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Coherent, Inc
(NYSE:COHR) 

COHR stock logo

Coherent, Inc. provides lasers, laser-based technologies, and laser-based system solutions for a range of scientific, commercial, and industrial research applications. It operates in two segments, OEM Laser Sources and Industrial Lasers & Systems. The company designs, manufactures, markets, and serv...

Founded: 1966
Sector: Technology
Industry: Scientific & Technical Instruments

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At a glance:
  • Exposure to AI Data Center and High-Speed Optical Interconnect Demand: Coherent is positioned to benefit from accelerating buildouts in AI data centers, where demand for high-speed optical components and related photonics solutions is increasing.
  • Cyclical End-Market Mix Drives Near-Term Volatility: Results can swing with changes in telecom/datacom, industrial, and consumer electronics demand; normalization or slowdowns in any major end market can pressure revenue and margins.
  • Integration and Execution Remain Key Post-M&A: Realizing synergies, streamlining operations, and stabilizing manufacturing yields and supply chain performance are central to margin expansion and more consistent profitability.
  • Margin Expansion Depends on Product Mix and Cost Actions: Shifts toward higher-value photonics content, pricing discipline, and ongoing cost optimization initiatives are primary levers for improving gross and operating margins.
  • Balance Sheet and Cash Flow Discipline in Focus: Investors are likely to watch deleveraging progress, working capital management, and free cash flow generation as Coherent funds growth while maintaining financial flexibility.
Bull Thesis:
  • Realization of Merger Synergies: The integration of II-VI and the former Coherent is expected to unlock significant cost synergies, expand market reach, and create cross-selling opportunities across a broader product portfolio, driving enhanced profitability and market leadership for Coherent Corp.
  • Diversified High-Growth End Markets: Coherent Corp.'s broad exposure to critical sectors like semiconductors, industrial manufacturing, communications, and life sciences provides resilience and multiple avenues for growth, driven by long-term technological megatrends and increasing demand for advanced photonics solutions.
  • Strong Technological Leadership and Innovation: With a robust R&D pipeline, extensive patent portfolio, and deep expertise in materials science and photonics, Coherent Corp. maintains a leading edge in laser and optical technology, positioning it to capitalize on emerging applications and maintain competitive advantage.
  • Strategic Enabler of Advanced Technologies: Coherent Corp.'s products are fundamental components in advanced manufacturing processes, AI infrastructure, 5G/6G communications, electric vehicles, and medical diagnostics, making it an indispensable partner in the development and deployment of future critical technologies.
Bear Thesis:
  • Integration Risks and Execution Challenges: The complex process of integrating two large entities (II-VI and the former Coherent) carries inherent risks of operational disruptions, cultural clashes, and potential failure to fully achieve anticipated cost savings and strategic benefits, which could impact financial performance.
  • Cyclicality of Key End Markets: A significant portion of Coherent Corp.'s revenue is tied to highly cyclical industries, particularly semiconductors. Downturns in these markets can lead to reduced capital expenditure by customers, negatively impacting demand for Coherent's products and its financial performance.
  • Intense Competition and Pricing Pressures: The global photonics and laser market is highly competitive, featuring numerous established players and new entrants. This intense competition can lead to pricing pressures, requiring continuous investment in R&D and operational efficiency to maintain market share and profitability.
  • Macroeconomic Headwinds and Supply Chain Volatility: Global economic slowdowns, inflationary pressures, rising interest rates, and geopolitical uncertainties can dampen overall customer demand and capital spending. Additionally, reliance on complex global supply chains exposes the company to potential disruptions and increased operational costs.
Main Competitors:
  • IPG Photonics Corporation ($IPGP) (High-power Fiber Lasers), A leading global manufacturer of high-power fiber lasers and amplifiers, IPG Photonics directly competes with Coherent in industrial materials processing applications such as cutting, welding, and additive manufacturing, where fiber lasers are dominant.
  • TRUMPF GmbH + Co. KG (Industrial Lasers & Machine Tools), TRUMPF is a major competitor in industrial laser technology (including CO2, fiber, and ultrafast lasers) and also a significant player in machine tools that integrate these lasers. They compete with Coherent both as a laser source supplier and as a systems provider in materials processing, microelectronics, and medical applications.
  • Lumentum Holdings Inc. ($LITE) (Commercial Lasers & Photonics), Lumentum competes with Coherent in various commercial laser markets, including ultrafast lasers for microelectronics and industrial applications, diode lasers, and certain scientific and medical laser segments. They also have a strong presence in optical communications.
  • MKS Instruments, Inc. (Spectra-Physics & Newport) ($MKSI) (Scientific & Industrial Lasers, Photonics), Through its Spectra-Physics and Newport brands, MKS Instruments is a direct competitor in scientific lasers (e.g., ultrafast, CW, tunable), optical components, and photonics instrumentation, as well as some industrial and medical laser applications, offering a broad range of photonics solutions.
Moat:
Coherent, Inc. (now Coherent Corp. after merging with II-VI) operates in a highly competitive and technologically advanced market for lasers and photonics. Its competitive moat is primarily built on a broad and deep portfolio of diverse laser technologies (including CO2, fiber, ultrafast, excimer, and diode lasers), extensive application expertise across multiple industries (materials processing, microelectronics, scientific, medical), a strong global sales and service network, and significant ongoing investment in research and development leading to a robust patent portfolio. Competition is intense and comes from specialized laser manufacturers focusing on specific technologies (like IPG in fiber lasers), integrated system providers that also produce their own lasers (like TRUMPF), and companies with strong positions in particular laser types or market segments (like Lumentum and MKS Instruments). Sustaining technological leadership, expanding into new high-growth applications, and providing comprehensive, tailored customer solutions are crucial for maintaining market share and profitability.
Income Statements:
Quarterly
Annual
    Unit: USD2022-04-02 2022-01-01 2021-10-02 2021-07-03 2021-04-03 2021-01-02 2020-10-03 2020-07-04 2020-04-04 2019-12-28 2019-09-28 2019-06-29 2019-03-30 2018-12-29 2018-09-29 2018-06-30 2018-03-31 2017-12-30 2017-09-30 2017-09-28 2017-07-01 2017-04-01 2016-12-31 2016-10-01 2016-07-02 2016-04-02 2016-01-02 2015-10-03 2015-07-04 2015-04-04 2014-12-27 2014-09-27 2014-06-28 2014-03-29 2013-12-28 2013-09-28 2013-06-29 2013-03-30 2012-12-29 2012-09-29 2012-06-30 2012-03-31 2011-12-31 2011-10-01 2011-09-30 2011-07-02 2011-04-02 2011-01-01 2010-07-03 2010-04-03 2010-01-02 2009-07-04 2009-04-04 2008-12-27 2008-06-28 2008-03-29 2007-12-29 2007-09-29 2007-06-30 2007-03-31 2006-12-30 2006-09-30 2006-07-01 2006-04-01 2005-12-31 2005-10-01 2005-09-30 2005-07-02 2005-04-02 2005-01-01 2004-10-02 2004-07-03 2004-04-03 2003-12-27 2003-09-30 2003-09-27 2003-06-28 2003-03-29 2002-12-28 2002-09-28 2002-06-29 2002-03-30 2001-12-29 2001-06-30 2001-03-31 
                                                                                         
      net sales
    370,204,000 384,507,000 391,674,000 395,759,000 373,982,000 326,053,000 316,751,000 298,330,000 293,147,000 320,771,000 335,464,000 339,170,000 372,860,000 383,146,000 461,548,000 482,342,000 481,118,000 477,565,000  490,298,000 464,107,000 422,833,000 346,073,000 248,461,000 218,767,000 199,882,000 190,275,000 209,622,000 188,502,000 203,721,000 200,615,000 205,344,000 196,517,000 199,222,000 193,556,000 213,141,000 213,725,000 200,058,000 183,202,000 188,654,000 196,383,000 193,284,000 190,767,000  207,961,000 210,882,000 200,880,000 183,111,000 166,697,000 149,157,000 122,815,000 98,479,000 105,422,000 124,388,000 157,024,000 155,942,000 144,296,000 110,558,250 142,608,000 152,116,000 147,509,000 106,626,500 149,524,000 145,988,000 130,994,000  133,786,000 125,269,000 131,175,000 126,022,000 -361,709,900 127,951,000 125,808,000 107,951,000  101,519,000 99,174,000 103,512,000 102,030,000    96,619,000   
      yoy
    -1.01% 17.93% 23.65% 32.66% 27.57% 1.65% -5.58% -12.04% -21.38% -16.28% -27.32% -29.68% -22.50% -19.77%  -1.62% 3.67% 12.94%  97.33% 112.15% 111.54% 81.88% 18.53% 16.06% -1.88% -5.15% 2.08% -4.08% 2.26% 3.65% -3.66% -8.05% -0.42% 5.65% 12.98% 8.83% 3.50% -3.97%  -5.57% -8.34% -5.03%  24.75% 41.38% 63.56% 85.94% 58.12% 19.91% -21.79% -36.85% -26.94% 12.51% 10.11% 2.52% -2.18% 3.69% -4.63% 4.20% 12.61%  11.76% 16.54% -0.14%  -136.99% -2.10% 4.27% 16.74%  26.04% 26.86% 4.29%     5.60%       
      qoq
    -3.72% -1.83% -1.03% 5.82% 14.70% 2.94% 6.17% 1.77% -8.61% -4.38% -1.09% -9.04% -2.68% -16.99% -4.31% 0.25% 0.74%   5.64% 9.76% 22.18% 39.29% 13.57% 9.45% 5.05% -9.23% 11.20% -7.47% 1.55% -2.30% 4.49% -1.36% 2.93% -9.19% -0.27% 6.83% 9.20% -2.89% -3.94% 1.60% 1.32%   -1.39% 4.98% 9.70% 9.85% 11.76% 21.45% 24.71% -6.59% -15.25% -20.78% 0.69% 8.07% 30.52% -22.47% -6.25% 3.12% 38.34% -28.69% 2.42% 11.45%   6.80% -4.50% 4.09% -134.84% -382.69% 1.70% 16.54%   2.36% -4.19% 1.45%        
      cost of sales
    215,670,000 216,943,000 239,838,000 239,776,000 232,957,000 206,057,000 204,518,000 203,053,000 199,036,000 211,518,000 227,069,000 241,167,000 242,143,000 233,796,000 271,646,000 274,006,000 265,688,000 260,542,000  268,244,000 256,921,000 243,318,000 204,559,000 134,125,000 124,208,000 111,283,000 106,377,000 118,628,000 109,720,000 120,417,000 118,296,000 124,426,000 122,256,000 118,557,000 116,010,000 128,100,000 130,461,000 123,727,000 105,567,000 110,921,000 116,138,000 115,636,000 110,408,000  118,464,000 120,720,000 112,111,000 100,717,000 92,350,000 83,544,000 71,783,000 64,865,000 65,815,000 73,999,000 87,765,000 88,818,000 83,802,000 64,662,750 85,470,000 87,646,000 85,535,000 59,916,000 82,697,000 82,124,000 74,843,000  82,820,000 68,589,000 72,688,000 74,349,000 -213,715,941.9 72,964,000 74,235,000 66,517,000  71,134,000 62,225,000 62,521,000 61,587,000    54,599,000   
      gross profit
    154,534,000 167,564,000 151,836,000 155,983,000 141,025,000 119,996,000 112,233,000 95,277,000 94,111,000 109,253,000 108,395,000 98,003,000 130,717,000 149,350,000 189,902,000 208,336,000 215,430,000 217,023,000  222,054,000 207,186,000 179,515,000 141,514,000 114,336,000 94,559,000 88,599,000 83,898,000 90,994,000 78,782,000 83,304,000 82,319,000 80,918,000 74,261,000 80,665,000 77,546,000 85,041,000 83,264,000 76,331,000 77,635,000 77,733,000 80,245,000 77,648,000 80,359,000  89,497,000 90,162,000 88,769,000 82,394,000 74,347,000 65,613,000 51,032,000 33,614,000 39,607,000 50,389,000 69,259,000 67,124,000 60,494,000 45,895,500 57,138,000 64,470,000 61,974,000 46,710,500 66,827,000 63,864,000 56,151,000  50,966,000 56,680,000 58,487,000 51,673,000 -147,993,958.1 54,987,000 51,573,000 41,434,000  30,385,000 36,949,000 40,991,000 40,443,000    42,020,000   
      yoy
    9.58% 39.64% 35.29% 63.72% 49.85% 9.83% 3.54% -2.78% -28.00% -26.85% -42.92% -52.96% -39.32% -31.18%  -6.18% 3.98% 20.89%  94.21% 119.11% 102.62% 68.67% 25.65% 20.03% 6.36% 1.92% 12.45% 6.09% 3.27% 6.16% -4.85% -10.81% 5.68% -0.11% 9.40% 3.76% -1.70% -3.39%  -10.34% -13.88% -9.47%  20.38% 37.41% 73.95% 145.12% 87.71% 30.21% -26.32% -49.92% -34.53% 9.79% 21.21% 4.12% -2.39% -1.74% -14.50% 0.95% 10.37%  31.12% 12.67% -3.99%  -134.44% 3.08% 13.41% 24.71%  80.97% 39.58% 1.08%     -3.75%       
      qoq
    -7.78% 10.36% -2.66% 10.61% 17.52% 6.92% 17.80% 1.24% -13.86% 0.79% 10.60% -25.03% -12.48% -21.35% -8.85% -3.29% -0.73%   7.18% 15.41% 26.85% 23.77% 20.91% 6.73% 5.60% -7.80% 15.50% -5.43% 1.20% 1.73% 8.96% -7.94% 4.02% -8.81% 2.13% 9.08% -1.68% -0.13% -3.13% 3.34% -3.37%   -0.74% 1.57% 7.74% 10.82% 13.31% 28.57% 51.82% -15.13% -21.40% -27.25% 3.18% 10.96% 31.81% -19.68% -11.37% 4.03% 32.68% -30.10% 4.64% 13.74%   -10.08% -3.09% 13.19% -134.92% -369.14% 6.62% 24.47%   -17.77% -9.86% 1.35%        
      gross margin %
    41.74% 43.58% 38.77% 39.41% 37.71% 36.80% 35.43% 31.94% 32.10% 34.06% 32.31% 28.89% 35.06% 38.98% 41.14% 43.19% 44.78% 45.44%  45.29% 44.64% 42.46% 40.89% 46.02% 43.22% 44.33% 44.09% 43.41% 41.79% 40.89% 41.03% 39.41% 37.79% 40.49% 40.06% 39.90% 38.96% 38.15% 42.38% 41.20% 40.86% 40.17% 42.12%  43.04% 42.75% 44.19% 45.00% 44.60% 43.99% 41.55% 34.13% 37.57% 40.51% 44.11% 43.04% 41.92% 41.51% 40.07% 42.38% 42.01% 43.81% 44.69% 43.75% 42.87%  38.10% 45.25% 44.59% 41.00% 40.92% 42.98% 40.99% 38.38%  29.93% 37.26% 39.60% 39.64% NaN% NaN% NaN% 43.49% NaN% NaN% 
      operating expenses:
                                                                                         
      research and development
    31,679,000 29,769,000 32,056,000 31,982,000 32,007,000 28,221,000 28,821,000 28,283,000 29,794,000 28,680,000 27,258,000 30,692,000 30,461,000 28,942,000 32,108,000 34,303,000 34,783,000 31,392,000  31,063,000 30,483,000 30,536,000 27,084,000 20,265,000 21,441,000 20,955,000 19,140,000 19,988,000 21,270,000 21,024,000 19,173,000 18,674,000 19,046,000 20,413,000 20,937,000 21,556,000 21,782,000 20,146,000 19,301,000 19,852,000 19,306,000 20,323,000 18,779,000  19,718,000 21,738,000 21,246,000 18,530,000 18,264,000 19,488,000 15,410,000 15,529,000 15,610,000 14,778,000 19,076,000 19,428,000 18,319,000 14,135,750 19,337,000 18,884,000 18,322,000 13,148,750 18,714,000 19,263,000 14,618,000  15,187,000 13,882,000 14,175,000 14,086,000 -45,963,987.4 15,505,000 15,538,000 14,921,000  14,124,000 12,694,000 12,261,000 11,672,000    13,928,000   
      selling, general and administrative
    66,517,000 93,774,000 78,754,000 78,219,000 72,662,000 74,228,000 73,081,000 67,525,000 61,307,000 68,551,000 70,551,000 67,686,000 69,463,000 64,557,000 72,758,000 70,291,000 77,146,000 73,437,000  73,482,000 72,383,000 72,451,000 73,768,000 45,168,000 46,256,000 40,940,000 36,774,000 36,052,000 36,154,000 39,482,000 38,141,000 37,617,000 37,226,000 39,296,000 39,891,000 36,437,000 38,748,000 37,346,000 36,982,000 35,617,000 32,894,000 35,377,000 34,631,000  36,459,000 37,983,000 38,979,000 36,078,000 31,584,000 31,164,000 27,979,000 29,223,000 27,962,000 23,628,000 39,480,000 37,384,000 38,818,000 27,429,500 39,095,000 37,139,000 33,484,000 23,842,250 33,827,000 32,131,000 29,411,000  29,836,000 28,855,000 28,765,000 26,826,000 -83,715,977.1 28,626,000 29,132,000 25,958,000  28,905,000 25,437,000 25,923,000 23,664,000    22,719,000   
      merger and acquisition costs
    1,044,000 977,000 1,473,000 2,578,000 231,996,000                                                                                 
      amortization of intangible assets
    563,000 565,000 584,000 1,100,000 596,000 597,000 616,000 643,000 1,296,000 1,432,000 2,012,000 6,782,000 1,926,000 3,040,000 2,527,000 2,607,000 2,950,000 2,606,000  2,964,000 3,743,000 5,439,000 3,878,000 864,000 574,000 700,000 701,000 658,000 647,000 666,000 696,000 733,000 841,000 916,000 934,000 988,000 1,290,000 1,942,000 854,000 5,406,000 1,723,000 1,611,000 1,636,000  1,879,000 1,851,000 2,257,000 2,095,000 2,041,000 1,956,000 1,961,000 1,907,000 1,894,000 1,943,000 2,165,000 2,229,000 2,206,000 1,494,500 2,085,000 1,950,000 1,943,000 1,711,500 2,205,000 2,335,000 2,306,000                     
      total operating expenses
    99,803,000 125,085,000 112,867,000 113,879,000 337,261,000 103,046,000 102,518,000 96,451,000 543,422,000 98,663,000 99,821,000 105,160,000 101,850,000 96,539,000 107,393,000 107,812,000 114,769,000 107,700,000  110,425,000 106,609,000 108,426,000 99,314,000 66,297,000 68,271,000 62,595,000 56,615,000 55,382,000 60,088,000 61,172,000 58,010,000 57,024,000 57,113,000 60,625,000 61,762,000 58,981,000 61,820,000 59,434,000 57,137,000 60,875,000 53,923,000 57,311,000 55,046,000  58,056,000 61,572,000 62,482,000 56,703,000 51,889,000 52,608,000 45,350,000 46,659,000 45,466,000 59,635,000 60,721,000 59,041,000 59,343,000 43,671,750 62,717,000 58,084,000 53,886,000 38,899,250 54,933,000 53,639,000 47,025,000  47,386,000 45,628,000 44,428,000 42,705,000 -135,137,963.8 45,653,000 46,440,000 43,045,000  58,957,000 44,247,000 41,894,000 56,230,000    37,555,000   
      income from operations
    54,731,000 42,479,000 38,969,000 42,104,000 -196,236,000 16,950,000 9,715,000 -1,174,000 -449,311,000 10,590,000 8,574,000 -7,157,000 28,867,000 52,811,000 82,509,000 100,524,000 100,661,000 109,323,000  111,629,000 100,577,000 71,089,000 42,200,000 48,039,000 26,288,000 26,004,000 27,283,000 35,612,000 18,694,000 22,132,000 24,309,000 23,894,000 17,148,000 20,040,000 15,784,000 26,060,000 21,444,000 16,897,000 20,498,000 16,858,000 26,322,000 20,337,000 25,313,000  31,441,000 28,590,000 26,287,000 25,691,000 22,458,000 13,005,000 5,682,000    8,538,000 8,083,000 1,151,000 2,223,750  6,386,000 8,088,000 7,811,250 11,894,000 10,225,000 9,126,000  3,580,000 11,052,000 14,059,000 8,968,000 -12,855,994.3 9,334,000 5,133,000          4,465,000   
      yoy
    -127.89% 150.61% 301.12% -3686.37% -56.33% 60.06% 13.31% -83.60% -1656.49% -79.95% -89.61% -107.12% -71.32% -51.69%  -9.95% 0.08% 53.78%  132.37% 282.60% 173.38% 54.68% 34.90% 40.62% 17.50% 12.23% 49.04% 9.02% 10.44% 54.01% -8.31% -20.03% 18.60% -23.00% 54.59% -18.53% -16.91% -19.02%  -16.28% -28.87% -3.71%  40.00% 119.84% 362.64%    -33.45%     26.57% -85.77% -71.53%  -37.55% -11.37%  232.23% -7.48% -35.09%  -127.85% 18.41% 173.89%                 
      qoq
    28.84% 9.01% -7.45% -121.46% -1257.73% 74.47% -927.51% -99.74% -4342.79% 23.51% -219.80% -124.79% -45.34% -35.99% -17.92% -0.14% -7.92%   10.99% 41.48% 68.46% -12.15% 82.74% 1.09% -4.69% -23.39% 90.50% -15.53% -8.96% 1.74% 39.34% -14.43% 26.96% -39.43% 21.53% 26.91% -17.57% 21.59% -35.95% 29.43% -19.66%   9.97% 8.76% 2.32% 14.40% 72.69% 128.88%     5.63% 602.26% -48.24%   -21.04% 3.54% -34.33% 16.32% 12.04%   -67.61% -21.39% 56.77% -169.76% -237.73% 81.84%              
      operating margin %
    14.78% 11.05% 9.95% 10.64% -52.47% 5.20% 3.07% -0.39% -153.27% 3.30% 2.56% -2.11% 7.74% 13.78% 17.88% 20.84% 20.92% 22.89%  22.77% 21.67% 16.81% 12.19% 19.33% 12.02% 13.01% 14.34% 16.99% 9.92% 10.86% 12.12% 11.64% 8.73% 10.06% 8.15% 12.23% 10.03% 8.45% 11.19% 8.94% 13.40% 10.52% 13.27%  15.12% 13.56% 13.09% 14.03% 13.47% 8.72% 4.63% 0% 0% 0% 5.44% 5.18% 0.80% 2.01% 0% 4.20% 5.48% 7.33% 7.95% 7.00% 6.97%  2.68% 8.82% 10.72% 7.12% 3.55% 7.29% 4.08% 0%  0% 0% 0% 0% NaN% NaN% NaN% 4.62% NaN% NaN% 
      other income:
                                                                                         
      interest income
    168,000 93,000 97,000 90,000 110,000 162,000 147,000 269,000 370,000 267,000 216,000 257,000 418,000 228,000 216,000 444,000 440,000 471,000  530,000 282,000 135,000 143,000    240,000    96,000                                                       
      interest expense
    -3,764,000 -4,095,000 -4,518,000 -4,552,000 -4,512,000 -4,477,000 -4,474,000 -4,046,000 -4,423,000 -4,094,000 -4,328,000 -4,974,000 -4,919,000 -4,901,000 -4,638,000 -4,737,000 -7,725,000 -8,747,000  -9,906,000 -7,494,000 -8,998,000 -7,964,000 -1,238,000 -63,000 -30,000 -15,000 -19,000 -4,000 -14,000 -11,000 -32,000 -9,000 -8,000 -23,000 -104,000 -37,000 -11,000 -12,000 -8,000 -71,000 -5,000 -2,000  -61,000 -54,000                                        
      other—net
    -2,133,000 -2,183,000 -4,812,000 1,185,000 1,876,000 2,026,000 4,763,000 -505,000 -1,610,000 793,000 -1,146,000 331,000 249,000 -4,478,000 -1,405,000 -3,332,000 -2,225,000 -224,000  -1,039,000 -730,000 -1,392,000 12,993,000 -2,619,000 564,000 -2,013,000 -447,000 -2,012,000 -787,000 1,843,000 -770,000 1,709,000 -415,000 990,000 -256,000 -273,000 -964,000 1,243,000 -1,475,000 1,279,000 -1,918,000 1,888,000 318,000  -271,000 562,000 9,181,000 1,586,000  225,000      1,079,000 1,973,000 916,500 1,952,000 731,000 983,000 469,500 116,000 1,110,000 652,000  1,723,000    173,500 614,000    -232,000 1,383,000         
      total other expense
    -5,729,000 -6,185,000 -9,233,000 -3,277,000 -2,526,000 -2,289,000 436,000 -4,282,000 -5,663,000 -3,034,000                 -222,000                                                           
      income before income taxes
    49,002,000 36,294,000 29,736,000 38,827,000 -198,762,000 14,661,000 -113,218,500 -5,456,000 -454,974,000 7,556,000              44,471,000 27,140,000 24,224,000 27,061,000 33,736,000 18,086,000 24,122,000 23,624,000 25,650,000 16,925,000 21,080,000 15,564,000 25,752,000 20,491,000 18,192,000 19,061,000 18,157,000 24,385,000 22,249,000 25,831,000  31,416,000 29,356,000 35,612,000 27,445,000 22,273,000 14,497,000 6,474,000    11,317,000 12,346,000 7,032,000 6,320,500 438,000 11,482,000 13,362,000                         
      provision for income taxes
    15,326,000 6,029,000 8,678,000 8,565,000  14,517,000 2,462,000 3,252,000 -36,061,000 1,763,000 2,692,000 -8,444,000 3,865,000 8,110,000 3,497,000 25,929,000 25,849,000 58,920,000  28,327,000 29,764,000 18,646,000 16,674,000 13,686,000 8,490,000 6,443,000 6,775,000                       6,017,000                                    
      net income
    33,676,000 30,265,000 21,058,000 30,262,000 -158,215,000 144,000 7,689,000 -8,708,000 -418,913,000 5,793,000 624,000 -3,099,000 20,750,000 35,550,000 73,185,000 66,970,000 65,302,000 41,901,000  73,752,000 61,117,000 41,845,000 30,408,000 30,785,000 18,650,000 17,781,000 20,286,000 27,302,000 13,264,000 18,413,000 17,430,000 19,097,000 12,999,000 15,307,000 11,703,000 20,515,000 16,685,000 15,002,000 14,153,000 12,548,000 17,208,000 16,155,000 17,051,000  31,380,000 19,022,000 23,723,000 19,113,000 14,404,000 8,480,000 4,179,000 -7,015,000 -9,130,000 -14,679,000 8,402,000 6,125,000 4,729,000 4,319,250 -763,000 7,282,000 10,758,000 7,085,000 10,851,000 8,173,000 9,316,000  5,251,000 9,645,000 19,577,000 5,391,000 -7,950,996.4 5,154,000 3,103,000 -306,000  -25,049,000 -2,286,000 1,927,000 -20,483,000    2,730,000   
      yoy
    -121.28% 20917.36% 173.87% -447.52% -62.23% -97.51% 1132.21% 180.99% -2118.86% -83.70% -99.15% -104.63% -68.22% -15.16%  -9.20% 6.85% 0.13%  139.57% 227.71% 135.34% 49.90% 12.76% 40.61% -3.43% 16.39% 42.96% 2.04% 20.29% 48.94% -6.91% -22.09% 2.03% -17.31% 63.49% -3.04% -7.14% -17.00%  -45.16% -15.07% -28.12%  117.86% 124.32% 467.67% -372.46% -257.77% -157.77% -50.26% -214.53% -293.06% -439.85% -1201.18% -15.89% -56.04% -39.04% -107.03% -10.90% 15.48%  106.65% -15.26% -52.41%  -166.04% 87.14% 530.91% -1861.76%  -120.58% -235.74% -115.88%     -850.29%       
      qoq
    11.27% 43.72% -30.41% -119.13% -109971.53% -98.13% -188.30% -97.92% -7331.37% 828.37% -120.14% -114.93% -41.63% -51.42% 9.28% 2.55% 55.85%   20.67% 46.06% 37.61% -1.22% 65.07% 4.89% -12.35% -25.70% 105.84% -27.96% 5.64% -8.73% 46.91% -15.08% 30.80% -42.95% 22.95% 11.22% 6.00% 12.79% -27.08% 6.52% -5.25%   64.97% -19.82% 24.12% 32.69% 69.86% 102.92% -159.57% -23.17% -37.80% -274.71% 37.18% 29.52% 9.49% -666.09% -110.48% -32.31% 51.84% -34.71% 32.77% -12.27%   -45.56% -50.73% 263.14% -167.80% -254.27% 66.10% -1114.05%   995.76% -218.63% -109.41%        
      net income margin %
    9.10% 7.87% 5.38% 7.65% -42.31% 0.04% 2.43% -2.92% -142.90% 1.81% 0.19% -0.91% 5.57% 9.28% 15.86% 13.88% 13.57% 8.77%  15.04% 13.17% 9.90% 8.79% 12.39% 8.53% 8.90% 10.66% 13.02% 7.04% 9.04% 8.69% 9.30% 6.61% 7.68% 6.05% 9.63% 7.81% 7.50% 7.73% 6.65% 8.76% 8.36% 8.94%  15.09% 9.02% 11.81% 10.44% 8.64% 5.69% 3.40% -7.12% -8.66% -11.80% 5.35% 3.93% 3.28% 3.91% -0.54% 4.79% 7.29% 6.64% 7.26% 5.60% 7.11%  3.92% 7.70% 14.92% 4.28% 2.20% 4.03% 2.47% -0.28%  -24.67% -2.31% 1.86% -20.08% NaN% NaN% NaN% 2.83% NaN% NaN% 
      net income per share
                  3.01 2.72 2.64 1.7  3.01 2.49 1.71 1.25                                                               
      basic
    1.36 1.23 0.87 1.24 -6.49 0.01 -4.38 -0.36 -17.39 0.24 0.55 -0.13 0.86 1.46          1.27 0.77 0.74 0.85 1.11 0.54 0.75 0.7 0.77 0.52 0.62 0.48 0.84 0.69 0.62 0.6 0.53 0.73 0.69 0.73  1.27 0.76 0.94 0.77 0.58 0.34 0.17 -0.29 -0.38 -0.61 0.36 0.2 0.15 0.138 -0.02 0.23 0.34 0.23 0.35 0.27 0.3     0.18        0.07 -0.7       
      diluted
    1.35 1.21 0.87 1.22 -6.49 0.01 -4.38 -0.36 -17.39 0.24 0.548 -0.13 0.85 1.45          1.25 0.76 0.73 0.84 1.1 0.53 0.74 0.69 0.76 0.52 0.61 0.47 0.83 0.68 0.61 0.58 0.52 0.72 0.67 0.71  1.24 0.74 0.92 0.76 0.57 0.34 0.17 -0.29 -0.38 -0.61 0.35 0.19 0.15 0.135 -0.02 0.23 0.33 0.225 0.34 0.26 0.3     0.17        0.07 -0.7       
      shares used in computation:
                                                                                         
      basic
    24,708 24,542 28 24,435 24,389 24,264 30 24,159 24,095 23,971 -67 24,054 24,232 24,268 -112 24,658 24,761 24,635  27 24,537 24,496 24,347 34 24,192 24,137 23,996 -40 24,737 24,709 24,936 40 24,837 24,782 24,542 83 24,310 24,085 23,770 23 23,633 23,521 23,462  -76 25,066 25,246 24,688 25,022 24,704 24,469 24,331 24,258 24,145 23,514 31,394 31,417 7,847.75 31,417 31,417 31,339 7,728.75 30,868 30,754 31,124  101,000 30,856,000 30,628,000 30,482 7,530,500 30,243,000 30,121,000   136,000 29,537,000 29,265 29,134    28,511,000   
      diluted
    24,935 24,919 28 24,842 24,389 24,455 30 24,159 24,095 24,160 -54 24,054 24,332 24,472 -120 24,877 25,010 25,025  36 24,823 24,757 24,644 60 24,467 24,362 24,236 -26 24,972 24,891 25,197 51 25,115 25,044 24,915 93 24,690 24,475 24,222 22 24,054 23,996 23,961  -98 25,587 25,832 25,268 25,438 24,996 24,678 24,331 24,258 24,145 24,110 31,874 31,959 8,011.25 31,417 31,937 32,125 7,865.25 31,592 31,316 31,475  108,000 31,454,000 31,112,000 30,867 7,625,500 30,620,000 30,551,000   136,000 29,537,000 29,503 29,134    29,079,000   
      goodwill and other impairment charges
            451,025,000                                                                             
      benefit from income taxes
        -40,547,000                       4,181,250 4,822,000 5,709,000 6,194,000 6,553,000 3,926,000 5,773,000 3,861,000 5,237,000 3,806,000 3,190,000 4,908,000 5,609,000 7,177,000 6,094,000 8,780,000  36,000 10,334,000 11,889,000 8,332,000   2,295,000  1,671,000 1,203,000 2,915,000 6,221,000 2,303,000 2,001,250 1,201,000 4,200,000 2,604,000 2,569,500 4,619,000  1,364,000  43,250 2,131,000               1,372,000   
      impairment and other charges
                   611,000                                                                      
      total other income
              -4,447,250 -4,386,000 -4,252,000 -9,151,000 -6,408,750 -7,625,000 -9,510,000 -8,500,000  -3,256,250 -7,942,000 -10,255,000 5,172,000 -3,568,000 852,000 -1,780,000  -1,876,000 -608,000 1,990,000 -685,000 1,756,000 -223,000 1,040,000 -220,000 -308,000 -953,000 1,295,000 -1,437,000 1,299,000 -1,937,000 1,912,000 518,000  -25,000 766,000 9,325,000 1,754,000  1,492,000      4,263,000 5,881,000 4,096,750 6,017,000 5,096,000 5,274,000 1,843,250 3,576,000 2,243,000 1,554,000  3,248,000 724,000 790,000  235,500 350,000 174,000 418,000   330,000 4,795,000        
      income from continuing operations before income taxes
              3,316,000 -11,543,000 24,615,000 43,660,000 76,682,000 92,899,000 91,151,000 100,823,000  101,214,000 92,635,000 60,834,000 47,372,000                                                               
      net income from continuing operations
              624,000 -3,099,000 20,750,000 35,550,000 73,185,000 66,970,000 65,302,000 41,903,000  72,887,000 62,871,000 42,188,000 30,698,000                                                               
      loss from discontinued operations, net of income taxes
                     -2,000  865,000 -1,754,000 -343,000 -290,000                                                               
      gain from business combination
                       -1,354,000   -5,416,000                                                               
      basic net income per share:
                                                                                         
      income per share from continuing operations
                  3.01 2.72 2.64 1.7  2.97 2.56 1.72 1.26                                                               
      loss per share from discontinued operations, net of income taxes
                       0.04 -0.07 -0.01 -0.01                                                               
      net income per share
                  3.01 2.72 2.64 1.7  3.01 2.49 1.71 1.25                                                               
      diluted net income per share:
                                                                                         
      other impairment charges
                    -110,000                                                                     
      impairment of assets held for sale
                     265,000                                                                    
      impairment of investment
                                2,017,000                                                         
      interest and dividend income
                           289,000 351,000 263,000  155,000 183,000 161,000  79,000 201,000 58,000 59,000 69,000 48,000 63,000 50,000 28,000 52,000 29,000 202,000  307,000 258,000 161,000 183,000 274,000 1,290,000   689,000   3,368,000 4,069,000 4,596,500 6,077,000 6,236,000 6,073,000 2,360,250 4,815,000 2,745,000 1,881,000  1,696,000 1,341,000 1,081,000 967,000 -1,911,999.5 574,000 618,000 720,000  1,053,000 995,000 1,426,000 1,897,000    2,338,000   
      impairment of goodwill
                                                         19,286,000                                
      total other income (expense)
                                                                                         
      benefit from (benefit from) income taxes
                                                    7,869,000                                     
      other income
                                                      792,000 3,329,000   2,779,000                               
      other income-net
                                                                                         
      in-process research and development
                                                             550,000 2,200,000   172,500   690,000   1,577,000        1,908,000 4,430,000         
      restructuring and other charges
                                                             62,000  111,000 137,000 24,250 187,000             5,188,250 289,000 405,000 20,059,000       
      foreign exchange gain
                                                                  453,000    -194,000  311,000  -771,999.9  420,000 397,000            
      income before income taxes and minority interest
                                                                 9,654,500 15,470,000 12,468,000      8,558,000                
      income before minority interest
                                                                 7,085,000 10,851,000 8,173,000      5,211,000                
      minority interest in subsidiaries’ losses, net of taxes
                                                                         180,000                
      shares used in computation
                                                                             30,001,000            
      basic
    24,708 24,542 28 24,435 24,389 24,264 30 24,159 24,095 23,971 -67 24,054 24,232 24,268 -112 24,658 24,761 24,635  27 24,537 24,496 24,347 34 24,192 24,137 23,996 -40 24,737 24,709 24,936 40 24,837 24,782 24,542 83 24,310 24,085 23,770 23 23,633 23,521 23,462  -76 25,066 25,246 24,688 25,022 24,704 24,469 24,331 24,258 24,145 23,514 31,394 31,417 7,847.75 31,417 31,417 31,339 7,728.75 30,868 30,754 31,124  101,000 30,856,000 30,628,000 30,482 7,530,500 30,243,000 30,121,000   136,000 29,537,000 29,265 29,134    28,511,000   
      diluted
    24,935 24,919 28 24,842 24,389 24,455 30 24,159 24,095 24,160 -54 24,054 24,332 24,472 -120 24,877 25,010 25,025  36 24,823 24,757 24,644 60 24,467 24,362 24,236 -26 24,972 24,891 25,197 51 25,115 25,044 24,915 93 24,690 24,475 24,222 22 24,054 23,996 23,961  -98 25,587 25,832 25,268 25,438 24,996 24,678 24,331 24,258 24,145 24,110 31,874 31,959 8,011.25 31,417 31,937 32,125 7,865.25 31,592 31,316 31,475  108,000 31,454,000 31,112,000 30,867 7,625,500 30,620,000 30,551,000   136,000 29,537,000 29,503 29,134    29,079,000   
      restructuring, impairment and other charges
                                                                         300,000 63,750 18,000  237,000            
      benefit for income taxes
                                                                   4,295,000      3,347,000 -6,273,997.8 4,261,000 2,567,000     2,033,000        
      foreign exchange loss
                                                                                         
      income from operations before income taxes and minority interest
                                                                    10,680,000             3,892,000        
      income from operations before minority interest
                                                                    9,316,000             1,859,000        
      intangibles amortization
                                                                      1,173,750 1,674,000 1,528,000 1,493,000   1,770,000 1,929,000    947,000 835,000    908,000   
      income from continuing operations before income taxes and minority interest
                                                                      6,828,000 11,776,000 14,849,000  -13,797,994.3 9,684,000 5,307,000          4,247,000   
      income from continuing operations before minority interest
                                                                      5,251,000 9,645,000 19,577,000  -7,523,996.5 5,423,000 2,740,000          2,875,000   
      minority interest in subsidiaries’ (earnings) losses
                                                                      45,000    52,250  145,000 333,000            
      income from continuing operations
                                                                      5,251,000 9,645,000 19,577,000  1,933,250 5,154,000 2,885,000   -870 -80      2,730,000   
      discontinued operations, net of income taxes of 145
                                                                          54,500  218,000             
      net income per basic share:
                                                                                         
      income from discontinued operations
                                                                                         
      net income per diluted share:
                                                                                         
      minority interest in subsidiaries’ losses
                                                                                         
      income from discontinued operations, net of income taxes
                                                                          2.5  10             
      intangibles assets amortization
                                                                          1,300,750 1,504,000              
      write-down of lumenis investment
                                                                                         
      other-net
                                                                             149,000            
      net income per basic and diluted share
                                                                             -10            
      shares used in computation
                                                                             30,001,000            
      impairment loss on equipment
                                                                                         
      goodwill impairment
                                                                               589,500  2,358,000        
      intangible assets amortization
                                                                               794,750 1,397,000         
      minority interest in subsidiaries’ earnings
                                                                               224,250 1,106,000 68,000        
      discontinued operations, net of income taxes of 0, 1,108, 0 and 1,108
                                                                                         
      net income per basic and diluted share:
                                                                                         
      other - net
                                                                                 4,588,000        
      minority interest in subsidiaries earnings
                                                                                         
      discontinued operations,net of income taxes of 1,509
                                                                                         
      income before accounting changes
                                                                                      2,730,000   
      cumulative effect of accounting changes
                                                                                         
      cumulative effect of accounting change
                                                                                         
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2022-04-02 2022-01-01 2021-10-02 2021-07-03 2021-04-03 2021-01-02 2020-10-03 2020-07-04 2020-04-04 2019-12-28 2019-09-28 2019-06-29 2019-03-30 2018-12-29 2018-09-29 2018-06-30 2018-03-31 2017-12-30 2017-09-30 2017-09-28 2017-07-01 2017-04-01 2016-12-31 2016-10-01 2016-07-02 2016-04-02 2016-01-02 2015-10-03 2015-07-04 2015-04-04 2014-12-27 2014-09-27 2014-06-28 2014-03-29 2013-12-28 2013-09-28 2013-06-29 2013-03-30 2012-12-29 2012-09-29 2012-06-30 2012-03-31 2011-12-31 2011-10-01 2011-09-30 2011-07-02 2011-04-02 2011-01-01 2010-07-03 2010-04-03 2010-01-02 2009-07-04 2009-04-04 2008-12-27 2008-06-28 2008-03-29 2007-12-29 2007-09-29 2007-06-30 2007-03-31 2006-12-30 2006-09-30 2006-07-01 2006-04-01 2005-12-31 2005-09-30 2005-07-02 2005-04-02 2005-01-01 2004-09-30 2004-07-03 2004-04-03 2003-12-27 2003-09-30 2003-06-28 2003-03-29 2002-12-28 2001-12-29 2001-06-30 2001-03-31 
                                                                                      
        assets
                                                                                      
        current assets:
                                                                                      
        cash and cash equivalents
      402,020,000 392,552,000 456,534,000 394,098,000 353,049,000 508,214,000 440,258,000 378,992,000 369,251,000 349,592,000 305,833,000 316,458,000 337,321,000 314,997,000 310,495,000 232,458,000 308,987,000 385,735,000 443,066,000 443,066,000 472,307,000 432,980,000 360,217,000 354,347,000 139,407,000 157,176,000 142,343,000 130,607,000 103,138,000 115,081,000 129,420,000 91,217,000 149,568,000 140,251,000 138,375,000 110,444,000 81,311,000 93,604,000 87,996,000 67,761,000 82,580,000 86,064,000 167,662,000 167,061,000 167,061,000 199,681,000 200,117,000 227,515,000 210,351,000 192,166,000 199,760,000 182,331,000 182,951,000 185,235,000 194,131,000 169,784,000 320,795,000  338,899,000 411,867,000 434,826,000  421,005,000 353,294,000 108,260,000 97,507,000 97,355,000 99,002,000 105,249,000 87,659,000 89,468,000 83,070,000 88,043,000 76,541,000 84,629,000 92,665,000 112,002,000 82,168,000   
        restricted cash
      1,457,000 1,492,000 1,527,000 1,559,000 1,534,000 801,000 765,000 736,000 704,000 728,000 792,000 825,000 814,000 827,000 858,000 1,082,000 1,144,000 1,100,000 1,097,000 1,097,000 1,060,000 1,284,000 2,232,000                        625,000 625,000 625,000      2,755,000 2,758,000 2,514,000                        
        accounts receivable
      262,956,000 243,378,000 249,389,000 256,197,000 248,856,000 226,199,000 220,289,000 197,757,000 202,699,000 235,933,000 267,553,000 269,057,000 313,351,000 330,892,000 355,208,000 337,560,000 312,938,000 309,132,000 305,668,000 305,668,000 277,853,000 252,542,000 241,112,000 165,715,000 150,184,000 150,409,000 144,595,000 142,260,000 144,688,000 124,227,000 130,461,000 137,324,000 130,833,000 137,470,000 115,680,000 136,759,000 146,184,000 134,479,000 126,010,000 144,345,000 141,332,000 126,588,000 130,581,000 141,037,000 141,037,000 143,400,000 134,121,000 107,938,000 98,355,000 84,598,000 76,136,000 75,120,000 81,302,000 95,196,000 110,371,000 112,694,000 96,971,000  100,432,000 107,279,000 95,034,000  102,657,000 99,005,000 84,332,000 87,684,000 81,529,000 90,301,000 86,694,000 96,825,000 88,409,000 91,775,000  73,118,000 74,286,000 83,831,000 80,898,000 74,230,000   
        inventories
      417,275,000 393,629,000 392,241,000 400,547,000 393,672,000 416,381,000 426,756,000 448,972,000 457,358,000 449,571,000 442,530,000 469,486,000 483,741,000 493,156,000 486,741,000 494,967,000 492,686,000 432,809,000 414,807,000 414,807,000 402,849,000 388,242,000 386,013,000 212,898,000 200,171,000 179,067,000 158,006,000 156,614,000 157,778,000 153,659,000 161,993,000 170,483,000 179,767,000 176,462,000 170,958,000 168,067,000 169,003,000 166,865,000 169,002,000 160,113,000 160,095,000 157,057,000 148,047,000 152,385,000 152,385,000 149,465,000 139,219,000 121,210,000 99,409,000 99,144,000 98,924,000 109,039,000 114,239,000 117,973,000 123,444,000 116,567,000 112,889,000  115,079,000 103,417,000 99,792,000  106,139,000 95,633,000 98,495,000 102,730,000 113,593,000 108,907,000 109,688,000 104,698,000 107,045,000 106,353,000 103,582,000 100,147,000 106,153,000 94,960,000 94,199,000 107,102,000   
        prepaid expenses and other assets
      91,884,000 100,389,000 79,594,000 87,744,000 83,215,000 91,814,000 88,250,000 90,237,000 89,045,000 86,997,000 77,993,000 87,372,000 79,465,000 84,141,000 85,080,000 88,490,000 85,446,000 77,003,000 70,268,000 70,268,000 74,827,000 73,802,000 66,981,000 37,073,000 36,349,000 34,602,000 32,733,000 28,294,000 47,316,000 38,538,000 34,021,000 27,839,000 67,644,000 52,556,000 51,529,000 52,577,000 68,653,000 58,999,000 55,611,000 61,730,000 71,873,000 59,174,000 52,314,000 44,964,000 44,964,000 63,240,000 54,039,000 45,416,000 49,634,000 52,708,000 51,827,000 54,048,000 48,314,000 45,855,000 59,818,000 57,804,000 47,540,000  41,563,000 37,430,000 25,338,000  28,578,000 20,100,000 13,483,000 17,034,000 22,063,000 19,541,000 16,313,000 19,350,000 25,602,000 23,702,000 26,052,000 45,693,000 62,395,000 36,832,000 46,024,000 29,851,000   
        total current assets
      1,175,592,000 1,131,440,000 1,179,285,000 1,155,274,000 1,095,454,000 1,278,770,000 1,211,664,000 1,158,592,000 1,119,173,000 1,122,821,000 1,094,821,000 1,145,313,000 1,226,172,000 1,229,032,000 1,238,502,000 1,154,557,000 1,247,407,000 1,252,067,000 1,311,664,000 1,311,664,000 1,261,572,000 1,214,938,000 1,122,164,000 815,639,000 760,316,000 725,136,000 671,508,000 680,801,000 710,939,000 684,690,000 673,191,000 681,055,000 704,837,000 672,236,000 633,376,000 629,226,000 608,088,000 586,099,000 551,483,000 614,485,000 602,791,000 579,968,000 557,290,000 580,646,000 580,646,000 644,770,000 619,382,000 593,221,000 522,312,000 520,994,000 486,461,000 484,278,000 475,054,000 489,669,000 531,967,000 514,833,000 687,832,000  826,070,000 825,777,000 775,587,000  744,811,000 699,180,000 488,007,000 491,721,000 485,322,000 483,068,000 460,272,000 450,172,000 431,582,000 411,645,000 384,711,000 398,982,000 456,817,000 527,124,000 526,425,000 568,385,000   
        property and equipment
      305,916,000 306,872,000 302,613,000 295,481,000 264,383,000 260,207,000 245,678,000 251,453,000 242,858,000 327,673,000 323,434,000 323,974,000 318,989,000 320,933,000 311,793,000 303,214,000 307,330,000 291,308,000 278,850,000 278,850,000 268,622,000 256,024,000 251,090,000 127,443,000 111,738,000 108,575,000 99,732,000 102,445,000 98,996,000 100,903,000 103,978,000 107,424,000 112,530,000 114,146,000 114,405,000 114,333,000 113,952,000 114,368,000 116,574,000 115,096,000 114,898,000 114,439,000 106,028,000 104,504,000 104,504,000 103,249,000 98,069,000 88,343,000 91,488,000 94,972,000 100,062,000 99,418,000 100,094,000 102,465,000 105,873,000 107,475,000 102,796,000  127,603,000 149,644,000 148,912,000  150,416,000 151,339,000 153,095,000 155,316,000 156,627,000 162,455,000 168,107,000 166,054,000 167,708,000 167,443,000 171,110,000 146,399,000 290,087,000 278,163,000 267,967,000 261,314,000   
        goodwill
      102,746,000 103,785,000 105,261,000 106,654,000 101,953,000 104,742,000 101,317,000 98,647,000 95,711,000 433,643,000 427,101,000 439,139,000 435,997,000 442,236,000 442,940,000 444,066,000 460,921,000 418,080,000 417,694,000 417,694,000 410,417,000 360,576,000 351,311,000 101,458,000 101,308,000 102,876,000 100,175,000 101,817,000 100,096,000 99,388,000 106,602,000 109,513,000 114,779,000 115,354,000 114,638,000 113,408,000 110,465,000 109,242,000 111,624,000 77,689,000 73,751,000 75,806,000 74,756,000 75,954,000 75,954,000 79,824,000 78,567,000 69,187,000 67,518,000 66,434,000 68,916,000 65,614,000 63,513,000 65,166,000 87,636,000 87,761,000 83,853,000  82,090,000 73,758,000 73,216,000  72,096,000 69,895,000 68,211,000 68,097,000 67,520,000 58,612,000 55,279,000 53,104,000 52,691,000 52,473,000 52,376,000 50,952,000 54,438,000 34,720,000     
        intangible assets
      12,133,000 13,146,000 14,740,000 17,496,000 16,876,000 19,934,000 21,765,000 24,005,000 26,218,000 73,831,000 84,813,000 101,614,000 119,258,000 135,941,000 142,293,000 157,364,000 180,642,000 174,531,000 190,027,000 190,027,000 202,690,000 206,506,000 233,634,000 13,874,000 16,092,000 18,510,000 20,070,000 22,776,000 22,163,000 23,896,000 28,481,000 31,666,000 36,041,000 38,698,000 40,832,000 42,971,000 44,108,000 46,021,000 50,127,000 9,473,000 13,076,000 14,746,000 16,405,000 17,980,000 17,980,000 20,178,000 21,820,000 17,726,000 21,660,000 20,740,000 23,064,000 21,164,000 22,652,000 24,989,000 30,589,000 32,780,000 33,585,000  36,924,000 35,819,000 37,522,000  38,694,000 39,423,000 41,287,000 42,186,000 44,366,000 33,693,000 34,963,000 35,454,000 37,500,000 38,689,000 40,343,000 40,327,000 38,220,000      
        non-current restricted cash
      6,998,000 16,225,000 4,460,000 14,587,000 4,508,000 4,661,000 4,497,000 4,486,000 4,341,000 12,258,000 12,036,000 12,486,000 12,338,000 12,514,000 12,692,000 12,738,000 13,432,000 12,957,000 12,924,000 12,924,000 12,524,000 11,786,000 11,543,000                                                          
        other assets
      267,010,000 276,932,000 282,571,000 272,695,000 272,079,000 221,322,000 242,575,000 232,942,000 237,076,000 233,832,000 140,964,000 114,132,000 109,514,000 112,956,000 111,749,000 115,629,000 126,853,000 127,716,000 126,641,000 126,641,000 122,604,000 125,510,000 119,829,000 102,734,000 92,856,000 93,446,000 93,871,000 61,108,000 64,898,000 66,116,000 65,755,000 69,717,000 68,986,000 68,280,000 68,769,000 66,540,000 68,141,000 67,633,000 67,296,000 64,029,000 65,846,000 63,062,000 63,650,000 64,182,000 64,182,000 72,372,000 69,984,000 71,480,000 82,369,000 85,689,000 92,202,000 88,673,000 79,885,000 78,628,000 80,048,000 68,954,000 76,139,000  67,397,000 58,017,000 65,604,000  55,655,000 55,433,000 48,690,000 39,750,000 32,678,000 43,669,000 36,441,000 33,491,000 31,036,000 29,963,000 32,127,000 34,045,000 22,758,000 48,521,000 77,458,000 88,689,000   
        total assets
      1,870,395,000 1,848,400,000 1,888,930,000 1,862,187,000 1,755,253,000 1,889,636,000 1,827,496,000 1,770,125,000 1,725,377,000 2,204,058,000 2,083,169,000 2,136,658,000 2,222,268,000 2,253,612,000 2,259,969,000 2,187,568,000 2,336,585,000 2,276,659,000 2,337,800,000 2,337,800,000 2,278,429,000 2,175,340,000 2,089,571,000 1,161,148,000 1,082,310,000 1,048,543,000 985,356,000 968,947,000 997,092,000 974,993,000 978,007,000 999,375,000 1,037,173,000 1,008,714,000 972,020,000 966,478,000 944,754,000 923,363,000 897,104,000 880,772,000 870,362,000 848,021,000 818,129,000 843,266,000 843,266,000 920,393,000 887,822,000 839,957,000 785,347,000 788,829,000 770,705,000 759,147,000 741,198,000 760,917,000 836,113,000 811,803,000 984,205,000  1,163,112,000 1,144,356,000 1,104,620,000     798,290,000     744,273,000          
        liabilities and stockholders' equity
                                                                                      
        current liabilities:
                                                                                      
        short-term borrowings and current-portion of long-term obligations
      9,571,000 9,005,000 18,395,000 17,730,000 16,875,000 17,136,000 16,817,000 16,554,000 16,275,000 16,809,000  45,283,000 46,979,000 46,670,000  7,076,000 7,422,000 6,928,000   5,485,000 5,161,000 7,183,000                                                          
        accounts payable
      106,071,000 100,424,000 104,539,000 108,831,000 93,028,000 62,412,000 60,225,000 68,484,000 62,029,000 55,851,000 51,531,000 62,954,000 68,155,000 74,738,000 70,292,000 82,602,000 93,309,000 81,397,000 75,860,000 75,860,000 72,755,000 73,512,000 66,439,000 45,182,000 44,182,000 43,458,000 28,858,000 33,379,000 32,196,000 31,949,000 27,040,000 32,784,000 32,691,000 33,708,000 30,689,000 36,565,000 40,869,000 39,443,000 29,396,000 29,088,000 38,287,000 40,831,000 35,379,000 39,841,000 39,841,000 45,287,000 47,119,000 40,869,000 31,844,000 29,382,000 24,359,000 18,226,000 20,316,000 21,634,000 29,377,000 33,622,000 26,585,000  33,082,000 33,861,000 27,941,000  31,070,000 24,365,000 21,310,000 18,451,000 19,457,000 17,226,000 20,220,000 17,648,000 20,622,000 21,311,000 16,778,000 17,632,000 15,740,000 15,817,000 13,919,000 14,741,000   
        income taxes payable
      35,207,000 27,051,000 20,991,000 12,784,000 9,614,000 6,561,000 6,861,000 3,922,000 6,925,000 8,365,000 6,185,000 11,219,000 85,811,000 94,302,000 114,145,000 104,193,000 105,395,000 114,036,000 103,206,000 103,206,000 71,427,000 60,609,000 41,191,000 19,870,000 10,136,000 11,545,000 10,557,000 4,279,000 923,000 1,036,000 1,262,000 2,029,000 13,900,000 11,977,000 10,364,000 24,695,000 18,431,000 28,430,000 27,621,000 33,944,000 21,283,000 13,305,000 15,258,000 23,929,000 23,929,000 17,901,000 14,380,000 11,525,000 1,631,000 2,159,000 1,617,000 1,665,000 1,956,000 1,942,000 8,749,000 6,134,000 3,071,000  25,395,000 20,085,000 15,531,000  14,837,000 13,250,000 11,112,000 16,597,000 10,199,000 7,997,000 7,123,000 9,603,000 6,570,000 1,709,000 1,270,000 1,361,000 1,775,000 4,228,000 541,000 2,504,000   
        other current liabilities
      203,114,000 208,896,000 238,290,000 231,922,000 223,475,000 210,554,000 184,155,000 174,557,000 176,065,000 175,398,000 167,735,000 169,058,000 163,953,000 161,401,000 183,329,000 158,285,000 195,842,000 190,840,000 235,001,000 235,001,000 229,642,000 231,004,000 198,281,000 116,442,000 92,061,000 89,808,000 79,219,000 84,941,000 96,664,000 99,159,000 87,856,000 82,506,000 105,330,000 99,841,000 90,248,000 84,566,000 103,682,000 103,540,000 101,539,000 90,739,000 108,481,000 99,419,000 94,573,000 98,620,000 98,620,000 112,658,000 110,986,000 88,124,000 98,550,000 84,972,000 71,911,000 80,579,000 74,249,000 70,676,000 103,035,000 91,337,000 85,654,000  94,869,000 89,137,000 75,956,000  67,301,000 57,570,000 54,853,000 63,803,000 65,647,000 66,589,000 58,948,000 63,578,000 65,721,000 64,576,000 60,129,000 67,980,000 62,310,000 58,472,000 58,017,000 53,760,000   
        total current liabilities
      353,963,000 345,376,000 382,215,000 371,267,000 342,992,000 296,663,000 268,058,000 263,517,000 261,294,000 256,423,000 240,314,000 288,514,000 364,898,000 377,111,000 372,838,000 352,156,000 401,968,000 393,201,000 419,145,000 419,145,000 379,309,000 370,286,000 313,094,000 201,494,000 166,379,000 149,811,000 123,634,000 122,599,000 129,783,000 132,144,000 116,158,000 117,319,000 152,757,000 145,526,000 131,301,000 145,828,000 162,988,000 171,424,000 158,571,000 153,788,000 168,068,000 153,571,000 145,225,000 162,405,000 162,405,000 175,860,000 172,500,000 140,534,000 132,044,000 116,533,000 97,908,000 100,478,000 96,529,000 94,260,000 141,536,000 131,102,000 115,319,000  353,144,000 342,867,000 319,198,000  113,208,000 107,922,000 100,010,000 111,587,000 108,283,000 105,172,000 99,700,000 104,529,000 106,952,000 101,947,000 92,339,000 101,113,000 119,531,000 86,167,000 94,158,000 104,527,000   
        long-term obligations
      401,540,000 413,799,000 425,800,000 437,269,000 409,622,000 428,823,000 411,140,000 397,264,000 381,718,000 396,153,000 392,238,000 409,836,000 405,837,000 413,505,000 420,711,000 422,285,000 449,653,000 503,005,000 589,001,000 589,001,000 652,700,000 660,105,000 677,323,000                 2,000 6,000 11,000 15,000 19,000 19,000 23,000 26,000 30,000 37,000 39,000 44,000 8,000 9,000 12,000 17,000 19,000 20,000  1,151,000 1,336,000 1,318,000  1,451,000 1,376,000   614,000 13,961,000 14,149,000 14,215,000 14,505,000 27,643,000 27,667,000 27,911,000 4,205,000 43,308,000 43,664,000 57,694,000   
        other long-term liabilities
      180,698,000 191,241,000 212,730,000 214,195,000 207,686,000 212,272,000 221,074,000 215,838,000 208,935,000 245,507,000 165,881,000 137,097,000 138,751,000 145,513,000 151,956,000 181,976,000 195,283,000 185,072,000 166,390,000 166,390,000 178,378,000 168,686,000 172,173,000 48,826,000 44,985,000 49,183,000 51,483,000 49,930,000 53,345,000 52,364,000 54,223,000 62,407,000 65,900,000 64,702,000 65,211,000 62,132,000 62,759,000 64,663,000 67,269,000 55,326,000 53,936,000 57,594,000 63,565,000 62,841,000 62,841,000 82,070,000 78,564,000 80,417,000 82,288,000 88,025,000 92,054,000 88,223,000 83,325,000 87,885,000 95,701,000 90,098,000 88,882,000  46,753,000 42,499,000 41,791,000  61,686,000 60,206,000 58,680,000 50,437,000 51,309,000 52,613,000 50,579,000 49,128,000 39,728,000 36,364,000 32,088,000 29,008,000 47,990,000 65,047,000 60,741,000 55,054,000   
        commitments and contingencies
                                                                                      
        stockholders' equity:
                                                                                      
        common stock, authorized—500,000 shares, par value 0.01 per share...
                                                                                      
        outstanding— 24,779 shares and 24,538 shares, respectively
      246,000                                                                                
        additional paid-in capital
      131,452,000 123,964,000 123,135,000 113,394,000 97,490,000 89,064,000 80,275,000 66,141,000 44,621,000 34,464,000 34,320,000 24,475,000 34,736,000 51,851,000 78,700,000 70,051,000 155,763,000 147,764,000 171,403,000 171,403,000 162,525,000 151,356,000 145,494,000 151,298,000 145,350,000 136,171,000 130,537,000 128,607,000 174,055,000 166,085,000 168,806,000 184,042,000 179,172,000 171,209,000 166,399,000 162,253,000 156,824,000 149,323,000 137,079,000 131,708,000 128,776,000 122,693,000 114,829,000 130,250,000 130,250,000 183,245,000 187,930,000 205,899,000 196,450,000 205,207,000 193,096,000 187,197,000 184,940,000 182,801,000 161,607,000 159,422,000 382,873,000  379,594,000 377,850,000 374,337,000  334,770,000 318,126,000 324,214,000 328,580,000 326,018,000 316,516,000 312,067,000 308,236,000 306,997,000 304,338,000 301,771,000 299,378,000 296,340,000 287,984,000 287,343,000 275,298,000   
        accumulated other comprehensive loss
      -27,069,000 -22,115,000 -20,818,000 -18,748,000 -17,084,000 -9,948,000 -25,667,000 -37,562,000 -44,825,000 -21,036,000            -12,178,000 -13,753,000 -5,300,000 -8,449,000 -2,016,000 -17,911,000                                                      
        retained earnings
      829,565,000 795,889,000 765,624,000 744,566,000 714,304,000 872,519,000 872,375,000 864,686,000 873,394,000 1,292,307,000 1,286,514,000 1,285,890,000 1,288,989,000 1,268,239,000 1,232,689,000 1,159,504,000 1,092,534,000 1,027,232,000 971,710,000 971,710,000 897,958,000 836,841,000 794,996,000 764,588,000 733,803,000 715,153,000 697,372,000 677,086,000 649,784,000 636,520,000 618,107,000 600,677,000 581,580,000 568,581,000 553,274,000 541,571,000 521,056,000 504,371,000 489,369,000 499,256,000 486,708,000 469,500,000 453,345,000 436,294,000 436,294,000 404,914,000 385,892,000 362,169,000 333,203,000 318,799,000 310,319,000 310,635,000 317,650,000 326,780,000 337,312,000 328,910,000 322,785,000  320,811,000 321,574,000 314,292,000  307,957,000 297,106,000 288,933,000 279,617,000 274,366,000 264,721,000 249,676,000 244,285,000 234,517,000 229,363,000 226,260,000 226,566,000 251,615,000 253,901,000 251,974,000 344,155,000   
        total stockholders' equity
      934,194,000 897,984,000 868,185,000 839,456,000   927,224,000    1,284,736,000    1,314,464,000    1,163,264,000 1,163,264,000    910,828,000    796,418,000    819,649,000    758,518,000    671,656,000    618,001,000 618,001,000                                    
        total liabilities and stockholders' equity
      1,870,395,000 1,848,400,000 1,888,930,000 1,862,187,000   1,827,496,000    2,083,169,000    2,259,969,000    2,337,800,000 2,337,800,000    1,161,148,000    968,947,000    999,375,000    966,478,000    880,772,000    843,266,000 843,266,000                                    
        outstanding— 24,764 shares and 24,538 shares, respectively
       246,000                                                                               
        short-term investments
         15,129,000 15,128,000 35,361,000 35,346,000 41,898,000 116,000  120,000 2,115,000 11,480,000 5,019,000 120,000  37,127,000 37,711,000 32,510,000 32,510,000 120,000 125,000 125,000 45,606,000 234,205,000 203,882,000 193,831,000 194,908,000 233,628,000 229,353,000 193,531,000 227,058,000 153,692,000 143,217,000 135,302,000 139,666,000 120,371,000 110,386,000 91,781,000 157,168,000 127,024,000 129,111,000 35,421,000 53,142,000 53,142,000 67,758,000 70,506,000 69,059,000 43,656,000 72,943,000 40,866,000 39,557,000 23,849,000 14,644,000 3,586,000 14,842,000 67,569,000  179,486,000 117,127,000 85,862,000  42,427,000 75,842,000 132,040,000 133,407,000 112,240,000 113,493,000 89,688,000 83,075,000 64,520,000 58,508,000 48,116,000 58,407,000 85,146,000 151,985,000 127,930,000 243,089,000   
        common stock
                                                                                296,000   284,000   
        outstanding—24,538 shares and 24,257 shares, respectively
        244,000                                                                              
        outstanding— 24,535 shares and 24,257 shares, respectively
         244,000                                                                             
        liabilities and stockholders’ equity
                                                                                      
        outstanding— 24,464 shares and 24,257 shares, respectively
          243,000                                                                            
        total stockholders’ equity
          794,953,000 951,878,000  893,506,000 873,430,000 1,305,975,000  1,301,211,000 1,312,782,000 1,317,483,000  1,231,151,000 1,289,681,000 1,195,381,000   1,068,042,000 976,263,000 926,981,000  870,946,000 849,549,000 810,239,000  813,964,000 790,485,000 807,626,000  818,516,000 798,486,000 775,508,000  719,007,000 687,276,000 671,264,000  648,352,000 636,845,000 609,324,000   662,440,000 636,732,000 618,976,000 570,978,000 584,232,000 580,699,000 570,438,000 561,335,000 578,760,000 598,859,000 590,584,000 779,984,000  762,064,000 757,654,000 742,313,000  688,336,000 648,624,000 641,799,000 636,266,000 627,531,000 626,296,000 613,683,000 588,581,000 576,073,000 566,298,000 561,240,000 543,858,000 566,710,000 550,920,000 544,750,000 596,266,000   
        total liabilities and stockholders’ equity
          1,755,253,000 1,889,636,000  1,770,125,000 1,725,377,000 2,204,058,000  2,136,658,000 2,222,268,000 2,253,612,000  2,187,568,000 2,336,585,000 2,276,659,000   2,278,429,000 2,175,340,000 2,089,571,000  1,082,310,000 1,048,543,000 985,356,000  997,092,000 974,993,000 978,007,000  1,037,173,000 1,008,714,000 972,020,000  944,754,000 923,363,000 897,104,000  870,362,000 848,021,000 818,129,000   920,393,000 887,822,000 839,957,000 785,347,000 788,829,000 770,705,000 759,147,000 741,198,000 760,917,000 836,113,000 811,803,000 984,205,000  1,163,112,000 1,144,356,000 1,104,620,000     798,290,000     744,273,000          
        outstanding— 24,447 shares and 24,257 shares, respectively
           243,000                                                                           
        outstanding—24,257 shares and 23,982 shares, respectively
            241,000                                                                          
        outstanding— 24,256 shares and 23,982 shares, respectively
             241,000                                                                         
        outstanding— 24,192 shares and 23,982 shares, respectively
              240,000                                                                        
        outstanding— 24,153 shares and 23,982 shares, respectively
               240,000                                                                       
        short-term borrowings and current portion of long-term obligations
                14,863,000        5,078,000 5,078,000                                                             
        outstanding—23,982 shares and 24,299 shares, respectively
                238,000 238,000                                                                     
        accumulated other comprehensive income
                -36,336,000 -9,392,000 -11,183,000 -2,849,000 2,833,000 1,354,000 41,137,000 20,138,000 19,906,000 19,906,000 7,314,000       -9,513,000 -10,122,000 -12,366,000 20,465,000 34,682,000 57,516,000 58,448,000 55,587,000 54,450,000 40,884,000 33,340,000 44,576,000 40,455,000 32,632,000 44,416,000 40,916,000 51,221,000 51,221,000 74,032,000 62,660,000 50,657,000 41,077,000 59,976,000 77,038,000 72,362,000 58,502,000 68,937,000 99,705,000 102,018,000 74,013,000  61,346,000 57,917,000 53,695,000  45,623,000 33,411,000 28,668,000 30,846,000 30,178,000 45,442,000 52,359,000 36,516,000 35,016,000 33,090,000 33,701,000 18,409,000 19,252,000 9,885,000 7,001,000    
        outstanding—24,137 shares and 24,299 shares, respectively
                  240,000                                                                    
        outstanding—24,327 shares and 24,299 shares, respectively
                   242,000                                                                   
        assets held for sale
                      9,079,000 8,577,000 44,248,000 44,248,000                                       21,242,000                      
        current portion of long-term obligations
                    5,072,000                     2,000 6,000 11,000 15,000 17,000 17,000 16,000 15,000 15,000 15,000 14,000 15,000 16,000 19,000 20,000 21,000 8,000 8,000 8,000 9,000 9,000 9,000  8,000 8,000 8,000   12,737,000 12,735,000 12,736,000 12,980,000 13,360,000 13,409,000 13,700,000 14,039,000 14,351,000 14,162,000 14,140,000 39,706,000 7,429,000 7,781,000 9,986,000   
        outstanding—24,299 shares and 24,631 shares, respectively
                    242,000 242,000                                                                 
        stockholders’ equity:
                                                                                      
        outstanding—24,834 shares and 24,631 shares, respectively
                      247,000                                                                
        outstanding—24,822 shares and 24,631 shares, respectively
                       247,000                                                               
        outstanding—24,631 shares and 24,324 shares, respectively
                        245,000 245,000 245,000                                                            
        assets held-for-sale
                          32,556,000 65,963,000 65,484,000                                                          
        outstanding—24,578 shares and 24,324 shares, respectively
                           244,000                                                           
        outstanding—24,553 shares and 24,324 shares, respectively
                            244,000                                                          
        short term borrowings
                             20,000,000                                                         
        authorized—500,000 shares;
                                                                                      
        outstanding—24,324 shares in 2016 and 23,970 shares in 2015
                             242,000                                                         
        short-term borrowings
                              20,000,000 5,000,000 5,000,000                            366,000                     221,000 13,900,000 23,536,000   
        outstanding—24,295 shares and 23,970 shares, respectively
                              242,000                                                        
        authorized—500,000 shares
                                                                                      
        outstanding—24,218 shares and 23,970 shares, respectively
                               241,000                                                       
        outstanding—24,190 shares and 23,970 shares, respectively
                                241,000                                                      
        deferred tax assets
                                 28,118,000 24,391,000 23,832,000 23,765,000 27,134,000 23,333,000 22,280,000 21,532,000 21,713,000 22,566,000 21,766,000 21,083,000 23,368,000 19,887,000 21,974,000 23,265,000 22,057,000 22,057,000 21,226,000 20,755,000 21,458,000 20,282,000 19,435,000 18,948,000 24,183,000 24,399,000 30,766,000 37,862,000 40,384,000 39,554,000  48,151,000 46,197,000 34,735,000  44,005,000 39,837,000 35,934,000 37,892,000 43,076,000 36,413,000 37,304,000 43,222,000 41,214,000 32,955,000 29,465,000 29,792,000 44,208,000 66,851,000 65,372,000 31,945,000   
        outstanding—23,970 shares in 2015 and 24,950 shares in 2014
                                 238,000                                                     
        outstanding—24,836 shares and 24,950 shares, respectively
                                  247,000                                                    
        outstanding—24,763 shares and 24,950 shares, respectively
                                   246,000                                                   
        outstanding—24,865 shares and 24,950 shares, respectively
                                    248,000                                                  
        short term borrowings and current portion of long-term obligations
                                      836,000                                                
        outstanding—24,950 shares in 2014 and 24,464 shares in 2013
                                     248,000                                                 
        outstanding—24,942 shares and 24,464 shares, respectively
                                      248,000                                                
        outstanding—24,870 shares and 24,464 shares, respectively
                                       248,000                                               
        outstanding—24,839 shares and 24,464 shares, respectively
                                        248,000                                              
        outstanding—24,464 shares in 2013 and 23,746 shares in 2012
                                         244,000                                             
        outstanding—24,432 shares and 23,746 shares, respectively
                                          243,000                                            
        outstanding—24,319 shares and 23,746 shares, respectively
                                           242,000                                           
        outstanding—24,041 shares and 23,746 shares, respectively
                                            240,000                                          
        outstanding—23,746 shares in 2012 and 23,722 shares in 2011
                                             237,000                                         
        outstanding—23,683 shares and 23,722 shares, respectively
                                              236,000                                        
        outstanding—23,668 shares and 23,722 shares, respectively
                                               236,000                                       
        outstanding—23,531 shares and 23,722 shares, respectively
                                                234,000                                      
        outstanding—23,722 shares in 2011 and 24,554 shares in 2010
                                                 236,000 236,000                                    
        outstanding—24,976 shares and 24,554 shares, respectively
                                                   249,000                                   
        outstanding—25,062 shares and 24,554 shares, respectively
                                                    250,000                                  
        outstanding—25,200 shares and 24,554 shares, respectively
                                                     251,000                                 
        outstanding—24,836 shares and 24,455 shares, respectively
                                                      248,000                                
        outstanding—25,088 shares and 24,455 shares, respectively
                                                       250,000                               
        outstanding—24,644 shares and 24,455 shares, respectively
                                                        246,000                              
        outstanding—24,454 shares and 24,191 shares, respectively
                                                         244,000                             
        outstanding—24,388 shares and 24,191 shares, respectively
                                                          243,000                            
        outstanding—24,352 shares and 24,191 shares, respectively
                                                           242,000                           
        outstanding—23,676 shares and 31,552 shares, respectively
                                                            235,000                          
        outstanding—23,630 shares and 31,552 shares, respectively
                                                             234,000                         
        outstanding—31,546 shares and 31,552 shares, respectively
                                                              313,000                        
        restricted cash, non-current
                                                                1,786,000 1,341,000 3,779,000                    
        convertible subordinated notes
                                                                199,790,000 199,776,000 199,762,000  199,733,000 199,719,000                 
        restricted cash, current
                                                                2,460,000 2,460,000                     
        outstanding—31,553 shares and 31,412 shares, respectively
                                                                313,000                      
        notes receivable from stock sales
                                                                                      
        outstanding—31,564 shares and 31,412 shares, respectively
                                                                 313,000 313,000                    
        restricted cash and cash equivalents
                                                                     15,469,000 15,463,000          55,167,000      
        outstanding—31,232 shares and 31,173 shares, respectively
                                                                    310,000                  
        outstanding—30,720 shares and 31,173 shares, respectively
                                                                     305,000                 
        authorized—500,000 shares outstanding—31,043 shares and 31,173 shares, respectively
                                                                      308,000                
        restricted cash, cash equivalents and short-term investments
                                                                       15,467,000 15,466,000 15,411,000 15,336,000 15,343,000 15,324,000 15,282,000 15,224,000 15,284,000       
        minority interest in subsidiaries
                                                                          5,222,000 5,402,000 7,015,000 6,772,000 6,043,000 7,475,000 47,506,000 48,984,000 49,336,000 49,554,000   
        outstanding—31,173 shares in 2005 and 30,392 shares in 2004
                                                                       309,000               
        deferred stock compensation
                                                                                      
        stockholder’s equity:
                                                                                      
        authorized—500,000 shares outstanding—31,103 shares and 30,392 shares, respectively
                                                                        308,000              
        authorized—500,000 shares outstanding—30,766 shares and 30,392 shares, respectively
                                                                         306,000             
        outstanding—30,570 shares and 30,392 shares, respectively
                                                                          304,000            
        outstanding—30,392 shares in 2004 and 29,939 shares in 2003
                                                                           302,000           
        authorized—500,000 shares outstanding—30,317 shares and 29,939 shares, respectively
                                                                            301,000          
        outstanding—30,177 shares and 29,939 shares, respectively
                                                                             300,000         
        accounts receivable-net of allowances of 4,588 and 4,151, respectively
                                                                              74,229,000        
        authorized—500,000 shares outstanding—30,059 shares and 29,939 shares, respectively
                                                                              301,000        
        outstanding—29,939 shares in 2003 and 29,042 shares in 2002
                                                                               298,000       
        accumulated depreciation and amortization
                                                                                      
        property and equipment—net
                                                                                158,542,000 155,848,000 153,991,000    
        purchased intangibles
                                                                                 28,213,000     
        authorized—500,000 shares outstanding—29,290 shares and 29,042 shares, respectively
                                                                                 291,000     
        goodwill—net of accumulated amortization of 10,644
                                                                                  34,775,000    
        authorized—500,000 shares outstanding—29,241 shares and 29,042 shares, respectively
                                                                                  291,000    
        property and equipment-net
                                                                                   174,191,000   
        goodwill—net of accumulated amortization of 10,897
                                                                                   31,830,000   
        goodwill—net of accumulated amortization of 13,655 in 2001 and 11,821 in 2000
                                                                                      
        net non-current assets of discontinued operations
                                                                                      
        goodwill—net of accumulated amortization of 13,044 in 2001 and 11,821 in 2000
                                                                                      
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2022-04-02 2022-01-01 2021-10-02 2021-07-03 2021-04-03 2021-01-02 2020-10-03 2020-07-04 2020-04-04 2019-12-28 2019-09-28 2019-06-29 2019-03-30 2018-12-29 2018-09-29 2018-06-30 2018-03-31 2017-12-30 2017-09-28 2017-07-01 2017-04-01 2016-12-31 2016-10-01 2016-07-02 2016-04-02 2016-01-02 2015-10-03 2015-07-04 2015-04-04 2014-12-27 2014-09-27 2014-06-28 2014-03-29 2013-12-28 2013-09-28 2013-06-29 2013-03-30 2012-12-29 2012-09-29 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-07-02 2011-04-02 2011-01-01 2010-07-03 2010-04-03 2010-01-02 2009-07-04 2009-04-04 2008-12-27 2008-06-28 2008-03-29 2007-12-29 2007-06-30 2007-03-31 2006-12-30 2006-07-01 2006-04-01 2005-12-31 2005-09-30 2005-07-02 2005-04-02 2005-01-01 2004-09-30 2004-07-03 2004-04-03 2003-12-27 2003-09-30 2003-06-28 2003-03-29 2002-12-28 2001-12-29 2001-02-25 
                                                                                   
          cash flows from operating activities:
                                                                                   
          net income
        33,676,000 30,265,000    144,000 7,689,000 -8,708,000 -418,913,000 5,793,000 624,000 -3,099,000 20,750,000 35,550,000 73,185,000 66,970,000 65,302,000 41,901,000 73,752,000 61,117,000 41,845,000 30,408,000 30,785,000 18,650,000 17,781,000 20,286,000 27,302,000 13,264,000 18,413,000 17,430,000 19,097,000 12,999,000 15,307,000 11,703,000 20,515,000 16,685,000 15,002,000 14,153,000 12,548,000 17,208,000 16,155,000 17,051,000 31,380,000 19,022,000 23,723,000 19,113,000 14,404,000 8,480,000 4,179,000 -7,015,000 -9,130,000 -14,679,000 8,402,000 6,125,000 4,729,000 -763,000 7,282,000 10,758,000 10,851,000 8,173,000 9,316,000    5,391,000    -306,000   1,927,000 -20,483,000   
          adjustments to reconcile net income to net cash from operating activities:
                                                                                   
          depreciation and amortization
        11,763,000 11,026,000 11,424,000 11,224,000 10,984,000 10,606,000 10,448,000 10,325,000 12,776,000 13,156,000 13,463,000 13,772,000 13,774,000 13,916,000 14,607,000 13,336,000 12,844,000 12,555,000 12,113,000 11,618,000 10,963,000 8,995,000 6,495,000 6,527,000 6,498,000 6,385,000 6,362,000 6,017,000 6,226,000 6,210,000 6,602,000 6,482,000 6,825,000 6,699,000 6,970,000 6,599,000 6,679,000 6,108,000 6,064,000 5,673,000 5,678,000 5,828,000 5,686,000 5,136,000 4,950,000 4,767,000 5,032,000 5,923,000 5,752,000 4,652,000 4,987,000 4,729,000 5,436,000 6,260,000 5,981,000 6,529,000 6,476,000 6,220,000 6,593,000 6,696,000 6,485,000 6,831,000 7,035,000 7,103,000 7,310,000  7,295,000 8,447,000 6,859,000 7,871,000 7,174,000 7,020,000 6,937,000 5,480,000  
          amortization of intangible assets
        830,000 1,383,000 2,559,000 3,109,000 2,451,000 2,614,000 2,962,000 2,947,000 11,907,000 12,312,000 13,735,000 18,626,000 14,032,000 15,067,000 14,401,000 15,209,000 15,329,000 15,100,000 16,253,000 15,452,000 16,763,000 12,088,000 2,249,000 2,032,000 2,077,000 2,092,000 2,068,000 1,960,000 2,036,000 2,180,000 2,312,000 2,402,000 2,434,000 2,445,000 2,454,000 2,724,000 3,408,000 1,181,000 1,436,000 1,723,000 1,611,000 1,636,000 1,879,000 1,851,000 2,257,000 2,095,000 2,041,000 1,956,000 1,961,000 1,907,000 1,894,000 1,943,000 2,165,000 2,229,000 2,206,000 2,085,000 1,950,000 1,943,000 2,205,000 2,335,000 2,306,000               
          deferred income taxes
        4,456,000 -4,070,000 -5,268,000 -1,734,000 -56,207,000 12,615,000 -2,674,000 2,814,000 -22,700,000 -1,911,000 -6,721,000 -3,756,000 -2,948,000 -1,505,000 -1,773,000 4,301,000 958,000 13,121,000 -21,716,000 7,584,000 -6,911,000 1,291,000 -6,414,000 2,297,000 -2,161,000 -3,492,000 -4,474,000 -1,171,000 -505,000 6,988,000 -5,070,000 -1,037,000 -457,000 -1,621,000 -882,000 2,475,000 -2,425,000 -275,000 -2,668,000 -2,186,000 618,000 -527,000 4,840,000 9,070,000 83,000 8,096,000 2,545,000 4,456,000 6,921,000           -2,188,000 2,760,000    3,393,000  -5,534,000 5,954,000 2,012,000 -10,483,000      
          amortization of debt issuance cost
        676,000 748,000 868,000 870,000 884,000 857,000 870,000 807,000 818,000 826,000 837,000 1,248,000 1,274,000 1,288,000 1,314,000 1,030,000 3,406,000 3,815,000 4,232,000 1,263,000 1,107,000 600,000                                                      
          loss on sale of assets
                                                                                   
          stock-based compensation
        9,043,000 31,907,000 9,980,000 10,148,000 9,092,000 12,185,000 13,711,000 14,386,000 8,898,000 7,792,000 9,931,000 9,655,000 9,004,000 7,876,000 8,669,000 8,583,000 8,410,000 7,076,000 7,194,000 6,892,000 6,683,000 5,503,000 5,336,000 5,689,000 5,387,000 3,745,000 4,495,000 4,565,000 4,782,000 4,390,000 4,690,000 4,667,000 4,672,000 4,868,000 4,615,000 4,640,000 4,642,000 4,994,000 4,005,000 4,127,000 4,161,000 4,022,000 3,442,000 3,437,000 3,162,000 2,922,000 2,191,000 2,018,000 1,874,000 1,488,000 2,425,000 1,753,000 1,605,000 3,051,000 2,260,000 1,940,000 3,499,000 3,491,000 3,411,000 3,688,000 3,047,000               
          non-cash restructuring charges
        -13,000 -14,000 1,252,000 318,000 558,000 3,509,000 126,000 554,000 915,000 599,000 488,000 11,798,000 247,000 76,000 282,000 525,000 9,000 430,000 2,044,000 82,000 -46,000 4,359,000                                                      
          amortization of right of use assets
        3,675,000 3,813,000 5,744,000 4,567,000 4,452,000 4,427,000                                                                      
          other non-cash expense
        1,988,000 939,000 -434,000 1,295,000 -25,000 219,000 -4,218,000 -757,000 2,175,000 229,000 2,919,000 -1,274,000 -1,225,000 1,000 365,000 102,000 -285,000 377,000 1,242,000    576,000 399,000 -177,000 165,000                        46,000 30,000 4,000 142,000   1,606,000 179,000 70,000                  
          changes in assets and liabilities, net of effect of acquisitions:
                                                                                   
          accounts receivable
        -22,299,000 4,328,000 4,522,000 -5,414,000 -27,416,000 -359,000 -18,619,000 7,969,000 29,434,000 34,320,000 -3,012,000 44,530,000 16,925,000 23,635,000 -19,500,000 -33,305,000 7,004,000 -1,219,000 -28,997,000 -20,721,000 -7,215,000 4,417,000 -13,330,000 1,138,000 -1,687,000 -3,646,000 5,538,000 -22,078,000 3,681,000 2,760,000 -10,940,000 7,323,000 -21,328,000 19,754,000 11,207,000 -12,894,000 -13,539,000 19,452,000 -1,336,000 -15,496,000 2,525,000 9,161,000 1,387,000   1,522,000    8,579,000 10,121,000 2,892,000   6,205,000 7,207,000 -11,427,000 17,435,000   2,330,000 -6,500,000 9,854,000 -5,529,000 14,042,000           
          inventories
        -30,212,000 -6,626,000 978,000 -2,082,000 11,527,000 18,570,000 28,628,000 19,162,000 -18,459,000 -867,000 16,086,000 4,368,000 6,852,000 -9,501,000 6,744,000 -25,189,000 -43,550,000 -16,128,000 -15,486,000 -895,000 -1,651,000 6,613,000 -12,081,000 -22,564,000 -17,350,000 -3,713,000 4,043,000 -4,103,000 1,399,000 4,715,000 3,372,000 -3,120,000 -4,845,000 -2,297,000 4,336,000 -1,159,000 -1,030,000 2,113,000 1,954,000 -6,760,000 -7,632,000 2,671,000 -7,810,000     1,114,000 1,207,000 7,416,000    1,217,000 667,000  -1,465,000 1,531,000  3,591,000 3,953,000               
          prepaid expenses and other assets
        -2,419,000 -10,655,000 1,915,000 -1,953,000 -6,062,000 -3,577,000 -2,005,000 7,662,000 -4,870,000 -3,418,000 5,747,000 -1,665,000 8,793,000 1,199,000 1,017,000 -2,519,000 1,171,000 -6,364,000 -465,000 -268,000 -75,000 -3,559,000 -46,000 48,000 -1,306,000 -3,551,000 19,145,000 -7,272,000 -5,271,000 -8,650,000 23,533,000 -3,759,000 1,117,000 -9,256,000 20,064,000 282,000 -5,937,000 -4,281,000 15,887,000 -11,102,000 -2,758,000 -7,321,000 15,278,000                  1,883,000    1,947,000           
          other long-term assets
        11,780,000 -2,723,000 -2,547,000 -3,022,000 9,575,000 -2,071,000 -4,124,000 -740,000 5,602,000 -3,471,000 -2,210,000 -639,000 -32,000 2,332,000 -2,323,000 -1,616,000 -388,000 -3,365,000 557,000 -1,027,000 -1,209,000 -1,083,000                                                      
          accounts payable
        8,221,000 -4,079,000 -1,947,000 13,590,000 31,768,000 -912,000 -6,529,000 4,827,000 9,100,000 789,000 -9,942,000 -4,416,000 -5,538,000 4,736,000 -13,220,000 -10,103,000 8,911,000 4,676,000 1,741,000 -2,137,000 7,233,000 1,439,000 -89,000 2,308,000 11,768,000 -4,252,000 359,000 84,000 5,915,000 -5,358,000 1,560,000 -1,785,000 3,588,000 -5,658,000 -4,371,000 490,000 10,442,000 -445,000 -9,343,000 214,000 3,401,000 -4,715,000 -4,991,000 -242,000 2,385,000 2,687,000 3,844,000 3,331,000 1,752,000    -2,994,000   -1,352,000   6,154,000 3,010,000 2,750,000    1,969,000           
          income taxes payable/receivable
        6,315,000 -1,805,000 10,750,000 2,180,000 6,329,000 13,306,000 8,618,000 -7,519,000 -23,676,000 -2,447,000 -4,516,000 -86,221,000 -7,350,000 -21,842,000 -9,246,000 -11,095,000 -8,936,000 29,751,000 38,501,000 15,465,000 14,282,000 -1,428,000 10,143,000 -8,738,000 1,404,000 4,575,000 5,041,000 -1,929,000 -2,594,000 -7,277,000 2,435,000 -9,334,000 -113,000 -4,361,000 3,226,000 -23,703,000 313,000 -410,000 9,349,000 3,616,000 -11,677,000 -8,210,000 -6,748,000 4,714,000         7,127,000 534,000 1,230,000 5,238,000                    
          operating lease liabilities
        -3,699,000 -3,935,000 -6,213,000 -3,973,000 -4,760,000 -4,090,000 -3,622,000 -3,953,000 -4,512,000 -3,877,000                                                                  
          other current liabilities
        8,640,000 -36,447,000 8,018,000 7,771,000 31,889,000 6,766,000 4,209,000 -5,289,000 7,951,000 -7,856,000 3,582,000 3,934,000 14,000 -20,685,000 26,814,000 -28,059,000 -2,239,000 -39,336,000 7,609,000 -7,197,000 29,135,000 17,911,000 26,142,000 698,000 8,949,000 -5,128,000 -13,554,000 -2,717,000 14,749,000 7,145,000 -20,524,000 5,614,000 9,080,000 5,250,000 -20,087,000 -91,000 4,937,000 4,056,000 -17,597,000 10,758,000 4,589,000 -3,110,000 -12,394,000 248,000 19,608,000 1,250,000 17,328,000 12,444,000 7,409,000    9,739,000 2,249,000 2,536,000 6,248,000                    
          other long-term liabilities
        -14,341,000 -1,974,000 1,638,000 4,248,000 -10,074,000 122,000 5,352,000 5,759,000 -5,736,000 3,968,000 13,957,000 2,180,000 440,000 -832,000 36,000 2,024,000 -125,000 2,588,000 -2,415,000 3,678,000 721,000 1,330,000 1,887,000 3,144,000 -2,922,000 1,843,000 -1,376,000 1,412,000 -732,000 816,000 1,178,000 1,028,000 -600,000 3,301,000 277,000 1,577,000 -773,000 821,000 1,526,000 -728,000 -767,000 676,000 -1,618,000 1,752,000 -22,000 2,431,000   1,196,000      1,356,000 2,595,000 -405,000 2,307,000    2,246,000 1,628,000             
          net cash from operating activities
        26,728,000 12,081,000 69,853,000 71,404,000 -143,250,000 74,931,000 46,843,000 54,292,000 45,731,000 60,041,000 46,037,000 9,041,000 75,012,000 51,311,000 103,118,000 194,000 67,819,000 64,980,000 98,834,000 90,923,000 111,718,000 82,641,000 50,678,000 9,067,000 31,292,000 14,262,000 55,623,000 -11,579,000 49,363,000 31,051,000 26,482,000 20,479,000 15,741,000 28,677,000 48,763,000 -3,665,000 23,101,000 47,323,000 21,060,000 10,965,000 16,611,000 16,135,000 32,442,000 18,390,000 5,875,000 29,969,000 22,160,000 28,579,000 17,600,000 11,021,000   14,946,000 15,564,000 13,077,000 9,913,000 11,202,000 28,734,000 17,503,000 12,808,000 20,522,000    29,640,000    25,358,000    203,000   
          cash flows from investing activities:
                                                                                   
          purchases of property and equipment
        -18,118,000 -16,884,000 -22,067,000 -23,451,000 -21,972,000 -15,073,000 -16,483,000 -13,037,000 -23,903,000 -11,496,000 -22,772,000 -18,986,000 -18,388,000 -23,137,000 -24,767,000 -21,039,000 -21,268,000 -23,683,000 -18,422,000 -15,809,000 -14,153,000 -15,390,000 -21,017,000 -12,054,000 -11,491,000 -4,765,000 -5,976,000 -3,977,000 -7,072,000 -5,138,000 -5,528,000 -3,867,000 -7,203,000 -6,792,000 -6,622,000 -4,874,000 -6,591,000 -3,901,000 -5,438,000 -11,038,000 -11,436,000 -8,139,000 -9,669,000                                 
          proceeds from dispositions of property and equipment
        3,120,000 70,000 439,000 819,000 256,000 1,695,000 21,258,000 -208,000 181,000 695,000 66,000 897,000   1,667,000 2,648,000 64,000 26,000 951,000 858,000 21,000 123,000 133,000 242,000 130,000 50,000 -685,000 874,000 406,000 568,000 168,000 -83,000 318,000 182,000 1,351,000 37,000      26,000 17,000 305,000   509,000 -234,000 478,000 254,000 523,000 826,000 2,199,000 29,000 9,824,000 36,000 24,000 143,000 985,000 162,000 20,000         10,846,000 983,000 77,000 826,000   
          proceeds from sales and maturities of available-for-sale securities
          15,030,000 60,000   41,928,000 115,000 5,000 120,000 1,995,000 9,464,000 -28,000 121,000 -1,000 58,590,000 18,486,000 9,711,000 105,000 5,000 25,108,000 188,092,000 65,496,000 28,216,000 51,254,000 76,015,000 94,608,000 98,066,000 77,370,000 46,145,000 60,939,000 34,741,000 51,605,000 38,709,000 43,247,000 34,879,000 128,526,000 25,924,000 43,906,000 40,682,000 30,188,000 73,028,000 74,233,000 28,803,000 19,506,000 43,863,000 30,780,000 22,506,000 24,930,000 21,322,000 4,112,000 -411,785,000 431,120,000 130,266,000 212,261,000 104,664,000 176,506,000 101,987,000 94,768,000 80,778,000 57,750,000 116,925,000 84,918,000 80,875,000  103,678,000 51,182,000 95,440,000       
          net cash from investing activities
        -14,998,000 -16,814,000 -6,598,000 -51,382,000 -1,495,000 -13,378,000 11,362,000 -55,027,000 -23,838,000 -10,681,000 -20,711,000 -8,744,000 -20,518,000 -50,320,000 -23,220,000 24,964,000 -65,640,000 -3,840,000 -49,921,000 -15,279,000 -14,295,000 -730,793,000 167,208,000 -42,529,000 -17,623,000 -3,612,000 22,294,000 -5,623,000 -42,524,000 29,020,000 -78,443,000 -14,291,000 -14,820,000 -2,229,000 -24,487,000 -15,009,000 -24,875,000 -6,294,000 -38,565,000 -9,175,000 -104,686,000 9,482,000 5,564,000          5,904,000      44,992,000                 
          cash flows from financing activities:
                                                                                   
          repayments of short-term borrowings
        -444,000 -10,452,000 -463,000 -472,000 -471,000 -468,000 -464,000 -442,000 -1,330,000 -12,238,000 -43,074,000 -20,485,000 -21,759,000 -26,476,000 -25,033,000 -28,763,000 -36,333,000 -622,000 -1,579,000 -540,000 -4,780,000 -23,920,000 -5,000,000 -17,632,000 -12,160,000 -14,375,000 -4,869,000 -7,943,000 -11,542,000 -16,408,000 -8,323,000 -15,614,000 -21,154,000 -11,177,000 -6,341,000                                      
          repayments of long-term borrowings
        -1,863,000 -1,933,000 -2,038,000 -2,304,000 -2,117,000 -2,104,000 -2,055,000 -1,981,000 -1,928,000 -1,956,000 -1,851,000 -1,884,000 -1,895,000 -1,907,000 -2,307,000 -2,373,000 -76,550,000 -90,363,000 -90,754,000 -52,477,000 -34,178,000 -2,171,000                                                      
          issuance of common stock under employee stock purchase plans
        6,566,000                                                                          
          net settlement of restricted common stock
        -1,429,000 -37,935,000 -281,000 -830,000 -348,000 -8,903,000 -30,000 -220,000 -124,000 -13,175,000 -12,000 -26,000 -298,000 -14,843,000 -28,000 -42,000 -604,000 -35,646,000 -27,000 -15,000 -420,000 -15,255,000 -29,000 -70,000 -27,000 -5,317,000 -7,000 -60,000 -35,000 -5,200,000 -18,000 -104,000 -31,000 -7,658,000 -7,000 -117,000 -4,046,000 -23,000 -83,000 -18,000 -4,413,000 -27,000                                 
          net cash from financing activities
        -3,736,000 -43,754,000  31,866,000 -2,936,000 -5,579,000 -2,548,000 3,897,000 -1,757,000 -9,478,000 -32,397,000 -23,662,000 -29,557,000 5,101,000 -3,091,000 -97,360,000 -79,169,000 -119,378,000 -89,471,000 -48,590,000 -37,252,000 681,301,000 -2,981,000 18,980,000 -1,999,000 3,204,000 -49,973,000 3,495,000 -7,482,000 -19,061,000   197,000 -850,000 822,000 3,280,000 7,590,000 -23,378,000 273,000 -482,000 4,043,000 -18,833,000 -55,698,000   16,918,000 -10,828,000 10,496,000 2,408,000 754,000 489,000 3,079,000      1,986,000 1,357,000      1,017,000   4,978,000 1,521,000     5,246,000  
          effect of exchange rate changes on cash, cash equivalents and restricted cash
        -7,788,000 -3,765,000 -8,196,000 -735,000 -6,904,000 12,182,000 5,649,000 6,756,000 -8,418,000 4,035,000 -4,037,000 2,661,000 -2,802,000 -1,799,000 960,000 -5,083,000 761,000 943,000 11,754,000 12,787,000 11,887,000 -13,504,000                                                      
          net decrease in cash, cash equivalents and restricted cash
                                                                                   
          cash, cash equivalents and restricted cash, beginning of period
        462,521,000  445,520,000  318,661,000  324,045,000  457,087,000  354,347,000                                                      
          cash, cash equivalents and restricted cash, end of period
        206,000 410,269,000  51,153,000 -154,585,000 513,676,000  9,918,000 11,718,000 362,578,000  -20,704,000 22,135,000 328,338,000  -77,285,000 -76,229,000 399,792,000  39,841,000 72,058,000 373,992,000                                                      
          non-cash investing and financing activities:
                                                                                   
          unpaid property and equipment purchases
        -1,723,000 5,136,000 -1,569,000 1,083,000 -2,291,000 6,914,000 -2,930,000 46,000 -1,990,000 7,770,000 -579,000 -366,000 -731,000 6,082,000 823,000 1,991,000 -491,000 3,853,000 1,247,000 -772,000 -1,362,000 4,084,000 954,000 -1,262,000 2,301,000 1,499,000 484,000 113,000                                                
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                   
          net increase in cash, cash equivalents and restricted cash
         -52,252,000 52,277,000 51,153,000 -154,585,000 68,156,000 61,306,000 9,918,000 11,718,000 43,917,000 -11,108,000 -20,704,000 22,135,000 4,293,000 77,767,000 -77,285,000 -76,229,000 -57,295,000 -28,804,000 39,841,000 72,058,000 19,645,000                                                      
          impairment of goodwill
                                                       19,286,000                        
          impairment of long-lived assets
                                                                                 
          impairment of investment
                                                                                
          non-cash loss on or laser dissolution
                                                                                   
          non-cash pension impact
                                                                                   
          purchases of available-for-sale securities
              -35,341,000 -41,897,000   -119,000 -6,433,000 -5,000,000 -119,000 -21,485,000 -17,944,000 -14,894,000     -96,213,000 -34,478,000 -50,151,000 -37,760,000 -97,128,000 -133,924,000 -43,780,000 -119,228,000 -71,280,000 -42,676,000 -47,224,000 -57,925,000 -53,419,000 -53,257,000 -63,630,000 -55,644,000 -42,043,000 -133,906,000 -12,593,000 -58,273,000                                 
          acquisition of businesses, net of cash acquired
                 -18,881,000   -740,481,000             -67,289,000     481,000                                 
          investment at cost
                  -3,423,000                                                              
          short-term borrowings
              551,000 12,144,000 12,540,000 18,630,000 20,300,000 68,124,000 24,277,000 28,143,000 34,318,000 2,354,000 1,261,000 672,000 3,010,000 3,920,000 20,000,000 17,632,000 17,160,000 14,375,000 4,869,000 7,943,000 11,542,000 15,596,000 9,159,000 15,614,000 21,154,000 11,177,000 6,341,000   4,476,000 4,786,000 793,000 687,000 579,000 285,000    4,000                    1,000 34,000 676,000 3,963,000  
          long-term borrowings
                                                                                  
          issuance of common stock under employee stock option and purchase plans
          6,587,000 5,896,000 1,000 6,540,000 1,074,000 5,747,000 6,107,000 5,704,000 5,675,000 4,899,000 4,245,000 3,866,000 600,000 3,563,000 165,000 3,521,000 52,000 3,555,000 264,000 3,437,000 172,000 3,475,000 228,000 6,810,000 833,000 3,402,000 7,594,000 4,712,000 1,751,000 3,817,000 3,152,000 4,568,000 2,288,000 6,463,000 8,638,000 17,331,000 5,806,000 10,777,000 2,833,000 1,130,000 1,000 3,543,000 1,535,000     3,784,000                  
          repurchase of common stock
                  -26,004,000 -25,905,000 -25,501,000            -50,018,000 -7,711,000 -17,298,000         -4,334,000 -20,665,000 -58,699,000                                 
          net cash provided (used in) financing activities
                                                                                   
          cash, cash equivalents and restricted cash, beginning of year
                                                                                   
          cash, cash equivalents and restricted cash, end of year
                                                                                   
          supplemental disclosure of cash flow information:
                                                                                   
          cash paid during the year for:
                                                                                   
          interest
                                          104,000 37,000 11,000 12,000 15,000 64,000 4,000 3,000 51,000 44,000 2,000 11,000 152,000 16,000 38,000 42,000 29,000 75,000 367,000 94,000 98,000     113,000 546,000   39,000 1,104,000  1,555,000 149,000 1,494,000       
          income taxes
                                          10,577,000 30,993,000 6,327,000 6,150,000 4,333,000 2,635,000 16,969,000 25,818,000 1,085,000 4,775,000 7,458,000 3,973,000 3,725,000 2,259,000 3,279,000 4,804,000 2,586,000 10,443,000 4,183,000 5,129,000 5,145,000     4,729,000 2,162,000   659,000 2,481,000  2,536,000 1,282,000 3,184,000       
          cash received during the year for:
                                                                                   
          noncash investing and financing activities:
                                                                                   
          net loss
           30,262,000                                                                        
          proceeds from sale of discontinued operation
                      25,000,000                                                          
          proceeds from sale of other entities
                                                                                  
          other
                                                                357,000 39,000 63,000  727,000 -25,000 684,000  1,271,000 347,000 170,000  -370,000 -72,000 523,000   
          amortization of operating right of use assets
               4,046,000 3,996,000 4,104,000                                                                  
          gain on business combination
                          -5,416,000                                                      
          impairment and other charges
                                                                                   
          excess tax benefits from stock-based compensation arrangements
                                              -1,451,000 122,000 912,000 1,681,000 743,000 1,121,000 1,569,000 1,678,000 137,000 382,000 100,000 2,000 8,000      77,000                  
          cash flows from discontinued operations
                         2,000 -3,973,000 383,000 -18,000 -1,283,000                                                      
          coherent, inc. and subsidiariesconsolidated statements of cash flows
                                                                                   
          proceeds from long-term borrowings
                          740,685,000                                                      
          cash paid to subsidiaries' minority shareholders
                                                                                 
          debt issuance costs
                          -475,000 -68,000 -25,824,000 -2,672,000 -393,000                                                    
          use of previously owned equity shares in acquisition
                          20,685,000                                                      
          non-cash pension benefit
                                                                                   
          cash paid to subsidiaries’ minority shareholders
                                                                                   
          impairment of assets held for sale
                                                                                   
          increase in cash overdraft
                                                                                   
          other non-cash expenses
                            111,000 456,000                                                      
          other assets
                              -975,000 -2,561,000 3,031,000 -1,047,000 1,472,000 -1,252,000 1,240,000 -658,000 -775,000 -647,000 51,000 -2,118,000 569,000 -1,473,000 1,604,000 -666,000 -1,363,000 856,000 1,151,000 -497,000 2,911,000       -2,284,000 3,323,000 6,722,000 -1,153,000                       
          net change in capital lease obligations
                                         -2,000    -4,000  -4,000 -3,000 -4,000                                  
          effect of exchange rate changes on cash and cash equivalents
                              35,000 -3,287,000 3,163,000 -2,118,000 -475,000 1,764,000 -13,696,000 -2,807,000 -5,732,000 -1,078,000 758,000 2,333,000 4,035,000 3,101,000 -208,000 2,584,000 2,413,000 -4,792,000 2,434,000 -6,183,000 -14,928,000 -4,410,000         428,000 12,761,000 1,128,000   3,482,000 3,859,000 1,803,000 1,397,000   -1,996,000 2,151,000  -313,000 -277,000 2,283,000 54,000 2,198,000 2,332,000 2,279,000   
          net increase in cash and cash equivalents
                              214,940,000 -17,769,000 14,833,000 11,736,000 27,469,000 -11,943,000 -14,339,000 38,203,000 -58,351,000 9,317,000 1,876,000 27,931,000 29,133,000 -12,293,000 5,608,000 20,235,000    601,000 -32,620,000            4,868,000    67,711,000 245,034,000 10,753,000   -6,247,000 17,590,000  6,398,000 -4,973,000 11,502,000     4,759,000  
          cash and cash equivalents, beginning of year
                                                                                   
          cash and cash equivalents, end of year
                                                                                   
          cash and cash equivalents, beginning of period
                               130,607,000  91,217,000  110,444,000  67,761,000  167,061,000  245,380,000 199,950,000 213,826,000 315,927,000   445,231,000 97,507,000   87,659,000  76,541,000  131,018,000 77,409,000  
          cash and cash equivalents, end of period
                               -17,769,000 14,833,000 142,343,000  -11,943,000 -14,339,000 129,420,000  9,317,000 1,876,000 138,375,000  -12,293,000 5,608,000 87,996,000  -3,484,000 -81,598,000 167,662,000  -436,000 -27,398,000 227,515,000 18,185,000 -7,594,000 199,760,000 -620,000 -2,284,000 185,235,000 24,347,000 -151,011,000 320,795,000   434,826,000 67,711,000 245,034,000 108,260,000   -6,247,000 105,249,000  6,398,000 -4,973,000 88,043,000  -8,036,000 -19,337,000 112,002,000 82,168,000  
          cash dividend paid
                                                                                   
          other non-cash income
                                   -376,000 24,000 360,000 -988,000 -354,000 10,000 -32,000 -130,000 183,000 -222,000 522,000 -567,000 252,000 -266,000 154,000                                  
          write-off of hypertronics intangibles
                                                                                   
          excess tax benefit from stock-based compensation arrangements
                                              1,451,000 -122,000 -912,000 -1,681,000 -743,000                                 
          repayments of capital lease obligations
                                                                                   
          capital lease repayments
                                          -5,000                                        
          cash dividend paid on common stock
                                           -24,040,000                                      
          net cash provided by/(used in) financing activities
                                                                                   
          non-cash translation adjustment related to finland dissolution
                                                                                   
          change in restricted cash
                                                         2,521,000                        
          loss on disposal of property and equipment
                                              -337,000 360,000 170,000 42,000 61,000 -328,000 411,000 156,000 118,000 233,000 100,000                           
          cash paid during the period for:
                                                                                   
          cash received during the period for:
                                                                                   
          unpaid property and equipment
                                           797,000 53,000 1,000,000  -2,166,000 1,844,000 1,933,000  -1,846,000 1,939,000 889,000 -176,000 306,000 654,000 -310,000 -62,000 1,554,000 -410,000 1,551,000 872,000                     
          investment in sionyx
                                                                                   
          other-net
                                                                                   
          assets acquired under capital leases
                                                                                   
          tax benefit from employee stock options
                                               2,572,000 564,000 955,000 -6,000 48,000 -1,295,000 1,543,000                390,000              
          changes in restricted cash
                                                                                   
          net decrease in cash and cash equivalents
                                               -3,484,000                                    
          repayments of short-term borrowing
                                                 -4,786,000                                  
          non-cash gain on finland dissolution
                                                                                   
          short-term repayments
                                                                                   
          cash overdrafts decrease
                                                                                   
          adjustments to reconcile net income to net cash provided by operating activities:
                                                                                   
          acquisition of businesses
                                                                                   
          non-cash restructuring and other charges
                                                      146,000 904,000 230,000                           
          repayment of capital lease obligations
                                                                                   
          acquisition of a business
                                                                                   
          gain on disposal of property and equipment
                                                         58,000 283,000 155,000                        
          non-cash restructuring and other
                                                         209,000                          
          proceeds from sale of business
                                                            6,519,000                     
          other—net
                                                            -518,000 75,000 729,000   196,000                1,340,000  
          cash overdrafts increase
                                                                    831,000      216,000      786,000   
          retirement of restricted common stock
                                                                                   
          net retirement of restricted stock awards
                                                         327,000 370,000 24,000                        
          purchased in-process research and development
                                                                  690,000              
          (gain) loss on disposal of property and equipment
                                                                                   
          amortization of bond issue costs
                                                               291,000 291,000 292,000                  
          premiums paid for life insurance contracts
                                                                                   
          long-term debt repayments
                                                                                   
          collection of notes receivable from common stock
                                                                                   
          portion of deferred business acquisition costs included in other current liabilities
                                                                                   
          unrealized loss on equity securities
                                                                                   
          deferred business acquisition costs
                                                                                   
          other — net
                                                                                   
          long-term debt borrowings
                                                                            3,000 23,000 49,000 288,000 8,000  
          repayment of capital lease obligation
                                                                                   
          collection of notes receivable from stock sales
                                                                     365,000 34,000 35,000     348,000 718,000 186,000 66,000  
          proceeds received from issuance of convertible subordinated notes
                                                                                  
          other – net
                                                                                   
          excess tax benefits from stock-based payment arrangements
                                                                  263,000 -157,000 172,000               
          changes in operating assets and liabilities, net of acquisitions:
                                                                                   
          income taxes payable
                                                                      -26,000             
          decrease in restricted cash and cash equivalents
                                                                                   
          premiums paid on life insurance
                                                                                   
          long-term debt payments
                                                                                   
          sales of shares under employee stock plans
                                                                  12,078,000 3,351,000 3,596,000  5,845,000 3,701,000 3,584,000 870,000 2,482,000 2,124,000 2,317,000  7,432,000 472,000 2,921,000 4,201,000  
          increase in restricted cash and cash equivalents
                                                                    4,000               
          tax benefit from stock option exercises
                                                                   331,000 60,000   733,000 225,000  164,000 417,000 78,000   134,000 200,000   
          non-cash restructuring, impairment and other charges
                                                                        300,000           
          portion of iolon purchase price not yet paid
                                                                    512,000               
          cash flows from continuing operating activities:
                                                                                   
          income from continuing operations
                                                                     5,251,000 9,645,000             
          adjustments to reconcile income from continuing operations to net cash from continuing operating activities:
                                                                                   
          stock based compensation
                                                                     174,000              
          minority interest in subsidiaries’ losses
                                                                                   
          equity in loss of joint ventures
                                                                                   
          gain on sale of joint venture
                                                                                   
          gain on sale of lumenis investment
                                                                                   
          write-down of lumenis investment
                                                                             10,212,000   
          purchases of short-term trading investments
                                                                                   
          proceeds from sales of short-term trading investments
                                                                               93,998,000 84,243,000 26,600,000  
          issuance of common stock under productivity incentive plan
                                                                                   
          dividends paid to minority stockholders
                                                                                   
          net cash from continuing operating activities
                                                                     19,767,000 24,217,000    16,442,000       11,137,000  
          cash flows from continuing investing activities:
                                                                                   
          proceeds from sale of note receivable from picometrix
                                                                                   
          acquisition of businesses and minority interest, net of cash acquired
                                                                                   
          change in restricted cash, cash equivalents and short-term investments
                                                                                   
          premiums paid for life insurance
                                                                                   
          distributions from deferred compensation plan arrangements
                                                                                   
          investment in joint venture
                                                                                   
          proceeds from sale of joint venture
                                                                                   
          net cash from continuing investing activities
                                                                                   
          cash flows from continuing financing activities:
                                                                                   
          net cash from continuing financing activities
                                                                                   
          net cash from discontinued operating activities
                                                                                   
          net issuances of restricted stock awards
                                                                                   
          intangible assets amortization
                                                                      1,674,000 1,528,000 1,493,000  1,504,000 1,770,000 1,929,000       
          changes in operating assets and liabilities:
                                                                                   
          decrease in restricted cash, cash equivalents and short-term investments
                                                                      15,233,000     -8,000 624,000       
          proceeds from dispositions of property and equipment and assets held for sale
                                                                      241,000    1,069,000 700,000 534,000       
          acquisition of businesses and minority interests, net of cash acquired
                                                                                   
          consolidation of picometrix under fin 46r
                                                                                   
          gain on sale of lumenis common stock
                                                                                   
          increase in restricted cash, cash equivalents and short-term investments
                                                                                   
          cash paid during the quarter for:
                                                                                   
          cash received during the quarter for:
                                                                                   
          capital expenditures
        -18,118,000 -16,884,000 -22,067,000 -23,451,000 -21,972,000 -15,073,000 -16,483,000 -13,037,000 -23,903,000 -11,496,000 -22,772,000 -18,986,000 -18,388,000 -23,137,000 -24,767,000 -21,039,000 -21,268,000 -23,683,000 -18,422,000 -15,809,000 -14,153,000 -15,390,000 -21,017,000 -12,054,000 -11,491,000 -4,765,000 -5,976,000 -3,977,000 -7,072,000 -5,138,000 -5,528,000 -3,867,000 -7,203,000 -6,792,000 -6,622,000 -4,874,000 -6,591,000 -3,901,000 -5,438,000 -11,038,000 -11,436,000 -8,139,000 -9,669,000              
          free cash flows
        8,610,000 -4,803,000 47,786,000 47,953,000 -165,222,000 59,858,000 30,360,000 41,255,000 21,828,000 48,545,000 23,265,000 -9,945,000 56,624,000 28,174,000 78,351,000 -20,845,000 46,551,000 41,297,000 80,412,000 75,114,000 97,565,000 67,251,000 29,661,000 -2,987,000 19,801,000 9,497,000 49,647,000 -15,556,000 42,291,000 25,913,000 20,954,000 16,612,000 8,538,000 21,885,000 42,141,000 -8,539,000 16,510,000 43,422,000 15,622,000 -73,000 5,175,000 7,996,000 22,773,000 18,390,000 5,875,000 29,969,000 22,160,000 28,579,000 17,600,000 11,021,000   14,946,000 15,564,000 13,077,000 9,913,000 11,202,000 28,734,000 17,503,000 12,808,000 20,522,000    29,640,000    25,358,000    203,000   
          net payments on debt borrowings
                                                                                   
          cash and cash equivalents
                                                                                   
          working capital
                                                                                   
          total debt obligations
                                                                                   
          adjustments to reconcile net income from continuing operations to net cash from continuing operating activities:
                                                                                   
          proceeds from sales and maturities of short-term trading investments
                                                                                   
          write-down of notes receivable from picometrix
                                                                              3,723,000   
          in-process research and development
                                                                                   
          changes in operating assets and liabilities
                                                                          6,846,000 -11,532,000 14,788,000       
          net cash from discontinued operations
                                                                                  
          portion of purchase price related to pli acquisition included in other current liabilities
                                                                                   
          net income from continuing operations
                                                                                   
          income from continuing operations after accounting changes
                                                                                 2,730,000  
          adjustments to reconcile income from continuing operations after accounting changes to net cash from continuing operating activities:
                                                                                   
          cumulative effect of accounting changes
                                                                                   
          intangibles amortization
                                                                               947,000 835,000 908,000  
          minority interest in subsidiaries’ earnings
                                                                                   
          equity in (income) loss of joint ventures
                                                                                   
          changes in assets and liabilities:
                                                                                   
          proceeds from sale of medical segment
                                                                                   
          issuance of note receivable from picometrix
                                                                                   
          equipment acquired under capital leases
                                                                                   
          issuance of notes related to sale of common stock
                                                                                   
          repayment of acquisition obligation through issuance of common stock
                                                                                   
          activity resulting from sale of medical segment:
                                                                                   
          shares of lumenis common stock received
                                                                                   
          note receivable from lumenis
                                                                                   
          stock-based compensation charge
                                                                                   
          deferred income tax expense
                                                                                   
          adjustments to reconcile income from continuing operations to net cash from operating activities:
                                                                                   
          restructuring and impairment charges
                                                                              339,000 405,000 16,438,000   
          goodwill impairment
                                                                                  
          restricted cash
                                                                                   
          purchases of available-for-sale investments
                                                                                   
          proceeds from sales and maturities of available-for-sale investments
                                                                                   
          acquisition of business, net of cash acquired
                                                                                   
          other - net
                                                                               509,000 978,000   
          adjustments to reconcile income from continuing operations after accounting changes to net cash from operating activities:
                                                                                   
          other adjustments
                                                                                 634,000  
          cash overdrafts