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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Capital in Excess of Par Value
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Items
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Treasury stock (in shares)         3,003,419    
Common stock, beginning balance (in shares) at Jan. 01, 2022   14,624,159          
Beginning balance at Jan. 01, 2022 $ 565,616 $ 146 $ 115,888 $ 551,848 $ (73,596) $ (30,350) $ 1,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 95,521     94,849     672
Dividend declared – Common Stock (9,096)     (9,096)      
Activity under stock plans (in shares)         (42,861)    
Activity under stock plans 1,969   919   $ 1,050    
Dividend paid to noncontrolling interest (630)           (630)
Other comprehensive items (43,876)         (43,609) (267)
Common stock, ending balance (in shares) at Oct. 01, 2022   14,624,159          
Treasury stock, ending balance (in shares) at Oct. 01, 2022         2,960,558    
Ending balance at Oct. 01, 2022 609,504 $ 146 116,807 637,601 $ (72,546) (73,959) 1,455
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Treasury stock (in shares)         2,962,186    
Common stock, beginning balance (in shares) at Jul. 02, 2022   14,624,159          
Beginning balance at Jul. 02, 2022 606,164 $ 146 114,825 613,146 $ (72,586) (51,379) 2,012
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 27,671     27,487     184
Dividend declared – Common Stock (3,032)     (3,032)      
Activity under stock plans (in shares)         (1,628)    
Activity under stock plans 2,022   1,982   $ 40    
Dividend paid to noncontrolling interest (630)           (630)
Other comprehensive items (22,691)         (22,580) (111)
Common stock, ending balance (in shares) at Oct. 01, 2022   14,624,159          
Treasury stock, ending balance (in shares) at Oct. 01, 2022         2,960,558    
Ending balance at Oct. 01, 2022 $ 609,504 $ 146 116,807 637,601 $ (72,546) (73,959) 1,455
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Treasury stock (in shares)         2,960,558    
Treasury stock (in shares) 2,949,997       2,949,997    
Common stock, beginning balance (in shares) at Dec. 31, 2022   14,624,159          
Beginning balance at Dec. 31, 2022 $ 655,571 $ 146 119,924 660,644 $ (72,287) (54,578) 1,722
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 89,244     88,673     571
Dividend declared – Common Stock (10,184)     (10,184)      
Activity under stock plans (in shares)         (32,934)    
Activity under stock plans 3,327   2,520   $ 807    
Other comprehensive items $ (4,041)         (4,013) (28)
Common stock, ending balance (in shares) at Sep. 30, 2023   14,624,159          
Treasury stock, ending balance (in shares) at Sep. 30, 2023 2,917,063       2,917,063    
Ending balance at Sep. 30, 2023 $ 733,917 $ 146 122,444 739,133 $ (71,480) (58,591) 2,265
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Treasury stock (in shares)         2,918,261    
Common stock, beginning balance (in shares) at Jul. 01, 2023   14,624,159          
Beginning balance at Jul. 01, 2023 713,025 $ 146 120,117 711,664 $ (71,509) (49,547) 2,154
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 31,039     30,864     175
Dividend declared – Common Stock (3,395)     (3,395)      
Activity under stock plans (in shares)         (1,198)    
Activity under stock plans 2,356   2,327   $ 29    
Other comprehensive items $ (9,108)         (9,044) (64)
Common stock, ending balance (in shares) at Sep. 30, 2023   14,624,159          
Treasury stock, ending balance (in shares) at Sep. 30, 2023 2,917,063       2,917,063    
Ending balance at Sep. 30, 2023 $ 733,917 $ 146 $ 122,444 $ 739,133 $ (71,480) $ (58,591) $ 2,265
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Treasury stock (in shares) 2,917,063       2,917,063