7Baggers

Preformed Line Products Quarterly Balance Sheets Chart

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Annual
 
 Goodwill  
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20200930 20201231 20210331 20210630 20210930 20211231 20220331 20220630 20220930 20221231 20230331 20230630 20230930 20231231 20240331 20240630 20240930 20241231 20250331 20250630 021.442.864.1985.59106.99128.39149.78Milllion

Preformed Line Products Quarterly Balance Sheets Table

Quarterly
 | 
Annual
 
Unit: USD2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2003-09-30 2003-06-30 
                                                                                       
  assets                                                                                     
  cash, cash equivalents and restricted cash66,908,000 54,835,000 57,244,000 47,498,000 47,424,000 45,859,000 53,607,000 43,736,000 43,160,000 31,791,000 37,239,000 30,949,000 30,103,000 34,630,000 36,406,000                                                                       
  accounts receivable123,877,000 118,504,000 111,402,000 110,888,000 101,460,000 111,527,000 106,892,000                                                                               
  inventories143,369,000 135,098,000 129,913,000 142,726,000 141,812,000 141,508,000 148,814,000 149,643,000 148,481,000 149,784,000 147,458,000 134,582,000 127,408,000                                                                         
  prepaid expenses12,735,000 12,261,000 11,720,000 13,053,000 7,394,000 8,314,000 8,246,000 8,334,000 8,749,000 8,299,000 13,283,000 16,447,000 20,855,000 19,111,000 19,778,000                                                                       
  other current assets6,277,000 6,024,000 5,514,000 6,479,000 6,983,000 7,053,000 7,256,000 10,454,000 8,440,000 8,179,000 4,929,000 3,251,000 5,561,000 3,458,000 3,217,000 3,390,000 3,149,000 3,283,000 3,256,000 2,517,000 3,051,000 2,659,000 4,289,000 4,798,000 2,036,000 4,069,000 2,882,000 3,742,000 4,113,000 2,592,000 2,214,000 1,861,000 2,345,000 6,385,000 8,436,000 6,203,000 6,209,000 1,738,000 6,343,000 7,904,000 7,899,000 4,262,000 6,625,000 7,605,000 8,540,000 3,736,000 3,154,000 3,638,000 3,561,000 2,987,000 2,432,000 2,563,000 2,824,000 2,341,000 2,262,000 1,769,000 1,959,000 1,611,000 1,490,000 1,241,000 1,138,000 2,062,000                        
  total current assets353,166,000 326,722,000 315,793,000 320,644,000 305,073,000 314,261,000 324,815,000 338,186,000 353,423,000 339,167,000 328,170,000 308,165,000 307,049,000 299,076,000 272,111,000 271,403,000 258,602,000 240,038,000 256,314,000 245,922,000 238,221,000 222,483,000 231,975,000 232,914,000 237,221,000 220,948,000 214,263,000 215,910,000 214,419,000 217,775,000 207,130,000 206,772,000 195,516,000 196,009,000 189,107,000 192,225,000 182,631,000 182,264,000 188,497,000 193,505,000 200,475,000 191,207,000 200,663,000 204,713,000 204,096,000 196,300,000 185,734,000 198,691,000 195,739,000 199,183,000 194,101,000 207,736,000 209,585,000 210,071,000 196,087,000 200,811,000 186,185,000 167,342,000 166,094,000 143,292,000 142,474,000 138,959,000 137,322,000 126,342,000 114,354,000 112,670,000 127,576,000 125,502,000 123,327,000 119,188,000 126,339,000 119,557,000 112,051,000 105,536,000 109,314,000 115,060,000 111,772,000 110,393,000 112,634,000 106,317,000 103,851,000 101,603,000 101,225,000 81,313,000 83,516,000 
  property, plant and equipment211,923,000 203,083,000 195,086,000 201,194,000 200,441,000 203,242,000 207,892,000 201,105,000 200,325,000 196,151,000 175,011,000 159,884,000 157,444,000                                                                         
  operating lease, right-of-use assets10,458,000 10,138,000 10,117,000 10,742,000 10,594,000 11,021,000 11,671,000 11,635,000 10,862,000 10,756,000 10,752,000 9,973,000 10,987,000 11,793,000 12,400,000 12,872,000 13,414,000 12,426,000 13,139,000 12,762,000 12,989,000 13,062,000 12,453,000 12,512,000 13,011,000 10,067,000                                                            
  goodwill29,518,000 27,746,000 26,685,000 28,672,000 27,901,000 28,603,000 29,497,000 28,447,000 29,530,000 28,687,000 28,004,000 26,347,000 34,792,000 38,435,000 28,194,000 28,695,000 29,316,000 28,844,000 29,508,000 27,689,000 27,048,000 25,814,000 27,840,000 25,278,000 28,726,000 25,465,000 15,621,000 15,882,000 15,867,000 16,622,000 16,544,000 16,689,000 16,478,000 16,145,000 15,769,000 16,556,000 16,282,000 16,290,000 15,821,000 15,551,000 16,575,000 16,958,000 17,792,000 18,359,000 19,384,000 19,181,000 13,873,000 14,972,000 14,608,000 15,570,000 15,537,000 15,441,000 15,116,000 14,776,000 12,222,000 12,880,000 12,388,000 12,346,000 12,056,000 6,654,000 6,992,000 6,925,000 6,436,000 6,151,000 5,296,000 5,520,000 6,140,000 5,063,000 4,483,000 3,928,000                
  other intangible assets9,966,000 9,736,000 9,656,000 10,983,000 11,059,000 11,868,000 12,981,000 12,728,000 13,682,000 13,909,000 14,082,000 13,718,000 15,104,000                                                                         
  deferred income taxes7,204,000 6,284,000 6,546,000 9,502,000 7,721,000 7,379,000 7,109,000 6,925,000 6,415,000 6,147,000 5,320,000 5,904,000 5,551,000 5,645,000 3,839,000 8,948,000 9,191,000 5,459,000 10,863,000 6,515,000 6,275,000 6,094,000 7,564,000 8,220,000 7,462,000 6,737,000 6,900,000 7,830,000 8,023,000 7,908,000 7,774,000 10,321,000 10,897,000 10,469,000 10,208,000 13,910,000 13,642,000 12,746,000 8,608,000 8,886,000 8,334,000 8,052,000 7,249,000 7,081,000 6,231,000 6,463,000 7,022,000 6,752,000 5,884,000 6,091,000 6,557,000 5,642,000 6,111,000 4,754,000 6,262,000 5,341,000 5,974,000 4,784,000 3,557,000 3,452,000 3,142,000 3,256,000 2,184,000 3,225,000 2,612,000 2,786,000 3,218,000 2,976,000 3,555,000 3,209,000 3,885,000 3,413,000 3,380,000 2,639,000 4,430,000 3,912,000 4,160,000 3,870,000 4,008,000 3,998,000 3,774,000 3,727,000 3,149,000   
  other assets9,226,000 8,742,000 9,994,000 10,216,000 9,798,000 9,735,000 9,186,000 7,577,000 6,869,000 6,704,000 6,521,000 6,723,000 6,129,000 6,448,000 10,661,000 10,639,000 10,720,000 11,025,000 10,855,000 10,787,000 13,686,000 12,968,000 14,605,000 13,167,000 13,611,000 12,407,000 10,600,000 10,882,000 11,506,000 14,002,000 9,719,000 10,132,000 10,978,000 10,601,000 10,274,000 11,355,000 11,055,000 11,297,000 11,703,000 12,477,000 10,747,000 11,758,000 13,087,000 14,711,000 15,697,000 17,486,000 17,135,000 13,572,000 9,885,000 10,569,000 9,993,000 10,373,000 9,613,000 10,097,000 9,385,000 10,697,000 10,014,000 8,675,000 9,118,000 9,287,000 8,514,000 9,277,000 7,072,000 6,788,000 6,267,000 5,944,000 8,193,000 8,911,000 8,244,000 8,190,000 2,837,000 2,623,000 2,653,000 2,760,000 2,476,000 2,453,000 2,560,000 2,401,000 2,419,000 2,445,000 2,420,000 2,446,000    
  total assets631,461,000 592,451,000 573,877,000 591,953,000 572,587,000 586,109,000 603,151,000 606,603,000 621,942,000 602,248,000 568,479,000 530,714,000 537,056,000 534,500,000 489,018,000 493,593,000 483,409,000 457,003,000 461,087,000 452,041,000 436,266,000 413,257,000 433,571,000 425,004,000 425,153,000 387,128,000 358,797,000 363,969,000 364,080,000 375,961,000 359,785,000 362,625,000 351,571,000 350,540,000 340,937,000 352,618,000 342,245,000 330,770,000 324,573,000 331,721,000 345,044,000 337,869,000 353,967,000 362,114,000 367,933,000 358,584,000 332,406,000 345,042,000 335,021,000 342,757,000 333,064,000 344,068,000 342,958,000 348,988,000 312,235,000 321,296,000 301,863,000 280,979,000 279,005,000 240,076,000 240,418,000 235,372,000 221,344,000 208,101,000 191,272,000 190,875,000 211,343,000 212,342,000 210,957,000 203,866,000 202,266,000 188,974,000 179,892,000 170,963,000 171,468,000 177,141,000 171,258,000 168,547,000 170,018,000 162,332,000 160,258,000 158,808,000 155,473,000 147,235,000 150,841,000 
  liabilities and shareholders' equity                                                                                     
  trade accounts payable51,137,000 45,252,000 41,951,000 42,426,000 42,945,000 41,748,000 37,788,000 51,451,000 50,033,000 56,273,000 46,839,000 48,124,000 49,217,000 51,499,000 42,376,000 38,501,000 38,737,000 33,945,000 31,646,000 30,299,000 30,866,000 28,534,000 28,282,000 28,607,000 28,727,000 25,743,000 26,414,000 29,749,000 28,240,000 27,653,000 25,141,000 24,725,000 24,145,000 23,893,000 21,978,000 26,373,000 20,677,000 21,455,000 20,377,000 22,392,000 23,582,000 19,572,000 22,332,000 24,686,000 23,781,000 22,483,000 21,750,000 23,837,000 26,246,000 24,212,000 21,822,000 24,981,000 26,342,000 26,256,000 27,317,000 27,623,000 27,710,000 27,001,000 24,684,000 20,405,000 19,484,000 18,764,000 17,188,000 16,037,000 14,520,000 14,632,000 19,041,000 19,553,000 20,848,000 16,083,000 17,073,000 16,155,000 14,865,000 11,606,000 12,840,000 13,416,000 11,624,000 10,878,000 11,480,000 10,723,000 10,102,000 11,111,000 10,683,000 7,952,000 8,765,000 
  notes payable to banks4,414,000 5,845,000 7,782,000 8,006,000 6,938,000 1,487,000 6,968,000 10,893,000 13,701,000 13,842,000 18,098,000 17,917,000 16,856,000 14,236,000 16,423,000 17,697,000 14,661,000 12,853,000 17,428,000 15,582,000 12,402,000 10,512,000 8,696,000 7,398,000 9,846,000 7,778,000 9,042,000 3,795,000 2,722,000 1,835,000 864,000 562,000 1,379,000 664,000 1,315,000 324,000 826,000 825,000 413,000 1,027,000 2,431,000 1,735,000 1,809,000 1,233,000 597,000 2,923,000 1,105,000 501,000 97,000 217,000 728,000 281,000 1,500,000 2,686,000 6,465,000 3,584,000 1,246,000 831,000 3,268,000 3,570,000 3,181,000 3,301,000 4,025,000 3,375,000 3,101,000 2,858,000 2,750,000 3,656,000 4,076,000 4,322,000 4,256,000 4,816,000 3,738,000 2,645,000 2,714,000 1,194,000 1,156,000 1,133,000 1,290,000 702,000 735,000 1,066,000 1,013,000 1,014,000 
  operating lease liabilities, current1,798,000 1,751,000 1,588,000 1,611,000 1,563,000 1,532,000 1,671,000 1,631,000 1,188,000 1,543,000 1,606,000 1,637,000 1,959,000 2,012,000 1,986,000 2,100,000 2,108,000 2,083,000 2,240,000 2,214,000 2,170,000 1,991,000 2,062,000 2,090,000 2,142,000 2,005,000                                                            
  current portion of long-term debt3,928,000 3,378,000 2,430,000 2,618,000 2,812,000 7,078,000 6,486,000 6,680,000 6,889,000 3,026,000 3,018,000 3,183,000 3,217,000 3,261,000 3,116,000 3,114,000 6,717,000 9,033,000 5,216,000 7,198,000 2,789,000 3,309,000 3,354,000 2,719,000 2,279,000 1,494,000 1,448,000 1,448,000 1,448,000 1,448,000 1,448,000 1,448,000 1,448,000 1,448,000 1,448,000 1,569,000 1,564,000 117,000 110,000 104,000 112,000 111,000 116,000 123,000 138,000 162,000 195,000 191,000 267,000 184,000 251,000 356,000 453,000 584,000 605,000 722,000 1,258,000 1,276,000 1,253,000 1,080,000 1,480,000 1,330,000 967,000 894,000 428,000 494,000 948,000 1,630,000 1,602,000 1,949,000 1,434,000 1,795,000 2,168,000 2,157,000 3,404,000 3,320,000 3,413,000 4,806,000 1,736,000 1,303,000 1,401,000 1,272,000 1,653,000 3,636,000 3,809,000 
  accrued compensation and other benefits25,574,000 20,788,000 25,904,000 29,499,000 24,398,000 23,348,000      28,431,000 24,313,000 20,415,000                                                                        
  accrued expenses and other liabilities25,582,000 26,608,000 25,503,000 26,229,000 22,574,000 20,961,000 27,414,000 26,919,000 22,727,000 19,199,000 17,635,000 17,534,000 22,315,000 21,658,000 17,522,000 22,055,000 18,412,000 18,001,000 17,508,000 14,931,000 13,564,000 13,993,000 16,718,000 17,806,000 19,354,000 17,414,000 12,582,000 13,047,000 12,532,000 13,329,000 14,686,000 17,199,000 13,660,000 14,690,000 12,331,000 13,931,000 13,990,000 13,373,000 13,334,000 12,923,000 12,555,000 12,044,000 13,021,000 10,958,000 9,707,000 9,998,000 11,118,000 10,286,000 10,206,000 11,255,000 11,865,000 15,179,000 14,674,000 14,287,000 13,027,000 13,673,000 9,772,000 9,088,000 10,275,000 7,490,000 8,486,000 8,375,000 7,517,000 6,484,000 5,224,000 4,574,000 9,223,000 7,672,000 7,164,000 7,507,000 6,093,000 6,497,000 4,865,000 4,551,000 5,284,000 5,243,000 5,437,000 6,406,000 4,938,000 4,969,000 4,814,000 4,368,000 4,019,000 4,349,000 5,290,000 
  dividends payable1,173,000 1,146,000 1,293,000 1,257,000 1,224,000 1,189,000 1,300,000 1,262,000 1,228,000 1,194,000 1,318,000 1,277,000 1,238,000 1,350,000 1,301,000 1,261,000 1,222,000 1,183,000 1,292,000 1,256,000 1,220,000 1,205,000 1,173,000 1,132,000 1,092,000 1,055,000 1,051,000 1,050,000 1,055,000 1,058,000 1,046,000 1,050,000 1,055,000 1,055,000 1,037,000 1,040,000 1,059,000 1,067,000 1,057,000 1,073,000 1,109,000 1,110,000 1,220,000 1,100,000 1,107,000 1,107,000 1,098,000 1,106,000 1,106,000  102,000 1,099,000 1,104,000 1,104,000 1,095,000 1,098,000 1,101,000 1,087,000 1,085,000 1,091,000 1,091,000 1,076,000 1,072,000 1,073,000 1,071,000 1,054,000 1,053,000 1,043,000 1,076,000 1,076,000 1,076,000 1,076,000 1,072,000 1,072,000 1,072,000 1,145,000 1,144,000 1,147,000 1,146,000 1,144,000 1,146,000 1,141,000 1,143,000 1,157,000 1,157,000 
  income taxes payable1,165,000 1,149,000 1,962,000 2,353,000 1,530,000 2,361,000 1,672,000 6,756,000 5,794,000 7,803,000 2,465,000 2,359,000 555,000 1,066,000 1,108,000 824,000 617,000 648,000 5,456,000 2,467,000 1,668,000 1,240,000 1,758,000 2,814,000 1,337,000 1,018,000 815,000 912,000 1,199,000 1,898,000 1,903,000 1,157,000 1,038,000 972,000 1,055,000 1,221,000 907,000 1,183,000 195,000 193,000 191,000 1,726,000 1,735,000    1,556,000    2,304,000             1,225,000 954,000 1,100,000 2,089,000 1,161,000 960,000 772,000                
  total current liabilities114,771,000 105,917,000 108,413,000 113,999,000 103,984,000 99,704,000 111,317,000 135,802,000 126,770,000 125,217,000 115,335,000 120,462,000 119,670,000 115,497,000 105,535,000 114,356,000 107,446,000 97,673,000 103,774,000 98,195,000 84,338,000 74,451,000 81,073,000 83,482,000 83,502,000 70,938,000 69,487,000 70,403,000 64,822,000 61,592,000 62,833,000 65,568,000 59,080,000 55,890,000 55,455,000 62,818,000 54,389,000 50,520,000 51,891,000 55,758,000 55,336,000 48,716,000 55,327,000 59,884,000 53,332,000 52,362,000 52,215,000 57,076,000 56,631,000 55,705,000 58,243,000 68,317,000 66,525,000 63,377,000 70,796,000 72,548,000 62,716,000 56,558,000 58,934,000 48,675,000 46,410,000 46,340,000 44,899,000 41,087,000 37,011,000 35,248,000 48,284,000 45,452,000 44,937,000 42,349,000 43,493,000 40,582,000 37,377,000 33,405,000 39,058,000 36,816,000 34,258,000 34,725,000 32,367,000 28,585,000 28,066,000 27,922,000 30,667,000 28,704,000 30,248,000 
  long-term debt, less current portion27,878,000 25,682,000 18,357,000 24,582,000 28,820,000 47,928,000 48,796,000 45,269,000 68,944,000 68,374,000 68,420,000 55,944,000 57,502,000 60,594,000 40,048,000 42,424,000 42,066,000 37,394,000 33,333,000 45,220,000 57,657,000 58,724,000 53,722,000 52,888,000 55,222,000 41,769,000 24,960,000 32,681,000 37,308,000 43,793,000 34,598,000 32,828,000 36,570,000 45,319,000 42,943,000 44,227,000 44,593,000 35,845,000 31,754,000 31,659,000 30,743,000 30,741,000 31,749,000 32,134,000 34,149,000 31,931,000 13,054,000 14,951,000 12,444,000 16,077,000 9,322,000 14,940,000 25,464,000 33,652,000 13,381,000 14,189,000 14,798,000 9,374,000 14,456,000 3,704,000 7,646,000 3,099,000 3,441,000 2,930,000 2,491,000 2,653,000 2,854,000 3,200,000 3,217,000 3,010,000 3,523,000 1,694,000 1,740,000 2,204,000 1,836,000 1,925,000 1,761,000 122,000 2,452,000 2,501,000 2,570,000 2,362,000 2,105,000 253,000 1,300,000 
  operating lease liabilities, noncurrent6,656,000 6,455,000 6,538,000 6,992,000 7,011,000 7,391,000  7,907,000 7,496,000 7,108,000                                                                            
  other noncurrent liabilities17,883,000 15,559,000 14,479,000 14,556,000 14,347,000 14,304,000 15,454,000 14,816,000 16,978,000 17,329,000 14,912,000 12,552,000 12,936,000 14,147,000 12,737,000 11,753,000 13,017,000 14,284,000 14,421,000 13,246,000 13,446,000 11,799,000 13,568,000 11,850,000 11,526,000 8,936,000 8,010,000 7,720,000 10,582,000 10,926,000 11,063,000 7,275,000 6,825,000 6,704,000 6,495,000 6,073,000 5,950,000 5,741,000 6,675,000 6,865,000 6,434,000 6,355,000 6,445,000 5,957,000 6,000,000 5,924,000 4,603,000 4,692,000 4,553,000 4,496,000 4,457,000 3,896,000 3,855,000 3,942,000 3,494,000 4,889,000 4,811,000 4,735,000 3,061,000 2,924,000 1,826,000 3,021,000 2,757,000 2,632,000 2,437,000 2,540,000 1,962,000 2,018,000 2,022,000 1,772,000                
  shareholders' equity                                                                                     
  common shares 2 par value per share, 15,000,000 shares authorized, 4,924,737 and 4,913,621 issued and outstanding, at june 30, 2025 and december 31, 202413,823,000                                                                                     
  common shares issued to rabbi trust, 223,168 and 222,887 shares at june 30, 2025 and december 31, 2024, respectively-9,613,000                                                                                     
  deferred compensation liability9,613,000 9,594,000 9,575,000 9,557,000 10,233,000 10,214,000 10,183,000 10,069,000 10,039,000 10,076,000 10,261,000 10,261,000 10,231,000 10,201,000 10,102,000 10,102,000 10,850,000 10,820,000 10,940,000 10,940,000 10,910,000 10,880,000 10,981,000 10,981,000 11,066,000 11,038,000 11,008,000 11,008,000 10,988,000 11,849,000 11,834,000 12,109,000 12,089,000 12,069,000 12,054,000 12,054,000 12,034,000 12,014,000 12,052,000 11,657,000 11,637,000 11,617,000 11,790,000 9,196,000 9,176,000 9,156,000 9,306,000 6,577,000 6,557,000 6,517,000 6,522,000 3,867,000 3,847,000 3,807,000 1,280,000                               
  paid-in capital64,019,000 62,205,000 65,093,000 63,108,000 62,361,000 61,408,000 60,958,000 59,548,000 56,943,000 54,956,000 53,646,000 51,749,000 49,918,000 48,847,000 47,814,000 46,956,000 45,564,000 44,322,000 43,134,000 42,047,000 40,385,000 39,747,000 38,854,000 37,642,000 36,200,000 35,146,000 34,401,000 33,284,000 31,657,000 30,576,000 29,734,000 26,983,000 25,916,000 25,315,000 24,629,000 24,200,000 23,536,000 23,299,000 22,916,000 22,344,000 23,311,000 23,342,000 22,795,000 22,190,000                                          
  retained earnings575,368,000 563,678,000 553,179,000 543,743,000 537,079,000 528,733,000 520,154,000 514,839,000 500,726,000 481,278,000 460,930,000 445,460,000 434,718,000 421,921,000 410,673,000 402,720,000 393,032,000 385,184,000 379,035,000 377,384,000 365,443,000 355,984,000 353,292,000 348,710,000 341,804,000 334,947,000 334,170,000 329,959,000 321,954,000 316,275,000 311,765,000 312,206,000 306,979,000 303,877,000 303,415,000 299,351,000 295,618,000 293,923,000 292,311,000 241,557,000 245,346,000 242,900,000 244,470,000 243,074,000 243,521,000 239,548,000 238,168,000 239,703,000 235,052,000 232,456,000 227,622,000 225,199,000 218,844,000 213,451,000 198,668,000 194,075,000 189,957,000 184,060,000 179,140,000 171,048,000 166,122,000 165,953,000 156,086,000 150,938,000 148,261,000 146,624,000 144,917,000 139,547,000 142,069,000 140,339,000 140,716,000 136,128,000 133,686,000 131,734,000 130,774,000 138,617,000 136,217,000 135,481,000 135,745,000 132,712,000 130,672,000 128,738,000 126,441,000 121,209,000 122,876,000 
  treasury shares, at cost, 1,986,382 and 1,961,772 shares at june 30, 2025 and december 31, 2024, respectively-130,163,000                                                                                     
  accumulated other comprehensive loss-62,311,000 -76,115,000 -82,909,000 -65,092,000 -72,664,000 -66,782,000 -60,306,000 -70,431,000 -63,586,000 -65,976,000 -69,987,000 -81,757,000 -69,629,000 -59,529,000 -61,719,000 -60,221,000 -54,842,000 -59,266,000 -54,551,000 -65,549,000 -68,573,000 -74,136,000 -57,353,000 -62,733,000 -56,944,000 -58,137,000 -59,583,000 -57,239,000 -56,792,000 -43,517,000 -47,440,000 -45,922,000 -48,932,000 -51,825,000 -57,369,000 -50,609,000 -51,986,000 -50,207,000 -54,151,000 -53,907,000 -44,005,000 -43,662,000 -35,134,000 -23,383,000 -13,572,000 -15,870,000 -17,702,000 -19,198,000 -21,651,000 -13,167,000 -13,664,000 -15,915,000 -18,692,000 -11,657,000 -11,448,000 -244,000 -3,447,000 -6,010,000 -8,051,000 -15,591,000 -11,481,000 -11,369,000 -13,549,000 -18,421,000 -27,765,000 -24,511,000 -7,442,000  -2,192,000 -4,100,000 -7,566,000 -10,009,000 -12,331,000 -13,084,000 -12,821,000 -13,504,000 -14,118,000 -14,645,000 -13,360,000 -14,158,000 -13,619,000 -12,359,000 -15,906,000   
  total preformed line products company shareholders' equity460,736,000 435,776,000 422,315,000 428,971,000 416,218,000 413,369,000 416,164,000 399,813,000 398,449,000 380,706,000 358,637,000    316,117,000    292,078,000    268,535,000                                                               
  noncontrolling interest40,000 45,000 9,000 16,000  -1,000 -8,000 15,000  8,000 -13,000 10,000 8,000 -1,000 -17,000 6,000 11,000 -11,000 -9,000 3,000 -5,000 -12,000 33,000 54,000 -38,000                                -832,000 -675,000 -635,000 -268,000 -386,000 -145,000 424,000 487,000 719,000                     
  total shareholders' equity460,776,000 435,821,000 422,324,000 428,987,000 416,218,000 413,368,000 416,156,000 399,828,000 398,449,000 380,714,000 358,624,000    316,100,000    292,069,000    268,568,000    249,370,000    238,537,000    223,543,000                                                   
  total liabilities and shareholders' equity631,461,000 592,451,000 573,877,000 591,953,000 572,587,000 586,109,000 603,151,000 606,603,000 621,942,000 602,248,000 568,479,000    489,018,000    461,087,000    433,571,000    358,797,000    359,785,000    340,937,000                                                   
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,940,131 and 4,913,621 issued and outstanding, at march 31, 2025 and december 31, 2024 13,820,000                                                                                    
  common shares issued to rabbi trust, 223,034 and 222,887 shares at march 31, 2025 and december 31, 2024, respectively -9,594,000                                                                                    
  treasury shares, at cost, 1,969,354 and 1,961,772 shares at march 31, 2025 and december 31, 2024, respectively -127,812,000                                                                                    
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,913,621 and 4,908,413 issued and outstanding, at december 31, 2024 and december 31, 2023, respectively  13,752,000                                                                                   
  common shares issued to rabbi trust, 222,887 and 243,118 shares at december 31, 2024 and december 31, 2023, respectively  -9,575,000                                                                                   
  treasury shares, at cost, 1,961,772 and 1,894,419 shares at december 31, 2024 and december 31, 2023, respectively  -126,800,000                                                                                   
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,897,450 and 4,908,413 issued and outstanding, at september 30, 2024 and december 31, 2023   13,715,000                                                                                  
  common shares issued to rabbi trust, 222,741 and 243,118 shares at september 30, 2024 and december 31, 2023, respectively   -9,557,000                                                                                  
  treasury shares, at cost, 1,959,512 and 1,894,419 shares at september 30, 2024 and december 31, 2023, respectively   -126,503,000                                                                                  
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,913,496 and 4,908,413 issued and outstanding, at june 30, 2024 and december 31, 2023    13,711,000                                                                                 
  common shares issued to rabbi trust, 238,787 and 243,118 shares at june 30, 2024 and december 31, 2023, respectively    -10,233,000                                                                                 
  treasury shares, at cost, 1,941,690 and 1,894,419 shares at june 30, 2024 and december 31, 2023, respectively    -124,269,000                                                                                 
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,918,036 and 4,908,413 issued and outstanding, at march 31, 2024 and december 31, 2023     13,711,000                                                                                
  common shares issued to rabbi trust, 238,641 and 243,118 shares at march 31, 2024 and december 31, 2023, respectively     -10,214,000                                                                                
  treasury shares, at cost, 1,937,150 and 1,894,419 shares at march 31, 2024 and december 31, 2024, respectively     -123,701,000                                                                                
  accrued compensation      18,441,000 23,192,000 19,919,000 18,698,000 14,962,000    13,756,000 21,933,000                                                                      
  accrued profit-sharing and other benefits      9,577,000 7,018,000 5,291,000 3,639,000 9,394,000    7,947,000 6,871,000 5,022,000 3,104,000 8,252,000 6,484,000 4,443,000 2,447,000 7,213,000 5,959,000 4,312,000 2,903,000 6,982,000 6,055,000 4,195,000 2,718,000 6,284,000 5,578,000 4,000,000 2,703,000 6,251,000 5,643,000  3,019,000 5,648,000 5,082,000 3,886,000 2,521,000 5,151,000 5,161,000 3,818,000 2,332,000 5,086,000 4,842,000 3,599,000 2,656,000 5,387,000 5,211,000 4,231,000 2,699,000 4,558,000 3,386,000 2,618,000 4,464,000 3,947,000 2,652,000 1,859,000 3,890,000 3,239,000 2,424,000 4,001,000 3,687,000 3,330,000 2,493,000 1,843,000 3,577,000 3,779,000 2,826,000 2,332,000 3,596,000            
  operating lease liabilities, non-current      7,892,000    7,023,000 6,331,000 6,959,000 7,567,000 8,154,000 8,654,000 9,202,000 8,190,000 8,743,000 8,528,000 8,642,000 8,675,000 8,246,000 8,366,000 8,806,000 8,379,000                                                            
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,908,413 and 4,917,020 issued and outstanding, at december 31, 2023 and december 31, 2022, respectively      13,607,000                                                                               
  common shares issued to rabbi trust, 243,118 and 245,386 shares at december 31, 2023 and december 31, 2022, respectively      -10,183,000                                                                               
  treasury shares, at cost, 1,894,419 and 1,758,901 shares at december 31, 2023 and december 31, 2022, respectively      -118,249,000                                                                               
  accounts receivable, less allowances       126,019,000 144,593,000 141,114,000 125,261,000 122,936,000 123,122,000 115,764,000 98,203,000 108,034,000 104,674,000 93,654,000 92,686,000 96,712,000 94,840,000 83,441,000 83,517,000 85,842,000 91,767,000 73,604,000 73,139,000 87,034,000 78,107,000 77,421,000 73,972,000 80,370,000 79,686,000 70,513,000 63,415,000 69,473,000 65,060,000 67,728,000 63,626,000 66,195,000 63,270,000 63,426,000 67,942,000 72,772,000 75,864,000 74,957,000 67,587,000 73,917,000 67,089,000 66,713,000 61,695,000 75,805,000 73,343,000 74,534,000 68,959,000 74,970,000 62,294,000 56,102,000 63,437,000 51,894,000 49,277,000 49,245,000 45,937,000 41,285,000 41,006,000 36,899,000 46,752,000 48,275,000 42,368,000 40,482,000 43,768,000 40,535,000 38,336,000 30,029,000 36,389,000 34,975,000 33,870,000 26,481,000        
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,893,469 and 4,917,020 issued and outstanding, at september 30, 2023 and december 31, 2022       13,559,000                                                                              
  common shares issued to rabbi trust, 241,528 and 245,386 shares at september 30, 2023 and december 31, 2022, respectively       -10,069,000                                                                              
  treasury shares, at cost, 1,891,268 and 1,758,901 shares at september 30, 2023 and december 31, 2022, respectively       -117,702,000                                                                              
  pension asset        836,000 727,000 619,000                                                                           
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,917,501 and 4,917,020 issued and outstanding, at june 30, 2023 and december 31, 2022        13,509,000                                                                             
  common shares issued to rabbi trust, 241,343 and 245,386 shares at june 30, 2023 and december 31, 2022, respectively        -10,039,000                                                                             
  treasury shares, at cost, 1,840,552 and 1,758,901 shares at june 30, 2023 and december 31, 2022, respectively        -109,143,000                                                                             
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,947,924 and 4,917,020 issued and outstanding, at march 31, 2023 and december 31, 2022         13,491,000                                                                            
  common shares issued to rabbi trust, 241,151 and 245,386 shares at march 31, 2023 and december 31, 2022, respectively         -10,076,000                                                                            
  treasury shares, at cost, 1,800,474 and 1,758,901 shares at march 31, 2023 and december 31, 2022, respectively         -103,043,000                                                                            
  pension obligation           560,000 3,056,000 3,350,000 3,653,000 4,923,000                                                                      
  common shares – 2 par value per share, 15,000,000 shares authorized, 4,917,020 and 4,907,143 issued and outstanding, at december 31, 2022 and december 31, 2021, respectively          13,351,000                                                                           
  common shares issued to rabbi trust, 245,386 and 243,138 shares at december 31, 2022 and december 31, 2021, respectively          -10,261,000                                                                           
  treasury shares, at cost, 1,758,901 and 1,685,387 shares at december 31, 2022 and december 31, 2021, respectively          -99,303,000                                                                           
  liabilities and shareholders’ equity                                                                                     
  shareholders’ equity                                                                                     
  shareholders’ equity:                                                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,919,841 and 4,907,143 issued and outstanding, at september 30, 2022 and december 31, 2021, respectively           13,316,000                                                                          
  common shares issued to rabbi trust, 245,386 and 243,138 shares at september 30, 2022 and december 31, 2021, respectively           -10,261,000                                                                          
  treasury shares, at cost, 1,741,727 and 1,685,387 shares at september 30, 2022 and december 31, 2021, respectively           -97,771,000                                                                          
  total preformed line products, company shareholders’ equity           330,997,000 332,679,000 328,910,000  308,790,000 303,632,000 291,149,000  279,575,000 264,161,000 251,512,000  259,663,000                                                              
  total shareholders’ equity           331,007,000 332,687,000 328,909,000  308,796,000 303,643,000 291,138,000  279,578,000 264,156,000 251,500,000  259,717,000 257,814,000 250,203,000  246,405,000 239,529,000 247,021,000  244,652,000 236,597,000 230,133,000  226,466,000 223,017,000 224,268,000 218,984,000 220,586,000 235,433,000 233,367,000 242,925,000 252,590,000 262,734,000 256,410,000 252,330,000 251,055,000 242,795,000 246,839,000 241,069,000 235,213,000 225,008,000 225,698,000 209,809,000 214,394,000 204,518,000 195,465,000 188,670,000 172,997,000 171,209,000 170,821,000 158,798,000 148,088,000 135,761,000 136,265,000 151,323,000 154,001,000 153,459,000 149,721,000 146,336,000 139,246,000 133,701,000 130,933,000 130,189,000 138,010,000 134,853,000 133,543,000 134,988,000 131,023,000 129,439,000 128,337,000 122,479,000 117,297,000 118,220,000 
  total liabilities and shareholders’ equity           530,714,000 537,056,000 534,500,000  493,593,000 483,409,000 457,003,000  452,041,000 436,266,000 413,257,000  425,004,000 425,153,000 387,128,000  363,969,000 364,080,000 375,961,000  362,625,000 351,571,000 350,540,000  352,618,000 342,245,000 330,770,000 324,573,000 331,721,000 345,044,000 337,869,000 353,967,000 362,114,000 367,933,000 358,584,000 332,406,000 345,042,000 335,021,000 342,757,000 333,064,000 344,068,000 342,958,000 348,988,000 312,235,000 321,296,000 301,863,000 280,979,000 279,005,000 240,076,000 240,418,000 235,372,000 221,344,000 208,101,000 191,272,000 190,875,000 211,343,000 212,342,000 210,957,000 203,866,000 202,266,000 188,974,000 179,892,000 170,963,000 171,468,000 177,141,000 171,258,000 168,547,000 170,018,000 162,332,000 160,258,000 158,808,000 155,473,000 147,235,000 150,841,000 
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,940,578 and 4,907,143 issued and outstanding, at june 30, 2022 and december 31, 2021, respectively            13,303,000                                                                         
  common shares issued to rabbi trust, 244,969 and 243,138 shares at june 30, 2022 and december 31, 2021, respectively            -10,231,000                                                                         
  treasury shares, at cost, 1,714,822 and 1,685,387 shares at june 30, 2022 and december 31, 2021, respectively            -95,631,000                                                                         
  inventories – net             126,113,000                                                                  35,337,000 35,104,000     
  property, plant and equipment – net             156,434,000                                                                        
  other intangible assets – net             16,669,000                                                                        
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,940,094 and 4,907,143 issued and outstanding, at march 31, 2022 and december 31, 2021, respectively             13,302,000                                                                        
  common shares issued to rabbi trust, 244,485 and 243,138 shares at march 31, 2022 and december 31, 2021, respectively             -10,201,000                                                                        
  treasury shares, at cost, 1,714,822 and 1,685,387 shares at march 31, 2022 and december 31, 2021, respectively             -95,631,000                                                                        
  inventories - net              114,507,000 108,603,000 105,428,000 99,694,000 97,537,000 94,315,000 95,454,000 92,513,000 95,718,000 92,227,000 92,732,000 87,557,000 85,259,000 82,402,000 83,212,000 83,342,000 77,886,000 75,675,000 75,498,000 77,440,000 74,484,000 73,665,000 72,139,000 70,302,000 69,912,000 73,071,000 78,133,000 76,097,000 80,037,000 79,415,000 78,986,000 79,638,000 73,835,000     87,789,000 88,685,000  85,014,000                           36,264,000 33,516,000   
  property, plant and equipment - net              149,774,000 148,097,000 148,511,000 145,400,000 125,965,000 134,440,000 124,261,000 119,356,000 124,018,000 117,697,000 112,263,000 103,186,000 102,955,000 104,608,000 105,172,000 109,836,000 108,598,000 108,307,000 107,234,000 106,812,000 105,104,000 107,327,000 107,235,000 96,708,000 91,965,000 92,209,000 97,543,000 97,886,000 102,531,000 105,138,000 108,202,000 105,146,000 100,461,000     90,017,000 88,360,000                                 
  other intangible assets - net              12,039,000 12,939,000                                                                      
  shareholders' equity:                                                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,907,143 and 4,902,233 issued and outstanding, at december 31, 2021 and december 31, 2020, respectively              13,185,000                                                                       
  common shares issued to rabbi trust, 243,138 and 265,508 shares at december 31, 2021 and december 31, 2020, respectively              -10,102,000                                                                       
  treasury shares, at cost, 1,685,387 and 1,611,927 shares at december 31 and                                                                                     
  december 31, 2020, respectively              -93,836,000                                                                       
  cash and cash equivalents               38,326,000 33,454,000 34,685,000 45,175,000 41,248,000 36,507,000 34,117,000 38,929,000 41,158,000 41,260,000 43,457,000 43,609,000 34,032,000 41,395,000 45,488,000 44,358,000 39,163,000 28,002,000 31,034,000 30,737,000 32,940,000 28,143,000 31,363,000 30,393,000 26,870,000 30,730,000 30,530,000 29,643,000 28,722,000 24,585,000 21,173,000 24,291,000 31,153,000 31,198,000 27,024,000 28,120,000 28,115,000 30,398,000 29,186,000 23,751,000 23,617,000 24,146,000 22,655,000 22,337,000 22,110,000 24,751,000 24,097,000 35,520,000 27,701,000 20,795,000 19,869,000 24,775,000 23,331,000 21,831,000 23,392,000 20,574,000 23,529,000 21,392,000 29,949,000 26,026,000 34,424,000 32,443,000 39,592,000 34,880,000 31,219,000 31,553,000 29,744,000 30,008,000 14,871,000 14,002,000 
  prepaid tax expense               2,754,000                                                                      
  other prepaid expenses               10,296,000                                                                      
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,899,945 and 4,902,233 issued and outstanding, at september 30, 2021 and december 31, 2020, respectively               13,171,000                                                                      
  common shares issued to rabbi trust, 243,138 and 265,508 shares at september 30, 2021 and december 31, 2020, respectively               -10,102,000                                                                      
  treasury shares, at cost, 1,685,387 and 1,611,927 shares at september 30, 2021 and december 31, 2020, respectively               -93,836,000                                                                      
  prepaids                10,169,000 7,642,000 15,289,000 8,336,000 6,518,000 6,255,000 6,921,000 6,821,000 7,299,000 7,664,000 6,205,000 6,756,000 5,369,000 5,274,000 3,434,000 4,814,000 4,040,000 4,248,000 3,353,000 4,433,000 4,686,000 5,047,000 4,030,000 5,908,000 6,480,000 4,963,000 6,926,000 5,245,000 5,717,000 6,218,000 6,112,000 6,108,000 6,169,000 6,901,000 5,652,000 5,384,000 5,822,000 5,824,000 7,938,000 10,155,000 8,638,000 9,069,000 3,477,000 3,705,000 5,873,000 4,263,000                        
  prepaid taxes                1,728,000 1,080,000 2,371,000 2,794,000 1,851,000 3,498,000 2,601,000 2,068,000 2,127,000 4,597,000 3,169,000 1,944,000 2,223,000 3,658,000 5,266,000 4,889,000 5,945,000 6,389,000 8,682,000 5,511,000 6,394,000 6,086,000 5,585,000 4,671,000 5,629,000 3,877,000 2,241,000 3,873,000 4,173,000 4,115,000 3,733,000 3,193,000 3,146,000 3,159,000 2,729,000 2,438,000 2,402,000 1,570,000 1,901,000 2,679,000 2,060,000  3,927,000 3,759,000                          
  intangibles - net                13,655,000 13,811,000 14,443,000 13,926,000 13,786,000 13,480,000 15,116,000 15,216,000 12,859,000 8,318,000 8,458,000 8,857,000 9,093,000 9,818,000 10,020,000 10,404,000 10,468,000 10,504,000 10,475,000                                                   
  accrued compensation and amounts withheld from employees                19,950,000 16,823,000 14,736,000 17,764,000 15,216,000 11,220,000 11,817,000 14,957,000 14,413,000 11,528,000 11,153,000 14,347,000 13,431,000 11,653,000 11,461,000 13,849,000 12,355,000 10,465,000 10,040,000 12,717,000 11,338,000 9,481,000 9,306,000 12,318,000 10,924,000 10,318,000 9,876,000 14,468,000 12,640,000 11,856,000 10,787,000 15,214,000 14,295,000 13,684,000 12,271,000 17,154,000 15,416,000 14,137,000 16,078,000 14,482,000 12,419,000 9,848,000 12,910,000 11,167,000 9,770,000 8,345,000 10,221,000 8,925,000 7,438,000 6,606,000 9,742,000 9,150,000 7,788,000 7,309,000 7,992,000 6,826,000 6,218,000 5,556,000 6,568,000 6,036,000 5,643,000 5,161,000 6,164,000 5,566,000 4,978,000 4,879,000 5,307,000 4,564,000 4,084,000 
  unfunded pension obligation                5,218,000 5,522,000 5,826,000 4,384,000 5,148,000 5,279,000 5,278,000 5,082,000 5,085,000 5,172,000 5,259,000 4,919,000 10,006,000 10,583,000 10,664,000 10,058,000 10,298,000 10,368,000 10,423,000 10,518,000 11,567,000 11,597,000 11,627,000 12,336,000 12,343,000 12,423,000 12,503,000 4,354,000 4,521,000 4,763,000 5,027,000 11,636,000 12,263,000 12,762,000 13,184,000 15,186,000 15,877,000 15,866,000 9,574,000 9,774,000 9,681,000 9,473,000 9,464,000 9,202,000 11,996,000 8,678,000 10,096,000 11,145,000 11,327,000 11,303,000 3,122,000 3,035,000 2,949,000 2,787,000    3,982,000            
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,906,559 and 4,902,233 issued and outstanding, at june 30, 2021 and december 31, 2020, respectively                13,170,000                                                                     
  common shares issued to rabbi trust, 262,181 and 265,508 shares at june 30, 2021 and december 31, 2020, respectively                -10,850,000                                                                     
  treasury shares, at cost, 1,678,317 and 1,611,927 shares at june 30, 2021 and december 31, 2020, respectively                -93,292,000                                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,912,959 and 4,902,233 issued and outstanding, at march 31, 2021 and december 31, 2020, respectively                 13,155,000                                                                    
  common shares issued to rabbi trust, 261,781 and 265,508 shares at march 31, 2021 and december 31, 2020, respectively                 -10,820,000                                                                    
  treasury shares, at cost, 1,664,517 and 1,611,927 shares at march 31, 2021 and december 31, 2020, respectively                 -92,246,000                                                                    
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,902,233 and 4,992,979 issued and outstanding, at december 31, 2020 and december 31, 2019, respectively                  13,028,000                                                                   
  common shares issued to rabbi trust, 265,508 and 267,641 shares at december 31, 2020 and december 31, 2019, respectively                  -10,940,000                                                                   
  treasury shares, at cost, 1,611,927 and 1,431,235 shares at                                                                                     
  december 31, 2020 and december 31, 2019, respectively                  -88,568,000                                                                   
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,914,543 and 4,992,979 issued and outstanding, at september 30, 2020 and december 31, 2019, respectively                   13,013,000                                                                  
  common shares issued to rabbi trust, 265,508 and 267,641 shares at september 30, 2020 and december 31, 2019, respectively                   -10,940,000                                                                  
  treasury shares, at cost, 1,592,027 and 1,431,235 shares at september 30, 2020 and december 31, 2019, respectively                   -87,320,000                                                                  
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,934,506 and 4,992,979 issued and outstanding, at june 30, 2020 and december 31, 2019, respectively                    13,003,000                                                                 
  common shares issued to rabbi trust, 264,886 and 267,641 shares at june 30, 2020 and december 31, 2019, respectively                    -10,910,000                                                                 
  treasury shares, at cost, 1,567,692 and 1,431,235 shares at june 30, 2020 and december 31, 2019, respectively                    -86,097,000                                                                 
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,995,114 and 4,992,979 issued and outstanding, at march 31, 2020 and december 31, 2019, respectively                     13,003,000                                                                
  common shares issued to rabbi trust, 264,283 and 267,641 shares at march 31, 2020 and december 31, 2019, respectively                     -10,880,000                                                                
  treasury shares, at cost, 1,506,481 and 1,431,235 shares at march 31, 2020 and december 31, 2019, respectively                     -83,086,000                                                                
  common shares - 2 par value per share, 15,000,000 shares authorized, 4,992,979 and 5,020,410 issued and outstanding, at december 31, 2019 and december 31, 2018, respectively                      12,848,000                                                               
  common shares issued to rabbi trust, 267,641 and 269,630 shares at december 31, 2019 and december 31, 2018, respectively                      -10,981,000                                                               
  treasury shares, at cost, 1,431,235 and 1,310,387 shares at                                                                                     
  december 31, 2019 and december 31, 2018, respectively                      -79,106,000                                                               
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,016,293 and 5,020,410 issued and outstanding, at september 30, 2019 and december 31, 2018, respectively                       12,825,000                                                              
  common shares issued to rabbi trust, 267,641 and 269,630 shares at september 30, 2019 and december 31, 2018, respectively                       -10,981,000                                                              
  treasury shares, at cost, 1,396,152 and 1,310,387 shares at september 30, 2019 and december 31, 2018, respectively                       -76,781,000                                                              
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,030,181 and 5,020,410 issued and outstanding, at june 30, 2019 and december 31, 2018, respectively                        12,822,000                                                             
  common shares issued to rabbi trust, 270,860 and 269,630 shares at june 30, 2019 and december 31, 2018, respectively                        -11,066,000                                                             
  treasury shares, at cost, 1,381,002 and 1,310,387 shares at june 30, 2019 and december 31, 2018, respectively                        -76,030,000                                                             
  total preformed line products company shareholders’ equity                        257,852,000                                                             
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,059,380 and 5,020,410 issued and outstanding, at march 31, 2019 and december 31, 2018, respectively                         12,821,000                                                            
  common shares issued to rabbi trust, 270,335 and 269,630 shares at march 31, 2019 and december 31, 2018, respectively                         -11,038,000                                                            
  treasury shares, at cost, 1,351,278 and 1,310,387 shares at march 31, 2019 and december 31, 2018, respectively                         -74,574,000                                                            
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,020,410 and 5,038,207 issued and outstanding, at december 31, 2018 and december 31, 2017, respectively                          12,662,000                                                           
  common shares issued to rabbi trust, 269,630 and 289,026 shares at december 31, 2018 and december 31, 2017, respectively                          -11,008,000                                                           
  treasury shares, at cost, 1,310,387 and 1,258,069 shares at                                                                                     
  december 31, 2018 and december 31, 2017, respectively                          -72,280,000                                                           
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,012,109 and 5,038,207 issued and outstanding, at september 30, 2018 and december 31, 2017, respectively                           12,643,000                                                          
  common shares issued to rabbi trust, 269,630 and 289,026 shares at september 30, 2018 and december 31, 2017, respectively                           -11,008,000                                                          
  treasury shares, at cost, 1,309,617 and 1,258,069 shares at september 30, 2018 and december 31, 2017, respectively                           -72,242,000                                                          
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,036,978 and 5,038,207 issued and outstanding, at june 30, 2018 and december 31, 2017, respectively                            12,639,000                                                         
  common shares issued to rabbi trust, 269,358 and 289,026 shares at june 30, 2018 and december 31, 2017, respectively                            -10,988,000                                                         
  treasury shares, at cost, 1,282,476 and 1,258,069 shares at june 30, 2018 and december 31, 2017, respectively                            -69,929,000                                                         
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,048,758 and 5,038,207 issued and outstanding, at march 31, 2018 and december 31, 2017, respectively                             12,635,000                                                        
  common shares issued to rabbi trust, 289,138 and 289,026 shares at march 31, 2018 and december 31, 2017, respectively                             -11,849,000                                                        
  treasury shares, at cost, 1,268,976 and 1,258,069 shares at march 31, 2018 and december 31, 2017, respectively                             -68,948,000                                                        
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,038,207 and 5,117,753 issued and outstanding, at december 31, 2017 and december 31, 2016, respectively                              12,593,000                                                       
  common shares issued to rabbi trust, 289,026 and 297,281 shares at december 31, 2017 and december 31, 2016, respectively                              -11,834,000                                                       
  treasury shares, at cost, 1,258,069 and 1,136,443 shares at                                                                                     
  december 31, 2017 and december 31, 2016, respectively                              -68,115,000                                                       
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,091,381 and 5,117,753 issued and outstanding, at september 30, 2017 and december 31, 2016, respectively                               12,514,000                                                      
  common shares issued to rabbi trust, 298,160 and 297,281 shares at september 30, 2017 and december 31, 2016, respectively                               -12,109,000                                                      
  treasury shares, at cost, 1,165,736 and 1,136,443 shares at september 30, 2017 and december 31, 2016, respectively                               -61,129,000                                                      
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,115,981 and 5,117,753 issued and outstanding, at june 30, 2017 and december 31, 2016, respectively                                12,514,000                                                     
  common shares issued to rabbi trust, 297,840 and 297,281 shares at june 30, 2017 and december 31, 2016, respectively                                -12,089,000                                                     
  treasury shares, at cost, 1,140,816 and 1,136,443 shares at june 30, 2017 and december 31, 2016, respectively                                -59,880,000                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,118,088 and 5,117,753 issued and outstanding, at march 31, 2017 and december 31, 2016, respectively                                 12,513,000                                                    
  common shares issued to rabbi trust, 297,408 and 297,281 shares at march 31, 2017 and december 31, 2016, respectively                                 -12,069,000                                                    
  treasury shares, at cost, 1,138,277 and 1,136,443 shares at march 31, 2017 and december 31, 2016, respectively                                 -59,747,000                                                    
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,117,753 and 5,221,062 issued and outstanding, at december 31, 2016 and december 31, 2015, respectively                                  12,508,000                                                   
  common shares issued to rabbi trust, 297,281 and 296,635 shares at december 31, 2016 and december 31, 2015, respectively                                  -12,054,000                                                   
  treasury shares, at cost, 1,136,443 and 1,018,013 shares at                                                                                     
  december 31, 2016 and december 31, 2015, respectively                                  -59,640,000                                                   
  patents and other intangibles - net                                   11,245,000 11,400,000 11,465,000 11,288,000 11,323,000 12,484,000 13,016,000 14,121,000 15,009,000 16,494,000 16,549,000 11,787,000     14,265,000 14,309,000  11,654,000                           3,247,000 3,340,000   
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,125,849 and 5,221,062 issued and outstanding, at september 30, 2016 and december 31, 2015, respectively                                   12,498,000                                                  
  common shares issued to rabbi trust, 297,281 and 296,635 shares at september 30, 2016 and december 31, 2015, respectively                                   -12,054,000                                                  
  treasury shares, at cost, 1,122,290 and 1,018,013 shares at september 30, 2016 and december 31, 2015, respectively                                   -58,974,000                                                  
  accrued profit -sharing and other benefits                                    4,028,000                                                 
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,170,214 and 5,221,062 issued and outstanding, at june 30, 2016 and december 31, 2015, respectively                                    12,484,000                                                 
  common shares issued to rabbi trust, 296,817 and 296,635 shares at june 30, 2016 and december 31, 2015, respectively                                    -12,034,000                                                 
  treasury shares, at cost, 1,071,589 and 1,018,013 shares at june 30, 2016 and december 31, 2015, respectively                                    -56,635,000                                                 
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,204,950 and 5,221,062 issued and outstanding, at march 31, 2016 and december 31, 2015                                     12,483,000                                                
  common shares issued to rabbi trust, 296,326 and 296,635 shares at march 31, 2016 and december 31, 2015                                     -12,014,000                                                
  treasury shares, at cost, 1,036,362 and 1,018,013 shares at march 31, 2016 and december 31, 2015                                     -55,230,000                                                
  income taxes payable and deferred income taxes                                      1,646,000 839,000 737,000 1,305,000 1,802,000 2,155,000 1,544,000 1,501,000 1,076,000 1,099,000 912,000 3,617,000 6,328,000 3,609,000 4,024,000 2,810,000 5,430,000 5,099,000 4,254,000 2,548,000 3,949,000 1,522,000 670,000 1,379,000                        
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,221,062 and 5,397,138 issued and outstanding, at december 31, 2015 and december 31, 2014                                      12,478,000                                               
  common shares issued to rabbi trust, 296,635 and 292,609 shares at december 31, 2015 and december 31, 2014, respectively                                      -12,052,000                                               
  treasury shares, at cost, 1,018,013 and 819,424 shares at december 31, 2015 and december 31, 2014                                      -54,570,000                                               
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,296,036 and 5,397,138 issued and outstanding, net of 922,425 and 819,424 treasury shares at par, respectively, at september 30, 2015 and december 31, 2014                                       10,592,000                                              
  common shares issued to rabbi trust, 291,021 and 292,609 shares at september 30, 2015 and december 31, 2014                                       -11,657,000                                              
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,391,671 and 5,397,138 issued and outstanding, net of 827,211 and 819,424 treasury shares at par, respectively, at june 30, 2015 and december 31, 2014                                        10,781,000                                             
  common shares issued to rabbi trust, 290,470 and 292,609 shares at june 30, 2015 and december 31, 2014                                        -11,637,000                                             
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,393,371 and 5,397,138 issued and outstanding, net of 824,011 and 819,424 treasury shares at par, respectively, at march 31, 2015 and december 31, 2014                                         10,787,000                                            
  common shares issued to rabbi trust, 289,942 and 292,609 shares at march 31, 2015 and december 31, 2014                                         -11,617,000                                            
  plpc shareholders’ equity:                                                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,397,138 and 5,391,074 issued and outstanding, net of 819,424 and 779,279 treasury shares at par, respectively, at december 31, 2014 and december 31, 2013                                          10,794,000                                           
  common shares issued to rabbi trust, 292,609 and 253,156 shares at december 31, 2014 and december 31, 2013                                          -11,790,000                                           
  income taxes payable, noncurrent                                           1,549,000 1,541,000 1,610,000  1,585,000 2,355,000 2,420,000  2,246,000 1,939,000 1,905,000 1,819,000 1,836,000 1,772,000 1,768,000 1,672,000 1,722,000  1,898,000 746,000 1,536,000 1,474,000 1,405,000 1,270,000 1,974,000 1,905,000 1,837,000                
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,354,460 and 5,391,074 issued and outstanding, net of 819,424 and 779,279 treasury shares at par, respectively, at september 30, 2014 and december 31, 2013                                           10,709,000                                          
  common shares issued to rabbi trust, 249,931 and 253,156 shares at september 30, 2014 and december 31, 2013                                           -9,196,000                                          
  thousands of dollars, except share and per share data                                                                                     
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,389,992 and 5,391,074 issued and outstanding, net of 783,418 and 779,279 treasury shares at par, respectively, at june 30, 2014 and december 31, 2013                                            10,778,000                                         
  common shares issued to rabbi trust, 249,557 and 253,156 shares at june 30, 2014 and december 31, 2013                                            -9,176,000                                         
  paid in capital                                            22,007,000 21,955,000 21,082,000 19,828,000 18,672,000 16,797,000 16,355,000 15,314,000 14,190,000 13,239,000 12,092,000 11,307,000 9,514,000 8,748,000 7,774,000 7,301,000 6,448,000 5,885,000 5,369,000 4,610,000 4,095,000 3,704,000 3,402,000 3,012,000 2,822,000 2,720,000 2,429,000 2,370,000 1,629,000 1,562,000 1,515,000 1,448,000 1,319,000 1,237,000 1,146,000 1,026,000 928,000 545,000 509,000 82,000 82,000 
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,388,733 and 5,391,074 issued and outstanding, net of 783,418 and 779,279 treasury shares at par, respectively, at march 31, 2014 and december 31, 2013                                             10,777,000                                        
  common shares issued to rabbi trust, 249,198 and 253,156 shares at march 31, 2014 and december 31, 2013                                             -9,156,000                                        
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,391,074 and 5,377,937 issued and outstanding, net of 779,279 and 689,472 treasury shares at par, respectively, at december 31, 2013 and december 31, 2012                                              10,782,000                                       
  common shares issued to rabbi trust, 253,156 and 184,036 shares at december 31, 2013 and december 31, 2012                                              -9,306,000                                       
  inventories—net                                               73,930,000 78,692,000 86,308,000 86,916,000   91,862,000                                
  property, plant and equipment—net                                               98,453,000 95,718,000 96,943,000 93,326,000   93,102,000                                
  patents and other intangibles—net                                               12,365,000 12,447,000 13,710,000 14,038,000   15,129,000                                
  common shares—2 par value per share, 15,000,000 shares authorized, 5,361,155 and 5,377,937 issued and outstanding, net of 732,579 and 689,472 treasury shares at par, respectively, at september 30, 2013 and december 31, 2012                                               10,722,000                                      
  common shares issued to rabbi trust, 184,787 and 184,036 shares at september 30, 2013 and december 31, 2012                                               -6,577,000                                      
  common shares—2 par value per share, 15,000,000 shares authorized, 5,360,879 and                                                                                     
  5,377,937 issued and outstanding, net of 727,579 and 689,472 treasury shares at par, respectively, at june 30, 2013 and december 31, 2012                                                10,722,000                                     
  common shares issued to rabbi trust, 184,511 and 184,036 shares at june 30, 2013 and december 31, 2012                                                -6,557,000                                     
  common shares—2 par value per share, 15,000,000 shares authorized, 5,376,254 and 5,377,937 issued and outstanding, net of 691,472 and 689,472 treasury shares at par, respectively, at march 31, 2013 and december 31, 2012                                                 10,753,000                                    
  common shares issued to rabbi trust, 183,929 and 184,036 shares at march 31, 2013 and december 31, 2012                                                 -6,517,000                                    
  common shares—2 par value per share, 15,000,000 shares authorized, 5,377,937 and 5,333,630 issued and outstanding, net of 689,472 and 639,138 treasury shares at par, respectively, at december 31, 2012 and december 31, 2011                                                  10,756,000                                   
  common shares issued to rabbi trust, 184,036 and 109,040 shares at december 31, 2012 and december 31, 2011                                                  -6,522,000                                   
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,307,589 and 5,333,630 issued and outstanding, net of 676,898 and 639,138 treasury shares at par, respectively, at september 30, 2012 and december 31, 2011                                                   10,615,000                                  
  common shares issued to rabbi trust                                                   -3,867,000 -3,847,000 -3,807,000 -1,280,000 -1,260,000 -1,220,000 -1,200,000                            
  common shares - 2 par value per share, 15,000,000 shares authorized, 5,333,018 and 5,333,630 issued and outstanding, net of 642,388 and 639,138 treasury shares at par, respectively, at june 30, 2012 and december 31, 2011                                                    10,666,000                                 
  common shares—2 par value per share, 15,000,000 shares authorized, 5,332,454 and 5,333,630 issued and outstanding, net of 640,638 and 639,138 treasury shares at par, respectively, at march 31, 2012 and december 31, 2011                                                     10,665,000                                
  property and equipment - net                                                      78,855,000                           48,169,000 46,286,000   
  common stock - 2 par value per share, 15,000,000 shares authorized, 5,248,396 and 5,270,977 issued and outstanding, net of 639,138 and 586,746 treasury shares at par, respectively                                                      10,497,000                               
  total plpc shareholders’ equity                                                      209,809,000 214,394,000 205,350,000 196,140,000 189,305,000 173,265,000 171,595,000 170,966,000 158,374,000 147,601,000 135,042,000                     
  inventories — net                                                       82,280,000 81,114,000 73,121,000 67,869,000 57,131,000 58,293,000 56,036,000 48,439,000 49,149,000 45,910,000 48,412,000 47,020,000 44,823,000 51,294,000 47,563,000 53,435,000 47,948,000 44,183,000 40,415,000 39,316,000 38,655,000 37,878,000 37,618,000 35,904,000     31,598,000 33,134,000 
  property and equipment — net                                                       80,571,000 77,987,000 76,266,000 73,228,000 68,304,000 69,592,000 67,766,000 61,124,000 58,769,000 55,009,000 55,940,000 60,934,000 63,143,000 65,547,000 62,901,000 60,451,000 55,421,000 54,016,000 52,810,000 52,567,000 52,432,000 49,928,000 48,804,000 48,252,000     48,061,000 48,745,000 
  patents and other intangibles — net                                                       12,545,000 12,407,000  12,848,000 7,501,000 7,988,000 8,087,000 3,505,000 3,538,000 3,575,000 3,858,000 4,287,000 5,722,000 5,734,000 5,637,000 2,716,000 2,385,000 2,465,000 2,546,000 2,628,000 2,709,000 2,789,000 2,871,000 2,965,000       
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,258,210 and 5,270,977 issued and outstanding, net of 623,138 and 586,746 treasury shares at par, respectively                                                       10,516,000                              
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,272,804 and 5,270,977 issued and outstanding, net of 586,746 and 586,746 treasury shares at par, respectively                                                        10,546,000                             
  other intangibles — net                                                         12,735,000                            
  common shares — 2 par value per share, 15,000,000 shares authorized, 5,270,977 and 5,248,298 issued and outstanding, net of 586,746 and 554,059 treasury shares at par, respectively                                                         10,542,000                            
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,220,847 and 5,248,298 issued and outstanding, net of 587,286 and 551,059 treasury shares at par, respectively                                                          10,442,000                           
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,253,306 and 5,248,298 issued and outstanding, net of 553,747 and 554,059 treasury shares at par, respectively                                                           10,507,000                          
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,253,140 and 5,248,298 issued and outstanding, net of 554,205 and 554,059 treasury shares at par, respectively                                                            10,506,000                         
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,248,298 and 5,223,830 issued and outstanding, net of 554,059 and 551,059 treasury shares at par, respectively                                                             10,497,000                        
  prepaids and other                                                              5,242,000 4,982,000 4,031,000 4,704,000 5,811,000 6,097,000 4,279,000 4,542,000 4,677,000 4,132,000 4,760,000 2,504,000 3,153,000 3,094,000 3,421,000 2,832,000 2,175,000 3,314,000 2,208,000 2,651,000 2,340,000 4,223,000 4,857,000 
  income taxes and deferred taxes payable                                                              1,394,000                       
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,234,039 and 5,223,830 issued and outstanding, net of 554,059 and 551,059 treasury shares at par, respectively                                                              10,468,000                       
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,236,839 and 5,223,830 issued and outstanding, net of 551,059 treasury shares at par, respectively                                                               10,474,000                      
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,225,630 and 5,223,830 issued and outstanding, net of 551,059 treasury shares at par, respectively                                                                10,451,000                     
  current assets of discontinued operations                                                                                     
  current liabilities of discontinued operations                                                                                     
  minority interests                                                                 736,000 1,381,000 1,255,000 937,000 904,000                
  common stock — 2 par value per share, 15,000,000 shares authorized, 5,223,830 and 5,380,956 issued and outstanding, net of 551,059 and 378,333 treasury shares at par, respectively                                                                 10,448,000                    
  common stock — 2 par value, 15,000,000 shares authorized, 5,223,180 and 5,380,956 issued and outstanding, net of 551,059 and 378,333 treasury shares at par, respectively                                                                  10,446,000                   
  common stock — 2 par value, 15,000,000 shares authorized, 5,214,830 and 5,380,956 issued and outstanding, net of 551,059 and 378,333 treasury shares at par, respectively                                                                   10,430,000                  
  accumulated other comprehensive income                                                                   1,012,000                  
  common stock — 2 par value, 15,000,000 shares authorized, 5,379,856 and 5,380,956 issued and outstanding, net of 381,733 and 378,333 treasury shares at par, respectively                                                                    10,760,000                 
  common stock — 2 par value, 15,000,000 shares authorized, 5,380,956 and 5,360,259 issued and outstanding, net of 378,333 and 365,311 treasury shares at par, respectively                                                                     10,762,000                
  goodwill — net                                                                      6,128,000 4,876,000 4,793,000 2,166,000 2,073,000 2,027,000 1,995,000 2,018,000 2,083,000       
  income taxes                                                                      1,724,000 1,151,000 1,041,000 1,129,000 2,849,000 1,226,000 954,000 881,000 2,221,000 849,000 952,000 777,000 3,211,000 2,365,000 2,406,000 
  unfunded pension liabilities                                                                      4,465,000 4,325,000 4,185,000             
  unrecognized tax benefits                                                                      1,896,000 2,231,000 1,875,000             
  other non-current liabilities                                                                      1,026,000 375,000 375,000             
  minority interest                                                                      961,000               
  common shares — 2 par value, 15,000,000 shares authorized, 5,378,456 and 5,360,259 issued and outstanding, net of 373,333 and 365,311 treasury shares at par, respectively                                                                      10,757,000 10,757,000              
  common shares — 2 par value, 15,000,000 shares authorized, 5,358,437 and 5,360,259 issues and outstanding, net of 367,333 and 365,311 treasury shares at par, respectively                                                                        10,717,000             
  common stock — 2 par value, 15,000,000 shares authorized, 5,360,259 and 5,734,797 issued and outstanding, net of 365,311 and 511,159 treasury shares at par, respectively                                                                         10,721,000            
  accrued profit-sharing and pension contributions                                                                          4,385,000 3,704,000 4,773,000 4,290,000 3,549,000 2,741,000 3,971,000 3,639,000 3,585,000 3,668,000 3,723,000 
  common shares — 2 par value, 15,000,000 shares authorized, 5,360,259 and 5,734,797 outstanding, net of 365,311 and 511,159 treasury shares at par, respectively                                                                          10,721,000           
  common shares — 2 par value, 15,000,000 shares authorized, 5,724,570 and 5,734,797 outstanding, net of 0 and 511,159 treasury shares at par, respectively                                                                           11,449,000          
  common shares — 2 par value, 15,000,000 shares authorized, 5,717,552 and 5,734,797 outstanding, net of 529,050 and 511,159 treasury shares at par, respectively                                                                            11,435,000         
  common stock — 2 par value, 15,000,000 shares authorized, 5,734,797 and 5,706,713 issued and outstanding, net of 511,159 and 491,159 treasury shares at par, respectively                                                                             11,470,000        
  accounts receivables                                                                              35,667,000 32,449,000 31,212,000 29,217,000 32,212,000 27,185,000 26,659,000 
  common shares — 2 par value, 15,000,000 shares authorized, 5,728,697 and 5,706,713 outstanding, net of 511,159 and 491,159 treasury shares at par, respectively                                                                              11,457,000       
  property and equipment – net                                                                               47,697,000 47,641,000     
  goodwill – net                                                                               2,076,000 2,113,000     
  patents and other intangibles – net                                                                               3,058,000 3,152,000     
  common shares – 2 par value, 15,000,000 shares authorized, 5,721,597 and 5,706,713 outstanding, net of 511,159 and 491,159 treasury shares at par, respectively                                                                               11,443,000      
  common shares – 2 par value, 15,000,000 shares authorized, 5,729,097 and 5,706,713 outstanding, net of 496,159 and 491,159 treasury shares at par, respectively                                                                                11,458,000     
  investments in foreign joint ventures                                                                                   8,302,000 8,842,000 
  goodwill - net                                                                                 2,130,000 2,037,000   
  common stock - 2 par value, 15,000,000 shares authorized, 5,706,713 and 5,814,269 issued and outstanding, net of 491,159 and 377,404 treasury shares at par, respectively                                                                                 11,413,000    
  investments in foreign joint venture                                                                                     
  other                                                                                  2,371,000 3,404,000 3,365,000 
  deferred income taxes - long-term                                                                                  222,000   
  minimum pension liability                                                                                     
  common shares - 2 par value, 15,000,000 shares authorized, 5,717,433 and 5,814,269 outstanding, net of 477,404 and 377,404 treasury shares at par                                                                                  11,435,000   
  deferred income taxes — short-term                                                                                   3,436,000 4,864,000 
  deferred income taxes — long-term                                                                                   644,000 790,000 
  goodwill, patents and other intangibles — net                                                                                   5,511,000 5,583,000 
  minimum pension liability and other                                                                                   854,000 854,000 
  common shares — 2 par value, 15,000,000 shares authorized, 5,784,494 and 5,772,710 issued and outstanding, net of 377,404 and 389,188 treasury shares at par                                                                                   11,569,000 11,569,000 
  other comprehensive loss                                                                                   -15,563,000 -16,307,000 

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