,000 852,891,000 960,927,000 929,355,000 960,013,000 933,945,000 1,049,958,000 1,065,781,000 1,189,830,000 1,134,622,000 1,245,469,000 1,221,808,000 1,486,280,000 1,393,931,000 1,441,541,000 1,442,968,000 1,504,638,000 1,269,715,000 1,306,856,000 1,216,156,000 1,192,102,000 1,146,415,000 1,184,252,000 1,214,727,000 1,191,780,000 1,090,210,000 1,155,899,000 979,430,000 981,577,000 922,427,000 933,834,000 583,543,000 662,279,000 553,073,000 582,888,000 616,279,000 618,585,000 454,960,000 459,540,000 505,099,000 529,190,000 443,619,000 644,730,000 660,147,000 639,677,000 598,273,000 650,990,000 678,048,000 749,240,000 689,455,000 592,790,000 664,357,000 540,569,000 536,097,000 570,758,000 603,183,000 493,764,000 554,072,000 529,135,000 373,067,000 383,000,000 374,847,000 326,114,000 326,859,000 319,873,000 287,459,000 359,868,000 610,996,000 641,067,000 591,661,000 617,066,000 731,077,000 701,220,000 719,855,000 788,998,000 834,824,000 878,508,000 846,745,000 835,792,000 863,260,000 887,109,000 869,732,000 
        commitments and contingencies
                                                                                               
        shareholders’ equity
                                                                                               
        common stock
      19,568,000 19,511,000 19,656,000 19,901,000 20,084,000 20,215,000 20,370,000 20,225,000 19,220,000 19,087,000 19,154,000 19,269,000 19,431,000 19,470,000 19,473,000 19,735,000 20,132,000 20,281,000 20,466,000 20,680,000 20,802,000 20,765,000 20,755,000 20,725,000 20,742,000 20,801,000 21,061,000 21,305,000 21,544,000 21,940,000 22,911,000 23,495,000 24,226,000 24,444,000 24,589,000 24,750,000 24,950,000 24,897,000 25,205,000 25,355,000 25,462,000 25,455,000 25,904,000 26,563,000 26,988,000 27,077,000 27,060,000 24,540,000 24,253,000 23,966,000 23,925,000 23,840,000 23,803,000 23,488,000 23,456,000 23,402,000 23,302,000 23,015,000 23,250,000 22,645,000 22,160,000 21,864,000 21,831,000 21,791,000 21,568,000 21,206,000 21,133,000 20,977,000 21,506,000 21,636,000 22,227,000 23,573,000 23,709,000 23,619,000 23,804,000 24,787,000 24,770,000 24,626,000 24,608,000 24,577,000 24,456,000 24,282,000 24,270,000 27,598,000 27,580,000 27,329,000 27,247,000 26,717,000 26,447,000 
        additional paid-in capital
      1,986,089,000 1,989,911,000 1,973,415,000 1,941,501,000 1,926,180,000 1,909,538,000 1,896,161,000 1,865,351,000 1,848,088,000 1,827,274,000 1,816,137,000 1,784,590,000 1,772,352,000 1,755,963,000 1,746,779,000 1,721,586,000 1,711,690,000 1,811,545,000 1,800,373,000 1,772,302,000 1,765,971,000 1,765,323,000 1,756,831,000 1,730,716,000 1,721,367,000 1,720,129,000 1,712,185,000 1,688,211,000 1,679,997,000 1,671,645,000 1,664,568,000 1,645,679,000 1,638,756,000 1,638,413,000 1,631,106,000 1,613,005,000 1,605,502,000 1,593,684,000 1,517,957,000 1,505,863,000 1,489,011,000 1,480,647,000 1,471,641,000 1,462,349,000 1,444,579,000 1,437,135,000 1,431,100,000 1,414,513,000 1,405,175,000 1,390,896,000 1,379,832,000 1,364,944,000 1,353,789,000 1,347,762,000 1,337,616,000 1,327,574,000 1,302,660,000 1,283,266,000 1,292,727,000 1,253,098,000 1,210,631,000 1,202,426,000 1,194,913,000 1,188,153,000 1,114,234,000 1,124,390,000 1,113,319,000 1,103,956,000 1,127,234,000 1,105,441,000 1,136,748,000 1,196,001,000 1,193,791,000 1,179,015,000 1,187,294,000 1,226,229,000 1,218,416,000 1,221,990,000 801,574,000 798,550,000 788,754,000 768,875,000 767,685,000 763,670,000 1,320,726,000 1,294,661,000 1,282,592,000 1,237,815,000 1,214,198,000 
        accumulated other comprehensive loss
      20,379,000 41,895,000 37,422,000 41,036,000 -41,992,000 -81,220,000 -4,028,000 -44,104,000 -39,739,000 -26,978,000 -47,928,000 -30,472,000 -36,466,000 -49,868,000 -84,779,000 -52,959,000 -19,479,000       -8,500,000 -27,113,000 -18,854,000 -24,221,000 -7,591,000 -15,706,000        -10,901,000 -20,214,000                    -122,925,000 -124,094,000 -117,631,000 -135,717,000 -138,105,000 -151,297,000 -152,516,000 -153,439,000 -148,108,000 -44,134,000 -46,930,000 -48,806,000 -46,028,000 -57,065,000 -59,828,000 -63,425,000 -66,309,000 -74,672,000 -80,292,000 -79,816,000 -78,348,000 -65,008,000 -63,117,000 -66,598,000 -61,313,000 -56,492,000 -59,167,000 -49,444,000 -51,846,000 -65,465,000 -59,775,000 -65,337,000 
        retained earnings
      1,117,780,000 744,435,000 686,782,000 834,863,000 893,227,000 970,761,000 990,039,000 889,340,000 730,260,000 706,514,000 653,937,000 661,496,000 694,145,000 725,729,000 572,652,000 610,234,000 762,189,000 736,566,000 712,437,000 684,952,000 529,103,000 387,414,000 207,710,000 1,610,000        74,270,000 216,120,000 272,013,000 438,201,000 404,978,000 300,302,000 230,292,000 235,597,000 212,068,000 476,393,000 467,828,000 547,993,000 588,472,000 579,571,000 610,079,000 726,889,000 656,711,000 555,512,000 566,232,000 543,889,000 474,430,000 407,874,000 401,285,000 417,828,000 329,187,000 217,798,000 186,531,000 142,055,000        97,214,000 119,904,000 135,747,000 148,125,000 167,533,000 228,055,000 215,165,000 224,862,000 228,940,000 223,819,000 141,415,000 96,502,000 268,305,000 303,684,000 349,148,000 401,720,000 398,372,000 357,223,000 276,730,000 236,483,000 247,975,000 301,489,000 353,978,000 
        total shareholders’ equity
      3,143,816,000 2,795,752,000 2,717,275,000 2,837,301,000 2,797,499,000 2,819,294,000 2,902,542,000 2,730,812,000 2,557,829,000 2,525,897,000 2,441,300,000 2,434,883,000 2,449,462,000 2,451,294,000 2,254,125,000 2,298,596,000 2,474,532,000 2,562,444,000 2,537,493,000 2,493,256,000 2,324,553,000 2,207,018,000 1,993,544,000 1,744,551,000 1,550,673,000 1,480,158,000 1,482,635,000 1,479,412,000 1,470,228,000 1,522,354,000 1,667,760,000 1,739,940,000 1,904,983,000 1,953,646,000 2,109,897,000 2,048,648,000 1,919,853,000 1,828,659,000 1,782,144,000 1,745,579,000 1,995,901,000 1,965,786,000 2,045,605,000 2,074,222,000 2,057,222,000 2,078,980,000 2,189,908,000 2,101,473,000 1,989,830,000 1,985,094,000 1,951,501,000 1,866,493,000 1,791,265,000 1,778,355,000 1,785,243,000 1,685,430,000 1,548,693,000 1,369,887,000 1,333,938,000 908,756,000 725,569,000 664,579,000 623,310,000 608,616,000 600,319,000 706,112,000 1,187,532,000 1,197,907,000 1,235,681,000 1,229,174,000 1,269,443,000 1,387,801,000 1,369,240,000 1,361,187,000 1,365,366,000 1,394,543,000 1,304,785,000 1,242,666,000 1,029,479,000 1,063,694,000 1,095,760,000 1,133,564,000 1,133,835,000 1,089,324,000 1,016,565,000 949,570,000 935,292,000 949,189,000 972,229,000 
        total liabilities and shareholders’ equity
      4,433,827,000 4,183,599,000 3,963,731,000 3,761,862,000 3,705,837,000 3,708,714,000 3,769,728,000 3,631,706,000 3,410,720,000  3,370,655,000 3,394,896,000 3,383,407,000          3,436,512,000 3,249,189,000 2,820,388,000 2,787,014,000 2,698,791,000 2,671,514,000 2,616,643,000 2,706,606,000 2,882,487,000 2,931,720,000 2,995,193,000 3,109,545,000 3,089,327,000 3,030,225,000 2,842,280,000 2,762,493,000 2,365,687,000 2,407,858,000 2,548,974,000 2,548,674,000 2,661,884,000 2,692,807,000 2,512,182,000 2,538,520,000 2,695,007,000 2,630,663,000 2,433,449,000 2,629,824,000 2,611,648,000 2,506,170,000 2,389,538,000 2,429,345,000 2,463,291,000 2,434,670,000 2,238,148,000 1,962,677,000 1,998,295,000 1,449,325,000 1,261,666,000 1,235,337,000 1,226,493,000 1,102,380,000 1,154,391,000 1,235,247,000 1,560,599,000 1,580,907,000 1,610,528,000 1,555,288,000 1,596,302,000 1,707,674,000 1,656,699,000 1,721,055,000 1,976,362,000 2,035,610,000 1,896,446,000 1,859,732,000 1,760,556,000 1,764,914,000 1,815,615,000 1,922,562,000 1,968,659,000 1,967,832,000 1,863,310,000 1,785,362,000 1,798,552,000 1,836,298,000 1,841,961,000 
        long-term income taxes payable
           24,596,000    44,331,000    59,135,000    67,041,000    74,930,000  74,930,000  82,642,000 83,782,000   83,891,000   160,181,000 148,075,000                                                        
        long-term incomes taxes payable
          24,596,000  24,596,000 24,596,000 44,331,000  44,331,000 44,331,000 59,135,000  59,135,000 59,135,000 67,041,000  67,041,000 67,041,000 74,930,000  74,930,000  82,820,000   88,884,000 83,891,000  147,360,000 147,360,000                                                          
        current assets held for sale
              22,426,000 23,250,000                                                                                
        long-term assets held for sale
              11,458,000 11,531,000                                                                                
        current liabilities held for sale
              4,687,000 7,379,000                                                                                
        long-term liabilities held for sale
              1,938,000 2,000,000                                                                                
        current debt
                23,529,000 32,806,000 35,109,000 50,115,000 14,596,000 9,632,000 20,497,000 19,182,000 32,219,000 213,761,000 11,057,000 33,343,000                            186,663,000 183,573,000 179,565,000 176,835,000 2,328,000 3,863,000 2,522,000 2,431,000 2,605,000 2,475,000 2,291,000 2,133,000 2,157,000 2,237,000 2,069,000 124,514,000 122,500,000                        
        total liabilities, convertible common shares and shareholders’ equity
               3,486,824,000    3,501,252,000 3,319,906,000 3,488,426,000 3,609,154,000 3,809,425,000 3,762,182,000 4,000,922,000 3,719,717,000 3,652,346,000                                                                    
        debt
                    50,195,000 64,796,000 75,378,000 89,244,000 112,784,000 143,618,000 356,877,000 376,768,000 406,178,000 402,305,000 398,466,000 394,687,000 390,942,000 387,243,000 383,590,000                                                             
        mezzanine equity:
                                                                                               
        convertible common shares
                       1,512,000 2,881,000 21,386,000 1,233,000 3,787,000                                                                    
        long-term contingent consideration
                           7,227,000 22,531,000 32,948,000 19,810,000 30,599,000 11,783,000 15,094,000 15,510,000 35,678,000 25,410,000 25,003,000  20,605,000 17,311,000 16,983,000 16,205,000 37,282,000 31,837,000 23,864,000 23,109,000 21,936,000 20,148,000 20,503,000                                              
        accumulated other comprehensive income
                       -5,948,000 4,217,000 15,322,000 8,677,000 33,516,000 8,248,000       -13,040,000 3,524,000 -3,504,000 25,881,000 18,776,000 16,001,000 5,915,000   3,385,000 2,293,000 5,035,000 -8,144,000 67,000 -3,162,000 6,084,000 4,689,000 4,859,000 5,709,000 4,890,000 4,000,000 3,855,000 3,279,000 5,799,000 5,820,000 6,343,000 5,267,000 4,933,000                                 
        prepayments and other current assets
                        386,967,000 368,315,000 347,678,000 259,338,000 232,103,000 238,176,000 227,740,000 188,598,000 182,013,000 184,832,000 194,044,000 170,826,000 139,785,000 111,820,000 112,191,000 112,151,000                  113,253,000 97,909,000 95,487,000 81,987,000 80,895,000 83,994,000 64,087,000 61,946,000 47,994,000 43,893,000 63,606,000 60,348,000 51,781,000 61,401,000 77,872,000 44,088,000 39,805,000 73,906,000 37,169,000 31,345,000 24,314,000 21,309,000 21,610,000 23,574,000 32,258,000 31,802,000 25,033,000 32,675,000 34,116,000 40,412,000 34,761,000 33,914,000 34,603,000 33,225,000 35,393,000 30,822,000 35,004,000 32,532,000 
        contingent consideration
                             16,789,000 662,000 9,106,000 6,297,000 11,753,000 22,803,000 34,865,000 35,532,000 35,911,000 15,581,000 24,497,000 21,818,000 22,432,000 21,711,000 1,050,000 1,050,000 1,050,000 500,000 15,500,000 14,447,000 15,092,000          388,000 16,513,000 54,662,000 61,210,000                                 
        accumulated deficit
                              -164,323,000 -241,918,000 -226,390,000 -222,513,000 -215,607,000                               -249,356,000 -371,505,000 -421,606,000 -442,137,000 -448,812,000 -382,044,000                         
        current operating lease liabilities
                                 18,041,000                                                              
        long-term debt
                                   379,981,000 376,417,000 372,897,000 369,421,000 365,987,000 362,595,000 359,245,000 355,937,000 352,669,000                171,059,000 167,556,000 165,283,000 161,803,000 156,839,000 154,821,000 145,497,000 142,443,000 141,100,000 138,970,000 137,087,000 8,056,000                       449,888,000 450,237,000 
        (accumulated deficit) retained earnings
                                   -158,191,000 -23,243,000                                   -291,376,000                        
        accrued income taxes
                                        42,377,000 43,812,000 24,466,000 30,480,000 20,925,000 23,972,000 23,368,000 21,751,000 43,259,000 43,163,000 24,711,000 20,049,000 19,840,000 15,182,000 1,749,000 11,360,000 25,249,000 13,686,000 3,221,000 12,306,000 43,573,000 23,218,000  5,135,000 9,888,000 11,346,000       238,000 2,366,000  5,187,000   2,635,000 36,052,000    3,234,000    11,738,000    7,376,000    
        retirement plan assets
                                         9,231,000                   7,711,000 7,182,000 9,244,000 14,684,000 14,456,000                               
        retirement plan liabilities
                                         111,688,000                   80,504,000 77,295,000 78,251,000 74,718,000 77,154,000                               
        intangible assets
                                          94,843,000 100,401,000 114,146,000 122,069,000 223,274,000 239,831,000 260,294,000 279,126,000 176,792,000 190,600,000 197,477,000 215,748,000 234,020,000 252,291,000 265,705,000 283,728,000 300,831,000 318,867,000 337,688,000 356,117,000 374,546,000 101,604,000 108,357,000 137,522,000 144,835,000 152,192,000 160,592,000 170,545,000 178,759,000 186,998,000 91,559,000 96,593,000                      
        inventories, net:
                                                                                               
        parts
                                            59,498,000 57,745,000 59,425,000 73,117,000 85,713,000 67,285,000 72,134,000 70,821,000 64,588,000 70,444,000 77,072,000 84,232,000 70,620,000 71,552,000 85,502,000 89,598,000   89,125,000 91,934,000 90,964,000 51,699,000 17,150,000 43,691,000 50,351,000 64,961,000 79,392,000 89,140,000 43,162,000 50,288,000 39,800,000 27,627,000 38,344,000 8,733,000 6,338,000 9,154,000 13,558,000 10,444,000 11,210,000 37,028,000 79,949,000 125,842,000 140,277,000 140,094,000 140,280,000 134,218,000 128,258,000 109,538,000 106,115,000 120,932,000 135,750,000 
        assemblies in process
                                            22,517,000 32,536,000 38,490,000 32,825,000 15,885,000 17,376,000 15,927,000 10,347,000 11,147,000 15,191,000 15,131,000 15,539,000 25,923,000 25,124,000 29,208,000 32,303,000 25,926,000 27,078,000 28,576,000 23,403,000 21,039,000 22,159,000 55,452,000 37,161,000 53,470,000 50,185,000 77,931,000 56,780,000 46,780,000 42,486,000 41,623,000 31,272,000 53,508,000 79,310,000 75,465,000 83,916,000 82,718,000 101,059,000 104,448,000 105,678,000 142,241,000 131,777,000 116,301,000 122,902,000 151,784,000 149,692,000 119,551,000 105,396,000 114,693,000 111,633,000 114,800,000 
        finished goods
                                            33,051,000 38,997,000 62,772,000 47,646,000 26,834,000 37,156,000 32,990,000 23,961,000 32,642,000 41,239,000 45,231,000 38,168,000 26,489,000 31,528,000 34,348,000 17,509,000 13,998,000 17,826,000 20,529,000 18,002,000 29,515,000 9,962,000 11,593,000 9,984,000 8,149,000 11,543,000 8,026,000 22,531,000 30,705,000 25,667,000 22,269,000 21,414,000                  1,747,000 1,468,000 
        inventories:
                                                                                               
        net property, plant and equipment
                                                   329,038,000 335,805,000 308,521,000 278,727,000 275,236,000 275,421,000 264,876,000 264,043,000 265,782,000 261,118,000 248,000,000 238,617,000 232,576,000 233,432,000   246,362,000    298,449,000    352,707,000    366,349,000    421,286,000    547,075,000    544,369,000    
        dividend payable
                                                      11,648,000                                         
        long-term marketable securities
                                                        202,087,000 302,846,000   178,281,000 133,750,000 121,512,000 40,712,000 281,978,000 95,487,000 72,188,000                             
        raw materials
                                                            94,833,000 92,994,000                                  
        less: accumulated depreciation
                                                            586,593,000 579,608,000 570,632,000 568,383,000 562,346,000 541,802,000 538,144,000 536,045,000 524,989,000 514,239,000 502,498,000 484,325,000 463,711,000 477,704,000 476,322,000 473,064,000 470,137,000 487,581,000 524,110,000 516,698,000 511,886,000 587,935,000 621,479,000 637,584,000 -813,115,000 -798,505,000 -821,868,000 -802,422,000 -806,244,000 -774,913,000 -756,939,000 -760,885,000   -727,008,000 
        accounts receivable
                                                               143,523,000 207,823,000 248,018,000 178,740,000  139,693,000 73,914,000 67,259,000  193,870,000 212,458,000 201,906,000  231,561,000 211,461,000 169,410,000  231,779,000 276,962,000 259,201,000  269,283,000 235,275,000 218,635,000  255,519,000 295,453,000 255,246,000    221,833,000 
        current assets from discontinued operations
                                                                                               
        property, plant and equipment, at cost
                                                               800,959,000 795,778,000                               
        long-term assets from discontinued operations
                                                                                               
        current liabilities from discontinued operations
                                                                                               
        long-term liabilities of discontinued operations
                                                                             674,000                  
        property, plant, and equipment, at cost
                                                                 777,494,000 778,401,000  775,140,000 784,608,000 785,346,000  758,879,000 830,809,000 847,840,000  821,849,000 845,176,000 886,209,000  882,451,000 978,379,000 1,035,211,000  1,327,064,000 1,326,619,000 1,374,362,000  1,353,070,000 1,313,382,000 1,299,111,000    1,378,114,000 
        net property, plant, and equipment
                                                                 235,692,000 240,257,000  250,151,000 270,369,000 282,848,000  295,168,000 353,105,000 371,518,000  351,712,000 357,595,000 362,099,000  370,565,000 390,444,000 413,732,000  513,949,000 528,114,000 552,494,000  546,826,000 538,469,000 542,172,000  587,625,000 624,263,000 651,106,000 
        inventories: - sum
                                                                   90,836,000 111,970,000 126,689,000 165,349,000    103,692,000  91,852,000  81,803,000    115,658,000      292,064,000 283,910,000   220,808,000  252,018,000 
        deferred tax asset
                                                                   18,944,000      30,779,000                      
        property, plant and equipment:
                                                                                               
        land
                                                                   16,561,000    16,561,000    24,579,000    26,092,000    36,996,000    48,112,000    50,503,000    
        buildings and improvements
                                                                   133,689,000    134,327,000    198,287,000    202,522,000    267,157,000    320,918,000    328,468,000    
        machinery and equipment
                                                                   631,506,000    630,446,000    601,031,000    648,957,000    735,526,000    948,840,000    894,924,000    
        construction in progress
                                                                   651,000    1,440,000    1,874,000    5,476,000    19,191,000    31,627,000    31,359,000    
        total
                                                                   782,407,000    782,774,000    825,771,000    883,047,000    1,058,870,000    1,349,497,000    1,305,254,000    
        warrant receivable
                                                                      42,956,000                         
        convertible note hedge payable
                                                                      64,616,000                         
        inventories - sum
                                                                       168,451,000    80,313,000    93,070,000    142,706,000    262,996,000    214,934,000    
        net inventories
                                                                        120,647,000 118,441,000    88,043,000   96,276,000 111,503,000   222,190,000 257,619,000          
        long-term deferred tax assets
                                                                                               
        accrued employee compensation and withholdings
                                                                        62,664,000                       
        intangible and other assets
                                                                          128,219,000 37,127,000 36,622,000 34,610,000 37,337,000 35,819,000    41,405,000    46,870,000    56,895,000 73,642,000 72,229,000 58,559,000 
        current assets of discontinued operations
                                                                             5,487,000                  
        long-term assets of discontinued operations
                                                                             818,000                  
        current liabilities of discontinued operations
                                                                             2,709,000                  
        notes payable—banks
                                                                                   2,547,000 2,657,000 2,705,000 2,800,000 4,826,000 7,081,000 7,217,000 7,521,000 7,272,000 6,986,000 6,745,000  
        current portion of long-term debt
                                                                                261,000,000 285,000,000 285,000,000 300,282,000 294,000 300,000 310,000 321,000 302,000 308,000 321,000 310,000 298,000 1,408,000 1,386,000 
        other long-term debt
                                                                                   1,819,000 7,012,000 7,123,000 7,310,000 7,432,000 7,364,000 7,486,000 7,668,000 7,658,000 7,655,000   
        deferred compensation
                                                                                   -22,104,000            
        pension liability
                                                                                39,202,000 38,514,000 37,852,000 57,106,000 41,755,000 54,257,000 60,341,000 69,187,000 76,373,000 82,573,000 85,813,000 93,878,000 107,530,000 107,264,000  
        convertible senior notes
                                                                                    371,500,000 371,500,000 371,500,000 391,500,000 391,500,000 400,000,000 400,000,000 400,000,000 400,000,000   
        treasury stock
                                                                                           -557,057,000   -557,057,000 
        treasury shares, at cost, 26,655 shares at december 31, 2003
                                                                                               
        treasury shares, at cost, 26,690 and 26,655 shares at april 4, 2004 and december 31, 2003, respectively
                                                                                          -559,027,000     
        property, plant, and equipment, at cost:
                                                                                            1,360,141,000 1,366,837,000  
        less: accumulated depreciation.
                                                                                            -772,516,000 -742,574,000  
        treasury shares, at cost, 26,655 shares at september 28, 2003 and december 31, 2002
                                                                                            -557,057,000   
        treasury shares, at cost, 26,655 shares at june 29, 2003 and december 31, 2002
                                                                                             -557,057,000  
        notes payable – banks
                                                                                              6,718,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-29 2025-12-31 2025-09-28 2025-06-29 2025-03-30 2024-12-31 2024-09-29 2024-06-30 2024-03-31 2023-12-31 2023-10-01 2023-07-02 2023-04-02 2022-12-31 2022-10-02 2022-07-03 2022-04-03 2021-12-31 2021-10-03 2021-07-04 2021-04-04 2020-12-31 2020-09-27 2020-06-28 2020-03-29 2019-12-31 2019-09-29 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-07-01 2018-04-01 2017-12-31 2017-10-01 2017-07-02 2017-04-02 2016-12-31 2016-10-02 2016-07-03 2016-04-03 2015-12-31 2015-10-04 2015-07-05 2015-04-05 2014-12-31 2014-09-28 2014-06-29 2014-03-30 2013-12-31 2013-09-29 2013-06-30 2013-03-31 2012-07-01 2012-04-01 2011-10-02 2010-07-04 2010-04-04 2009-12-31 2009-10-04 2009-07-05 2009-04-05 2008-12-31 2008-09-28 2008-06-29 2008-03-30 2007-12-31 2007-09-30 2007-07-01 2007-04-01 2006-12-31 2006-10-01 2006-07-02 2006-04-02 2005-12-31 2005-10-02 2005-07-03 2005-04-03 2004-12-31 2004-10-03 2004-07-04 2004-04-04 2003-12-31 2003-09-28 2003-06-29 2003-03-30 
                                                                                              
          cash flows from operating activities:
                                                                                              
          net income
        398,908,000 257,220,000 119,558,000 78,373,000 98,896,000 146,253,000 145,649,000 186,273,000 64,197,000 117,054,000 128,117,000 120,050,000 83,531,000 172,301,000 183,485,000 197,787,000 161,928,000 224,040,000 256,718,000 328,319,000 205,512,000 196,332,000 222,717,000 188,907,000 176,191,000 125,073,000 135,860,000 97,397,000 109,138,000 143,788,000 119,981,000 101,036,000 86,974,000 -105,924,000 103,419,000 174,976,000 85,221,000 66,346,000 63,793,000 -223,546,000 49,986,000 -641,000 71,452,000 102,879,000 32,787,000 -103,811,000 82,949,000 101,205,000 929,000 22,343,000 69,459,000 66,556,000 6,589,000 111,387,000 33,564,000 54,745,000 122,149,000 50,100,000   -66,768,000 -90,668,000 -388,591,000 -22,689,000 11,079,000 2,367,000 16,704,000 40,989,000 27,654,000 -7,636,000 10,874,000 60,565,000 82,405,000 44,913,000 224,062,000 -35,378,000 -45,464,000 -52,572,000 3,348,000 41,149,000 80,493,000 40,247,000     
          adjustments to reconcile net income from operations to net cash from operating activities:
                                                                                              
          depreciation
        30,240,000 31,961,000 26,649,000 27,312,000 25,523,000 26,497,000 25,553,000 25,573,000 23,354,000 23,260,000 23,627,000 22,551,000 22,680,000 22,861,000 23,442,000 21,957,000 22,503,000 23,207,000 22,018,000 21,938,000 23,910,000 22,008,000 19,806,000 19,816,000 18,489,000 19,326,000 17,626,000 17,231,000 16,651,000 17,485,000 16,774,000 16,820,000 16,336,000 16,879,000 16,769,000 16,331,000 16,143,000 16,345,000 16,269,000 15,976,000 16,192,000 15,650,000 16,301,000 16,885,000 19,345,000 20,558,000 19,047,000 18,526,000 15,259,000 15,444,000 14,321,000 13,437,000 14,115,000 13,290,000 12,288,000 12,781,000 13,515,000 13,425,000 14,377,000 15,466,000 14,856,000 15,395,000 14,675,000 17,503,000 20,008,000 19,069,000 14,033,000 14,386,000 14,839,000 16,126,000 16,508,000 17,099,000 16,848,000 18,238,000 -1,453,000 29,684,000 30,272,000 26,767,000 26,476,000 30,416,000 32,150,000 29,537,000 35,647,000 35,573,000 38,036,000 38,033,000 
          stock-based compensation
        21,902,000 16,438,000 15,530,000 16,827,000 15,204,000 14,855,000 14,574,000 14,935,000 15,758,000 12,446,000 12,787,000 13,564,000 18,885,000 10,808,000 12,298,000 12,228,000 12,894,000 10,994,000 11,418,000 10,999,000 12,232,000 11,878,000 11,661,000 10,907,000 10,460,000 9,075,000 10,713,000 8,635,000 9,474,000 8,250,000 7,702,000 8,081,000 9,544,000 8,477,000 8,308,000 8,367,000 8,945,000 7,738,000 7,555,000 7,532,000 7,925,000 7,371,000 7,675,000 7,442,000 7,963,000 8,434,000 8,343,000 8,297,000 15,233,000 9,385,000 9,150,000 9,054,000 9,023,000 10,630,000 10,766,000 7,832,000 7,351,000 8,202,000 6,371,000 6,159,000 6,032,000 6,077,000 6,341,000 5,088,000 5,666,000 5,155,000 3,829,000 5,577,000 6,550,000 7,518,000 6,185,000 6,134,000 6,233,000 6,099,000             
          equity in net earnings of affiliate
        4,611,000 3,205,000 5,198,000 5,927,000 5,584,000 6,136,000                                                                                 
          losses on investments
        3,317,000 -698,000 -3,644,000 -4,450,000 3,372,000 -83,000 -2,951,000 2,624,000 10,466,000 -11,756,000 1,586,000                                                                            
          provision for excess and obsolete inventory
        4,682,000 6,607,000 6,828,000 7,402,000 4,945,000 3,406,000 6,078,000 3,261,000 6,177,000 5,289,000 11,728,000                                                4,300,000 6,473,000 8,611,000 8,597,000          3,024,000               
          amortization
        2,415,000 3,813,000 3,867,000 4,077,000 4,779,000 4,631,000 4,736,000 4,631,000 4,766,000 4,685,000 4,503,000 4,654,000 4,926,000 4,900,000 4,917,000 4,862,000 5,233,000 6,786,000 8,283,000 9,521,000 9,822,000 10,047,000 10,343,000 12,843,000 13,391,000 12,972,000 11,873,000 12,034,000 12,942,000 12,900,000 12,732,000 10,973,000 9,204,000 9,640,000 9,901,000 11,342,000 11,070,000 8,952,000 9,095,000 16,710,000 20,470,000 20,433,000 20,764,000 16,256,000 15,139,000 17,032,000 19,132,000 19,065,000 23,925,000 23,875,000 25,570,000 22,041,000 21,884,000 21,929,000 21,815,000 12,256,000 11,216,000 11,975,000 12,738,000 11,906,000 11,245,000 10,098,000 8,111,000 5,674,000 5,359,000 4,361,000 2,209,000 1,998,000 1,657,000 2,247,000 981,000 1,316,000 1,244,000 1,306,000 1,645,000 1,359,000 1,359,000 1,535,000 1,358,000 1,449,000 1,823,000 1,099,000 1,098,000 1,206,000 1,402,000 1,493,000 
          deferred taxes
        -7,777,000 -22,967,000 -14,102,000 -7,187,000 -7,811,000 -20,099,000 -9,431,000 -7,161,000 -9,669,000 -13,616,000 -10,455,000 -5,937,000 -7,634,000 -10,320,000 -4,776,000 -34,885,000 11,288,000 -6,573,000 -9,932,000 257,000 -1,057,000 -11,141,000 2,616,000 -5,338,000 -1,825,000 -6,479,000 -3,492,000 -691,000 1,206,000 3,898,000 7,130,000 8,616,000 8,696,000 37,784,000 2,884,000 -86,000 -3,477,000 -20,368,000 -21,110,000 -15,962,000 -5,496,000 6,849,000 -3,602,000 -8,540,000 -1,831,000 4,336,000 -3,050,000 -18,396,000 12,699,000 14,927,000 -3,981,000 -9,047,000 -6,183,000 8,238,000 7,699,000     -406,000                           
          other
        2,286,000 8,661,000 176,000 -315,000 3,483,000 2,751,000 -6,281,000 453,000 787,000 -942,000 79,000 -200,000 108,000 1,613,000 218,000 345,000 177,000 28,000 44,000 -1,000 200,000 807,000 227,000 20,000 503,000 156,000 181,000 210,000 219,000 567,000 -652,000 -225,000 1,393,000 278,000 -724,000 1,151,000 2,000 -599,000 -425,000 92,000 484,000 -2,557,000 1,369,000 2,571,000 -1,417,000 1,395,000 945,000 1,306,000 -141,000 -490,000 -994,000 946,000 131,000 16,000 -454,000 -45,000 795,000 624,000 -2,825,000 812,000 4,196,000 -3,241,000                         
          changes in operating assets and liabilities, net of businesses acquired:
                                                                                              
          accounts receivable
        -322,017,000 -193,814,000 -161,283,000 36,443,000 13,053,000 12,607,000 -11,055,000 -46,156,000 -8,055,000 40,786,000 32,884,000 -39,897,000 37,204,000 46,380,000 150,632,000 -146,592,000 208,000 45,521,000 269,399,000 -285,186,000 -87,512,000 92,564,000 109,025,000 -204,261,000 -126,779,000 -3,651,000 12,689,000 -37,772,000 -41,706,000 59,869,000 101,596,000 -38,656,000 -140,747,000 -4,961,000 138,566,000 -90,397,000 -123,792,000 -27,335,000 183,890,000 -95,678,000 -42,552,000 33,850,000 51,376,000 -117,744,000 -24,749,000 171,730,000 -20,545,000 -84,243,000 -58,882,000 52,307,000 18,822,000 -61,594,000 -13,191,000 -124,577,000 -92,217,000 64,300,000 -69,278,000 -53,504,000 14,457,000 -65,779,000 -6,655,000 42,412,000 95,146,000 18,562,000 -10,552,000 15,040,000 42,179,000 -20,101,000 -45,270,000 -10,525,000 72,744,000 45,161,000 -17,809,000 -26,773,000 -17,239,000 -34,040,000 -16,601,000 4,849,000 32,028,000 40,028,000 -40,301,000 -25,714,000 -4,415,000 -4,790,000 768,000 -49,911,000 
          inventories
        20,827,000 6,194,000 -10,911,000 7,342,000 -31,049,000 -2,420,000 -5,975,000 24,034,000 -6,932,000 -1,068,000 20,240,000 9,852,000 -23,697,000 -11,992,000 -22,135,000 -37,202,000 -9,480,000 -15,448,000 2,035,000 55,778,000 -35,870,000 -25,436,000 20,726,000 -19,546,000 15,818,000 -13,265,000 -11,696,000 470,000 -2,917,000 4,619,000 -12,834,000 -266,000 -21,017,000 21,190,000 31,919,000 54,003,000 -62,152,000 -14,338,000 18,379,000 30,924,000 -702,000 -17,817,000 9,876,000 17,540,000 5,960,000 12,905,000 19,798,000 15,834,000 2,635,000 -13,024,000 7,821,000 30,413,000 -4,040,000 -2,190,000 23,636,000 13,972,000 9,557,000 15,522,000 17,466,000 16,452,000 33,599,000 -4,140,000 1,568,000 -3,419,000 -1,301,000 78,000 17,918,000 2,397,000 4,262,000 20,602,000 11,707,000 18,242,000 15,085,000 33,433,000 35,963,000 1,513,000 19,517,000 13,484,000 39,211,000 -1,471,000 -27,756,000 -26,024,000 2,092,000 13,505,000 16,271,000 24,430,000 
          prepayments and other assets
        4,049,000 16,008,000 -53,478,000 17,229,000 13,650,000 58,016,000 39,248,000 11,101,000 11,089,000 20,881,000 -34,398,000 -14,204,000 -15,380,000 -46,382,000 420,000 -20,446,000 -74,305,000 -37,282,000 -21,148,000 -31,285,000 -86,131,000 -23,667,000 8,728,000 -9,859,000 -39,620,000 -7,666,000 949,000 1,581,000 -18,648,000 -29,683,000 -30,360,000 2,320,000 -679,000 -5,108,000 2,937,000 3,321,000 1,104,000 -5,921,000 696,000 -12,509,000 -1,148,000 -12,495,000 1,475,000 10,908,000 3,146,000 -6,247,000 20,784,000 27,628,000 -628,000 -23,260,000 -9,035,000 -16,207,000 -1,070,000   -3,205,000                               
          accounts payable and other liabilities
        -15,025,000 87,401,000 104,312,000 27,085,000 -9,950,000  -10,657,000 52,539,000 -105,548,000  28,513,000    -28,071,000    -21,726,000 97,361,000 -10,571,000  -32,021,000 148,901,000 -35,323,000 28,472,000 35,231,000 38,899,000 -53,323,000                                                          
          deferred revenue and customer advances
        51,964,000 26,974,000 12,596,000 2,856,000 10,200,000 8,552,000 885,000 4,183,000 -1,444,000 -7,693,000 -14,579,000 -2,233,000 -32,705,000 -337,000 -20,059,000 7,416,000 6,747,000 1,174,000 -6,490,000 7,237,000 7,952,000 3,385,000 7,934,000 29,568,000 -913,000 11,534,000 11,953,000 9,371,000 6,455,000 3,556,000 -695,000 874,000 9,644,000 -29,551,000 29,223,000 8,645,000 -3,333,000 -57,014,000 -52,692,000 119,908,000 -13,836,000 10,260,000 1,066,000 4,647,000 1,038,000 7,767,000 466,000 4,168,000 9,632,000 -19,115,000 -6,672,000 7,056,000 -10,146,000 -4,494,000 -1,704,000 -29,965,000                               
          retirement plans contributions
        -1,534,000 -1,497,000 -1,410,000 -4,294,000 -1,282,000  -1,395,000 -1,353,000 -1,421,000  -1,216,000    -1,279,000    -1,384,000 -814,000 -1,925,000  -1,383,000 -1,239,000 -1,262,000  -1,361,000 -1,204,000 -1,210,000  -1,071,000 -1,153,000 -1,020,000    -947,000  -3,573,000 -1,048,000 -1,250,000  -999,000 -980,000 -1,019,000  -893,000 -963,000 -1,425,000  -1,058,000 -1,448,000 -1,063,000       -1,746,000    -1,573,000    -484,000                   
          income taxes
        66,276,000 34,777,000 -36,000 -32,665,000 13,040,000 15,296,000 -21,520,000 -1,132,000 3,754,000 15,762,000 -29,069,000 -26,102,000 12,488,000 1,536,000 -42,185,000 18,426,000 -7,611,000 11,802,000 -14,778,000 -7,569,000 4,941,000 1,109,000 -13,782,000 22,564,000 15,278,000 17,640,000 -16,251,000 7,831,000 -22,804,000 -47,277,000 -6,844,000 -14,202,000 -12,106,000 157,994,000 1,445,000 75,000 14,288,000 14,207,000 4,221,000 58,000 -52,000                                           1,301,000 5,164,000 -2,468,000 
          net cash from operating activities
        265,124,000 281,639,000 49,050,000 182,089,000 161,637,000 282,557,000 166,271,000 216,069,000 7,279,000 248,780,000 174,347,000 142,768,000 19,336,000 183,402,000 271,604,000 115,455,000 7,462,000 331,283,000 522,660,000 206,284,000 38,139,000 260,424,000 342,512,000 222,897,000 43,102,000 216,328,000 199,148,000 145,258,000 18,016,000 186,376,000 240,584,000 131,851,000 -81,930,000 147,473,000 309,830,000 230,313,000 -61,121,000 37,063,000 201,306,000 180,682,000 26,748,000 40,235,000 179,149,000 155,925,000 37,532,000 174,957,000 133,751,000 209,175,000 -25,821,000 43,846,000 154,452,000 105,471,000 -36,494,000 102,092,000 11,169,000 92,975,000 108,137,000 26,687,000 65,157,000 102,917,000 18,448,000 -65,205,000 43,439,000 38,748,000 46,525,000 34,421,000 87,924,000 29,140,000 41,480,000 -30,357,000 108,183,000 138,689,000   57,790,000 37,552,000 -25,508,000 -55,512,000 57,698,000 78,162,000 77,982,000 40,986,000 35,160,000 25,370,000 17,994,000 -44,358,000 
          capital expenditures
        -64,733,000 -62,888,000 -46,692,000 -50,408,000 -64,021,000 -57,385,000 -51,841,000 -44,846,000 -44,023,000 -44,336,000 -34,604,000 -39,258,000 -41,444,000 -34,577,000 -38,929,000 -45,744,000 -43,999,000 -29,310,000 -29,205,000 -34,707,000 -39,250,000 -38,105,000 -62,858,000 -47,314,000 -36,700,000 -38,594,000 -37,092,000 -33,245,000 -25,711,000 -26,110,000 -25,606,000 -27,866,000 -34,797,000 -32,128,000 -27,280,000 -23,901,000 -22,066,000 -19,020,000 -19,659,000 -26,259,000 -20,334,000 -23,151,000 -20,617,000 -24,961,000 -21,149,000 -22,630,000 -54,963,000 -60,192,000 -31,197,000 -23,806,000 -32,127,000 -28,251,000 -22,547,000 -22,156,000 -18,119,000 -17,587,000   -10,435,000 -8,732,000 -16,046,000 -8,564,000 -8,513,000 -12,157,000 -1,596,000 
          free cash flows
        200,391,000 218,751,000 2,358,000 131,681,000 97,616,000 225,172,000 114,430,000 171,223,000 -36,744,000 204,444,000 139,743,000 103,510,000 -22,108,000 148,825,000 232,675,000 69,711,000 -36,537,000 301,973,000 493,455,000 171,577,000 -1,111,000 222,319,000 279,654,000 175,583,000 6,402,000 177,734,000 162,056,000 112,013,000 -7,695,000 160,266,000 214,978,000 103,985,000 -116,727,000 115,345,000 282,550,000 206,412,000 -83,187,000 18,043,000 181,647,000 154,423,000 6,414,000 17,084,000 158,532,000 130,964,000 16,383,000 152,327,000 78,788,000 148,983,000 -57,018,000 20,040,000 122,325,000 77,220,000 -59,041,000 102,092,000 11,169,000 70,819,000 90,018,000 9,100,000 65,157,000 102,917,000 18,448,000 -65,205,000 43,439,000 38,748,000 46,525,000 34,421,000 87,924,000 29,140,000 41,480,000 -30,357,000 108,183,000 138,689,000   57,790,000 37,552,000 -25,508,000 -55,512,000 57,698,000 67,727,000 69,250,000 24,940,000 26,596,000 16,857,000 5,837,000 -45,954,000 
          cash flows from investing activities:
                                                                                              
          purchases of property, plant and equipment
        -64,733,000 -62,888,000 -46,692,000 -50,408,000 -64,021,000 -57,385,000 -51,841,000 -44,846,000 -44,023,000 -44,336,000 -34,604,000 -39,258,000 -41,444,000 -34,577,000 -38,929,000 -45,744,000 -43,999,000 -29,310,000 -29,205,000 -34,707,000 -39,250,000 -38,105,000 -62,858,000 -47,314,000 -36,700,000 -38,594,000 -37,092,000 -33,245,000 -25,711,000 -26,110,000 -25,606,000 -27,866,000 -34,797,000 -32,128,000 -27,280,000 -23,901,000 -22,066,000 -19,020,000 -19,659,000 -26,259,000 -20,334,000 -23,151,000 -20,617,000 -24,961,000 -21,149,000 -22,630,000 -54,963,000 -60,192,000 -31,197,000 -23,806,000 -32,127,000 -28,251,000 -22,547,000   -22,156,000 -18,119,000 -17,587,000                             
          acquisition of businesses, net of cash acquired
          -127,378,000 -17,002,000                  149,000    -6,970,000 1,158,000                                                        
          purchase of investment in a business
         -20,151,000    -2,407,000                                                                                
          purchases of marketable securities
        -40,797,000 -5,534,000 -10,315,000 -6,397,000 -10,753,000 -10,699,000 -7,340,000 -11,715,000 -16,042,000 -24,120,000 -38,768,000 -29,742,000 -69,276,000 -20,234,000 -19,294,000 -81,904,000 -165,977,000 -152,311,000 -111,384,000 -186,482,000 -211,604,000 -411,768,000 -188,880,000 -112,429,000 -187,119,000 -57,162,000 -121,358,000 -108,997,000 -375,184,000 -109,223,000 -162,450,000 -156,747,000 -490,324,000              -320,750,000 -266,046,000 -257,260,000  -199,118,000 -333,556,000 -124,514,000                                  
          proceeds from maturities of marketable securities
        10,910,000 7,330,000 9,018,000 5,222,000 27,381,000 5,190,000 6,305,000 12,420,000 14,438,000 13,595,000 49,450,000 14,529,000 7,468,000 40,849,000 42,440,000 42,970,000 96,682,000 88,871,000 111,064,000 265,985,000 194,228,000 170,271,000 126,423,000 84,527,000 98,457,000 218,455,000 160,279,000 91,992,000 141,201,000 336,339,000 464,238,000 257,164,000 212,698,000              118,129,000 97,114,000 280,322,000  133,355,000 148,994,000 119,552,000                                  
          proceeds from sales of marketable securities
        27,328,000 167,000 685,000 2,854,000 5,633,000 435,000 2,311,000 555,000 20,734,000 24,438,000 1,386,000 27,648,000 7,929,000 8,858,000 115,558,000 113,061,000 30,581,000 57,029,000 93,325,000 54,819,000 61,293,000 2,395,000 5,950,000 11,656,000 15,005,000 45,312,000 17,820,000 37,014,000 5,440,000 2,958,000 14,111,000 28,382,000 800,671,000              83,242,000 51,455,000 101,363,000  282,342,000 28,561,000 21,694,000                                  
          net cash from investing activities
        -67,292,000 -60,925,000 -67,455,000 -178,464,000 -61,773,000 -67,459,000 -49,796,000 -481,067,000 -24,020,000 -30,423,000 -27,536,000 -26,823,000 -94,863,000 -1,694,000 99,775,000 28,383,000 -82,713,000 -35,721,000 63,800,000 87,615,000 4,667,000 -277,207,000 -119,365,000 -63,014,000 -110,208,000  22,288,000 -28,236,000 -260,951,000 203,964,000 300,497,000 -44,343,000 462,892,000 -74,519,000 -428,357,000 113,681,000 126,394,000 -372,330,000 -252,101,000 -86,747,000 70,716,000 12,751,000 -77,101,000 12,671,000 -62,043,000 -78,481,000 -174,342,000 -177,669,000 97,619,000 -276,212,000 184,452,000 -184,252,000 -5,815,000 -61,091,000 -54,364,000 575,502,000 -81,701,000 -105,767,000 -56,297,000 -29,486,000 -12,181,000 4,034,000 -134,503,000 -39,481,000 -26,197,000 -248,917,000 115,211,000 174,044,000 -34,279,000 -138,323,000  405,318,000 -119,192,000 -82,741,000  -9,322,000 24,716,000 38,309,000  -30,762,000 -78,506,000 -72,701,000  -78,478,000 -23,558,000 -6,160,000 
          cash flows from financing activities:
                                                                                              
          proceeds from borrowings on revolving credit facility
        50,000,000 50,000,000                                                                                   
          repayments of borrowings on revolving credit facility
        -250,000,000                                                                                     
          dividend payments
        -20,362,000 -18,739,000 -18,990,000 -19,178,000 -19,406,000 -19,487,000 -19,566,000 -19,000,000 -18,370,000 -16,797,000 -16,897,000 -17,019,000 -17,165,000 -17,133,000 -17,136,000 -17,547,000 -17,895,000 -16,266,000 -16,440,000 -16,604,000 -16,667,000 -16,612,000 -16,604,000 -16,580,000 -16,686,000 -15,036,000 -15,250,000 -15,392,000 -15,627,000 -16,002,000 -16,638,000 -17,094,000 -17,588,000 -13,717,000 -13,805,000 -13,904,000 -14,021,000 -12,071,000 -12,123,000 -12,172,000 -12,253,000 -12,279,000 -12,577,000 -12,808,000 -13,049,000                                          
          repurchase of common stock
        -5,518,000 -183,437,000 -243,785,000 -117,398,000 -157,475,000 -143,521,000 -24,747,000 -8,189,000 -22,117,000 -50,749,000 -118,647,000 -134,537,000 -93,308,000 -2,082,000 -217,201,000 -331,334,000 -201,465,000 -193,820,000 -209,596,000 -151,396,000 -45,188,000 -9,426,000 -79,039,000 -131,218,000 -121,560,000 -90,754,000 -156,468,000 -261,215,000 -201,468,000 -226,519,000 -134,276,000 -48,483,000 -57,493,000 -56,598,000 -37,730,000 -61,239,000 -28,309,000 -28,782,000 -28,001,000 -73,106,000 -98,527,000 -81,666,000 -46,650,000                  -1,000 -58,214,000 -32,977,000 -70,103,000 -175,952,000 -24,041,000 -3,569,000 -28,251,000                
          payments related to net settlement of employee stock compensation awards
        -39,437,000 -448,000 -300,000 -228,000 -14,726,000 -267,000 -399,000 -319,000 -13,115,000 -202,000 -278,000 -438,000 -19,870,000 -183,000 -207,000 -1,732,000 -31,048,000 -258,000 -251,000 -1,119,000 -30,675,000 -279,000 -216,000 -449,000 -22,070,000 -191,000 -104,000 -128,000 -14,318,000 -182,000 -90,000 -122,000 -19,629,000 -297,000 -146,000 -149,000 -12,289,000                                                  
          issuance of common stock under stock purchase and stock option plans
        15,101,000 1,784,000 15,284,000 14,792,000 65,000 15,429,000 4,902,000 16,934,000 175,000 17,485,000 602,000 15,997,000 12,197,000 61,000 16,475,000 96,000 9,000 15,437,000 17,144,000 1,999,000 13,771,000 5,000 12,752,000 32,000 14,191,000 821,000 14,268,000 14,000 10,278,000 27,000 10,654,000 31,000 9,247,000 131,000 15,084,000                                                  
          net cash from financing activities
        -250,216,000 -200,840,000 -47,791,000 -136,804,000 -176,815,000 -163,210,000 -29,283,000 -22,606,000 -36,668,000 -91,102,000 -127,614,000 -153,695,000 -129,501,000 -34,152,000 -232,060,000 -372,150,000 -254,627,000 -251,241,000 -461,447,000 -169,235,000 -126,661,000 -14,892,000 -3,049,000 -26,450,000 -113,895,000 -146,413,000 -122,723,000 -105,453,000 -199,760,000 -277,385,000 -207,918,000 -243,708,000 -174,410,000 -62,466,000 -62,197,000 -70,520,000 -50,006,000 347,695,000 -34,844,000 -32,198,000 -42,811,000 -82,498,000 -108,516,000 -86,856,000 -50,800,000 -13,924,000 -2,330,000 -9,507,000 -180,810,000   1,163,000 8,608,000 14,659,000 2,855,000 -28,712,000 35,794,000 4,956,000 1,496,000 -85,000 47,163,000 17,523,000 121,196,000 7,212,000 -57,314,000 -24,795,000 -69,842,000 -167,321,000 -19,575,000 6,244,000 -287,985,000 -125,496,000   -74,908,000 3,055,000           
          effects of exchange rate changes on cash and cash equivalents
        577,000 1,177,000 -356,000 -3,201,000 -771,000 -8,570,000 940,000 2,105,000 3,241,000 -6,645,000 4,556,000 1,750,000 -537,000 -3,529,000 -596,000 5,732,000 2,282,000 -1,576,000 -1,372,000 883,000 616,000 -349,000 -1,496,000 571,000 -169,000 119,000 -190,000 -329,000 -222,000 472,000 -1,289,000 1,478,000 678,000 1,052,000 129,000 1,595,000                                                  
          decrease in cash and cash equivalents
        -51,807,000  -66,552,000 -136,380,000 -77,722,000  88,132,000 -285,499,000 -50,168,000  23,753,000 -36,000,000 -205,565,000    -327,596,000    -82,972,000   131,937,000 -180,430,000                    -75,311,000   21,999,000 -109,012,000    -33,701,000     -74,725,000    -43,648,000  6,479,000 -36,986,000 -239,291,000   -12,374,000 -162,436,000   13,741,000 -17,918,000   9,048,000 -19,135,000   1,365,000 -5,474,000  -50,902,000 18,023,000 -31,640,000 
          cash and cash equivalents at beginning of period
        293,751,000  553,354,000  757,571,000  854,773,000  1,122,199,000  914,121,000  773,924,000  926,752,000  429,843,000  307,884,000  264,705,000  294,256,000  341,638,000  338,920,000 573,736,000 416,737,000  322,705,000  562,371,000  568,025,000  340,699,000  209,147,000  228,444,000  251,521,000 
          cash and cash equivalents at end of period
        241,944,000  -66,552,000 -136,380,000 475,632,000  88,132,000 -285,499,000 707,403,000  23,753,000 -36,000,000 649,208,000  138,723,000 -222,580,000 794,603,000  125,013,000 123,292,000 831,149,000  219,749,000 131,937,000 593,494,000  98,832,000 11,379,000 483,728,000  333,635,000 -157,489,000 637,873,000  -179,672,000 273,603,000 324,746,000  -83,158,000 61,737,000 319,358,000  -6,468,000 81,740,000 218,945,000  -42,921,000 21,999,000 232,626,000  345,267,000 -77,618,000 305,219,000 55,660,000 533,396,000 639,765,000 61,984,000 342,012,000  72,660,000 55,024,000 279,057,000  6,479,000 -36,986,000 323,080,000  35,863,000 -12,374,000 405,589,000  418,511,000 13,741,000 322,781,000  31,285,000 9,048,000 190,012,000  39,684,000 1,365,000 222,970,000  -50,902,000 18,023,000 219,881,000 
          non-cash investing activities:
                                                                                              
          capital expenditures incurred but not yet paid:
        5,420,000 -4,350,000 3,099,000 -2,413,000 7,135,000 214,000 555,000 38,000 3,086,000 343,000 651,000 -2,082,000 3,823,000 -523,000 494,000 -645,000 2,500,000 -313,000 -2,217,000 663,000 3,840,000                                                                  
          loss on sale of business
                                                                                              
          retirement plan actuarial losses
              -2,262,000                                                                                
          acquisition of businesses, net of cash and cash equivalents acquired
                                                                                              
          issuance of convertible loan
                                                                                             
          proceeds from the sale of a business, net of cash and cash equivalents sold
             3,176,000                                                                                
          proceeds from insurance
              873,000                                                                              
          payments of convertible debt principal
                 -23,529,000 -9,277,000 -2,303,000 -15,155,000 -14,754,000 -9,713,000 -21,598,000 -20,694,000 -40,993,000 -235,169,000 -15,553,000 -51,275,000                                                                  
          decrease increase in cash and cash equivalents
                                                                                              
          cash and cash equivalents at beginning of year
                                                                                              
          cash and cash equivalents at end of year
                                                                                              
          supplementary disclosure of cash flow information:
                                                                                              
          cash paid for:
                                                                                              
          interest
                                                                                          8,294,000 1,799,000 8,478,000 2,183,000 
          gain on sale of business
             367,000                                                                                
          retirement plan losses
                                                                                              
          investments in businesses
            -3,011,000                                                                                  
          proceeds from life insurance
                  460,000             2,639,000 273,000              1,098,000  4,391,000          1,076,000 11,783,000                        
          retirement plans actuarial losses
                                 7,728,000                                                             
          loss on sale of asset
                                                                                              
          accounts payable and other accrued expenses
                    -83,208,000    -124,382,000             -2,431,000 24,279,000 38,551,000 -46,706,000 38,276,000 -29,206,000 42,057,000 -7,553,000 46,235,000 -32,749,000 -7,566,000 -7,626,000 -4,450,000 -729,000 73,542,000 -20,150,000 -74,539,000 -23,687,000 98,283,000 -45,487,000 14,607,000 15,645,000 32,109,000 -47,258,000 36,775,000 -9,635,000                                
          retirement plan contributions
                    -1,234,000    -1,329,000                                      -1,061,000 -1,152,000 -18,018,000 -6,659,000    -1,604,000    -1,104,000    -1,158,000                 
          proceeds from sale of asset
                                                                                              
          payments of borrowings on revolving credit facility
                                                                                              
          increase in cash and cash equivalents
                     144,027,000 138,723,000   42,745,000 125,013,000   -31,059,000     98,832,000 11,379,000 -443,024,000 112,733,000 333,635,000 -157,489,000 208,030,000 11,166,000 -179,672,000 273,603,000 16,862,000 9,947,000 -83,158,000 61,737,000 54,653,000     82,552,000    -231,230,000 345,267,000   55,660,000 -40,340,000 639,765,000   9,996,000 72,660,000       133,293,000    -187,008,000    110,354,000            
          changes in operating assets and liabilities
                                                                                              
          gains on sale of asset
                                                                                              
          loss on convertible debt conversion
                         3,431,000 20,153,000 1,175,000 4,069,000                                                                  
          contingent consideration fair value adjustment
                                 -2,797,000 -7,759,000 -11,671,000 2,970,000     5,973,000 -286,000                                                    
          purchase of investment and acquisition of business
                                                                                            
          benefit from excess and obsolete inventory
                    5,610,000 12,523,000 12,234,000 5,105,000 1,590,000 3,700,000 8,150,000 1,340,000 2,285,000 4,418,000 3,479,000 5,580,000 4,057,000 6,396,000 3,049,000 3,402,000 2,397,000 1,720,000 3,347,000 2,653,000 3,522,000 1,690,000 1,859,000 2,569,000 2,726,000 2,345,000 3,033,000 7,742,000 4,373,000 2,393,000 3,058,000 14,441,000 1,440,000 688,000 6,434,000 5,032,000 10,039,000 6,976,000 3,841,000 1,975,000 3,800,000 9,353,000 1,574,000 4,413,000 301,000 1,364,000                             
          (gains) losses on investments
                    -2,238,000        -2,491,000        -2,828,000                                                          
          retirement plans actuarial (gains) losses
                                                         -8,981,000                                    
          losses (gains) on investments
                     -1,451,000 2,463,000 6,972,000 2,001,000        4,657,000                                                              
          payments of contingent consideration
                             -8,852,000 -27,615,000 -13,571,000 -1,050,000   -11,697,000         -75,000 -313,000 -5,824,000                                
          contingent consideration fair value adjustments
                                                                                              
          loss on convertible debt conversions
                                                                                              
          retirement plans actuarial gains
                                              662,000 -669,000 -1,193,000                                              
          purchase of investment
                                                                                              
          gains on investments
                         -1,660,000 -100,000    -3,046,000                                                                
          investment impairment
                                                                                              
          contingent consideration adjustment
                          -7,227,000  -27,206,000 29,259,000 -10,020,000      -768,000 -3,500,000 -4,968,000    634,000 5,445,000 7,973,000 1,305,000 1,173,000 5,089,000 -1,000,000           -6,548,000 -1,858,000                                
          retirement plan actuarial (gains) losses
                                                                                              
          changes in operating assets and liabilities, net of business acquired:
                                                                                              
          proceeds from government subsidy for property, plant and equipment
                                                                                             
          purchase of investment and acquisition of businesses, net of cash acquired
                                 -57,772,000                                                             
          supplementary disclosure of cash flows information:
                                                                                              
          supplemental cash flow disclosure
                                                                                              
          capital expenditures incurred but not yet paid
                              -3,162,000                                                                
          property insurance recovery
                                             -312,000                                                
          net cash (used for) provided by investing activities
                                                                                              
          (decrease) increase in cash and cash equivalents
                                                                                              
          adjustments to reconcile net income to net cash from operating activities:
                                                                                              
          gains on marketable securities
                                                                                              
          (gains) losses on marketable securities
                                                                                              
          purchase of investments and acquisition of businesses, net of cash acquired
                                                                                              
          goodwill impairment
                                                                                            
          acquired intangible assets impairment
                                                                                              
          tax benefit related to employee stock compensation awards
                                             -2,799,000    -1,502,000 -2,321,000                                            
          proceeds from issuance of convertible notes, net of issuance costs
                                                                                              
          purchase of convertible note hedges
                                                                                              
          proceeds from issuance of warrants
                                                                                              
          proceeds from property insurance
                                                                                           
          retirement plan actuarial gains
                                                                                              
          acquisition of business, net of cash acquired
                                        -25,356,000          -409,000                    -4,861,000 -280,463,000                     
          gain from the sale of an equity investment
                                                 -624,000 -4,782,000                                          
          non-cash charge for the sale of inventories revalued at the date of acquisition
                                                                  5,700,000 3,925,000 1,238,000  4,346,000                     
          purchases of available-for-sale marketable securities
                                         -355,394,000 -701,704,000 -181,502,000 -153,317,000 -780,430,000 -438,526,000 -215,533,000 -221,778,000 -466,396,000 -367,356,000 -254,615,000 -335,635,000         -76,676,000 -80,095,000 -94,720,000 -128,421,000 -95,399,000 -58,899,000    -94,894,000   -55,220,000 -89,813,000 -117,853,000 -125,499,000 -24,352,000 -14,973,000 -241,306,000 -116,291,000 -266,739,000 -18,919,000 -101,766,000 -15,487,000 -151,844,000 -79,286,000 -70,589,000 -65,318,000 -51,816,000 -131,974,000 -47,845,000 -58,774,000 
          proceeds from maturities of available-for-sale marketable securities
                                         228,426,000 165,648,000 219,423,000 88,184,000 41,070,000 74,138,000 54,566,000 73,458,000 29,901,000 98,947,000 91,194,000 140,222,000                                          
          proceeds from sales of available-for-sale marketable securities
                                         84,577,000 129,915,000 99,661,000 213,593,000 386,050,000 131,946,000 95,428,000 239,370,000 472,397,000 212,334,000 482,761,000 148,639,000            40,198,000 7,069,000                             
          proceeds from the sale of an equity investment
                                                 624,000 4,782,000                                          
          payment of revolving credit facility costs
                                                                                            
          gain on insurance recovery
                                                                                              
          changes in operating assets and liabilities:
                                                                                              
          impairment of fixed assets
                                                                                            
          issuance of common stock under stock option and stock purchase plans
                                                                                              
          payments of long-term debt
                                                     3,000 -190,975,000 -1,471,000   -1,246,000 -1,296,000 -1,123,000                             
          intangible assets impairment
                                                                                             
          non-cash charge for the sale of inventories revalued at date of acquisition
                                                                                              
          issuance of common stock under employee stock purchase and stock option plans
                                               8,756,000 9,140,000  267,000 8,979,000 8,899,000    10,165,000                                      
          payment of contingent consideration
                                                                                              
          proceeds from (purchases of) life insurance
                                                                                              
          accrued income taxes
                                                  2,416,000 18,599,000 4,662,000 -1,308,000 4,713,000 15,104,000 -9,609,000 -12,102,000 10,786,000 12,049,000 -9,085,000   -8,470,000          -7,573,000    -33,417,000 7,713,000 10,257,000 8,883,000 5,965,000 -6,334,000 4,649,000 -3,214,000 -5,282,000 -7,274,000 5,833,000 5,866,000 -63,000    -1,425,000 
          non cash charge for the sale of inventories revalued at the date of acquisition
                                                             1,218,000 4,871,000                                
          adjustments to reconcile income from operations to net cash from operating activities:
                                                                                              
          tax benefit related to stock options and restricted stock units
                                                     1,191,000 -55,000   -1,789,000 777,000                                    
          cash paid during the year for:
                                                                                              
          impairment loss on property, plant and equipment
                                                                                             
          issuance of common stock under employee stock purchase and stock options plans
                                                      10,387,000                                        
          payments of dividend
                                                      -12,772,000                                        
          less: income from discontinued operations
                                                                                             
          less: gain on disposal of discontinued operations
                                                                                             
          income from continuing operations
                                                             111,387,000 33,564,000 54,745,000       -388,591,000 -23,457,000 11,079,000 2,367,000 17,153,000 35,198,000   10,874,000 64,451,000 82,405,000 44,913,000             
          adjustments to reconcile income from continuing operations to net cash from operating activities:
                                                                                              
          changes in operating assets and liabilities, net of businesses sold and acquired:
                                                                                              
          net cash from continuing operations
                                                             102,092,000 11,169,000    65,157,000    43,439,000 37,980,000 46,525,000 34,421,000 88,373,000 29,245,000   108,183,000 142,575,000 131,327,000 71,887,000             
          net cash from discontinued operations
                                                                         -449,000 -105,000                  
          (purchases of ) proceeds from life insurance
                                                                                              
          issuance of common stock under employee stock option and stock purchase plans
                                                          7,140,000 717,000 8,921,000 7,059,000 9,925,000 164,000 35,794,000 6,079,000  984,000 6,819,000 7,453,000  7,212,000 900,000 8,182,000  8,631,000 4,466,000 9,813,000  7,816,000 1,606,000 12,584,000  3,055,000 9,917,000 20,053,000  780,000 2,043,000 26,316,000  45,307,000 23,886,000 19,169,000 
          net cash from (used) for financing activities
                                                                                              
          other assets
                                                             3,142,000 1,885,000  -4,703,000 20,064,000 3,959,000 -7,077,000 10,013,000 -7,621,000 -11,411,000 -12,301,000 3,259,000 -9,454,000 -7,320,000 -14,203,000 -1,696,000 -1,739,000 2,255,000 12,390,000 -483,000 -7,606,000 7,698,000 3,794,000 -3,034,000 -5,099,000 -1,854,000 1,198,000 -1,777,000 5,425,000 3,867,000 12,889,000 -14,108,000 -3,532,000 
          proceeds from sales of trading marketable securities
                                                                23,550,000 150,000                             
          income taxes payments
                                                                                              
          changes in operating assets and liabilities, net of businesses sold:
                                                                                              
          proceed from sales of available-for-sale marketable securities
                                                                                              
          investments in property, plant and equipment
                                                              -27,074,000    -15,349,000 -9,155,000 -11,341,000 -6,087,000 -11,674,000 -18,826,000 -27,718,000 -28,984,000 -22,300,000 -19,177,000 -22,676,000 -21,935,000 -27,747,000 -30,068,000 -27,181,000 -25,421,000 -82,728,000 49,558,000 -37,778,000 -42,526,000         
          proceeds from sales and maturities of available-for-sale marketable securities
                                                              52,805,000 692,378,000      9,045,000                         
          accounts payable and accrued expenses
                                                               -38,204,000                               
          net cash from operating activities from continuing operations
                                                               92,975,000                               
          net cash from operating activities from discontinued operations
                                                                                             
          net cash from investing activities from continuing operations
                                                               575,502,000                               
          net cash from investing activities from discontinued operations
                                                                                             
          loss on sale and impairment of marketable securities
                                                                87,000 323,000 257,000 -603,000 -31,000 2,563,000                         
          non-cash charge for sale of inventories revalued at the date of acquisition
                                                                                              
          revolving credit facility issue costs
                                                                                            
          accounts payable, deferred revenue and accrued expenses
                                                                23,819,000 -34,749,000  108,885,000 5,157,000 -44,311,000  -15,204,000 10,123,000 287,000  12,916,000 30,036,000 -40,052,000  -15,363,000 32,574,000 -11,788,000  25,373,000 -15,130,000 -41,703,000  -40,751,000 26,396,000 11,121,000     
          proceeds from long-term debt
                                                                     10,070,000                         
          repayment of revolving credit facility principal
                                                                                             
          effect of exchange rate changes on cash and cash equivalents
                                                                -246,000 -601,000 -360,000 -686,000                           
          loss on sale of land and buildings
                                                                                              
          in-process research and development
                                                                                              
          changes in operating assets and liabilities, net of businesses and product lines sold and acquired:
                                                                                              
          accounts payable, deferred revenue, retirement plans liabilities and other accrued expenses
                                                                                              
          proceeds from sale of land and buildings
                                                                                              
          proceeds from sale of equity investments and product lines
                                                                                              
          acquisition of technology
                                                                          -17,600,000                 
          net proceeds from long-term debt
                                                                                            
          repayment of revolving credit facility
                                                                                              
          payments of long-term debt and notes payable
                                                                                              
          net proceeds from revolving credit facility
                                                                                              
          income taxes (refunds) payments
                                                                                              
          net loss
                                                                                          -11,492,000   -76,498,000 
          income from discontinued operations
                                                                           -105,000                   
          loss from continuing operations
                                                                                              
          adjustments to reconcile loss from continuing operations to net cash from operating activities:
                                                                                              
          in-process research and development charge
                                                                       1,100,000  16,700,000                 
          loss on sale of land and building
                                                                                              
          income taxes payable
                                                                       -2,128,000    -4,837,000                -472,000   
          proceeds from sale of an equity investment
                                                                                              
          proceeds from sale and maturities of available-for-sale marketable securities
                                                                   11,139,000    42,023,000 29,247,000 60,530,000  264,192,000 105,533,000 26,711,000  407,351,000 112,906,000 58,742,000  32,306,000 150,133,000 95,908,000         
          proceeds from sale of land and building
                                                                       26,356,000       5,397,000 42,988,000    3,720,000           
          repayment of long-term debt principal
                                                                                              
          gain on sale of land and building
                                                                       22,565,000       -779,000 -16,583,000   -10,931,000 47,000           
          accounts payable, deferred revenue and accruals
                                                                                          -9,805,000 9,336,000 18,296,000 6,198,000 
          gain on sale from discontinued operations
                                                                                              
          gain on sale of product lines
                                                                            -20,000 -157,000 -229,000             
          gain on life insurance
                                                                                              
          gain on sale of an equity investment
                                                                                              
          impairment of marketable securities
                                                                                              
          other non-cash items
                                                                       614,000 308,000 -599,000 -957,000 -422,000 692,000 516,000 520,000 426,000 2,834,000 -23,000 -1,946,000 -563,000 1,431,000 -764,000 1,240,000 -738,000 -345,000 722,000 -1,427,000 264,000 2,174,000 2,682,000 
          changes in operating assets and liabilities, net of businesses and product lines acquired and sold:
                                                                                              
          proceeds from sale of product lines and business
                                                                               20,000              
          provision for inventory
                                                                        1,906,000 1,348,000    461,000    8,302,000      2,469,000       
          provision for doubtful accounts
                                                                                          249,000   842,000 
          adjustments to reconcile income from continuing operations to net cash provided (used for) by operating activities:
                                                                                              
          impairment of long-lived assets
                                                                              50,000 -1,421,000 9,157,000 595,000   -100,000 377,000   6,494,000 7,494,000 
          gain on sale of land and buildings
                                                                                              
          provision for inventory obsolescence
                                                                                              
          deferred income tax credit
                                                                                              
          tax credit related to pension funding
                                                                                              
          proceeds from sale of product lines
                                                                                229,000    414,000 -208,000 602,000      2,114,000 
          income taxes paid
                                                                                              
          changes in operating assets and liabilities, net of product lines and businesses sold:
                                                                                              
          payments of long term debt and notes payable
                                                                               -24,000,000 -19,648,000  -77,000 -21,985,000  -8,496,000       
          fire loss on spare parts
                                                                                              
          benefit from doubtful accounts
                                                                                              
          benefit from inventory
                                                                                    2,165,000 2,678,000    4,259,000     
          net cash from (used by) investing activities
                                                                                              
          changes in operating assets and liabilities, net of product lines sold:
                                                                                              
          adjustments to reconcile net income from continuing operations to net cash from operating activities:
                                                                                              
          net cash provided (used for) by operating activities
                                                                                 71,887,000             
          net cash used by financing activities
                                                                                 -7,064,000             
          loss on sale of product lines
                                                                                      552,000 -1,049,000   2,212,000 5,836,000 
          deferred stock compensation
                                                                                              
          deferred income tax (credit) provision
                                                                                              
          proceeds from asset disposals
                                                                                          18,751,000 9,806,000   
          maturities of held-to-maturity marketable securities
                                                                                          29,905,000 
          gain on sale of product lines and business
                                                                                             
          benefit from excess or obsolete inventory
                                                                                              
          increase in test equipment manufactured by teradyne
                                                                                              
          net cash flows from financing activities
                                                                                     -1,932,000  -7,716,000 1,889,000 26,241,000  2,206,000 23,587,000 18,878,000 
          impairment of goodwill
                                                                                              
          provision for inventory reserves
                                                                                              
          proceeds from sale of business
                                                                                              
          purchases of held-to-maturity marketable securities
                                                                                              
          cash paid for acquisition of assets
                                                                                              
          net cash used by investing activities
                                                                                              
          additions to property, plant and equipment
                                                                                       -10,435,000 -8,732,000 -16,046,000 -8,564,000 -8,513,000 -12,157,000 -1,596,000 
          proceeds from asset disposal
                                                                                             5,964,000 
          increase in equipment manufactured by teradyne
                                                                                        -30,264,000 -23,424,000  -11,697,000 -6,417,000 -16,901,000 
          maturities of available-for-sale marketable securities
                                                                                        30,214,000 32,087,000  63,900,000 42,861,000 33,128,000 
          payments of long term debt
                                                                                         -75,000    -291,000 
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                              
          deferred income tax provision
                                                                                              
          increase in equipment manufactured by the company
                                                                                              
          proceeds from sale of business, net of expenses
                                                                                              
          cash acquired in acquisition
                                                                                              
          proceeds from convertible notes
                                                                                              
          proceeds from mortgage notes payable
                                                                                              
          businesses acquired:
                                                                                              
          fair value of assets acquired
                                                                                              
          liabilities assumed
                                                                                              
          common stock issued
                                                                                              
          deferred income tax benefit
                                                                                              
          cash paid for acquisition of pci assets
                                                                                              
          proceeds from the sale of product lines
                                                                                             
          cash paid during the period for:
                                                                                              
          (payments of) proceeds from long term debt
                                                                                              
          cash paid (received) during the period for: