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Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Treasury Stock, Common [Member]
Total
Balance (in shares) at Dec. 31, 2021 21,864,724          
Balance at Dec. 31, 2021 $ 218,000 $ 154,904,000 $ (112,842,000) $ (22,994,000) $ 0  
Net loss 0 0 (2,494,000) 0 0 $ (2,494,000)
Employee benefit related, net of tax 0 0 0 1,167,000 0 $ (1,167,000)
Foreign currency translation adjustment, net of tax $ 0 0 0 982,000 0  
Restricted common stock grant (in shares) 197,500          
Restricted common stock grant $ 2,000 (2,000) 0 0 0  
Noncash compensation (in shares) 60,000          
Noncash compensation $ 0 683,000 0 0 0  
Exercise of stock options (in shares) 53,421         138,900
Exercise of stock options $ 1,000 (50,000) 0 0 0  
Balance (in shares) at Dec. 31, 2022 22,175,645          
Balance at Dec. 31, 2022 $ 221,000 155,535,000 (115,336,000) (20,845,000) 0 $ 19,575,000
Net loss 0 0 (1,596,000) 0 0 (1,596,000)
Employee benefit related, net of tax 0 0 0 1,207,000 0 $ (1,189,000)
Foreign currency translation adjustment, net of tax $ 0 0 0 2,571,000 0  
Restricted common stock grant (in shares) 160,000          
Restricted common stock grant $ 2,000 (2,000) 0 0 0  
Noncash compensation (in shares) 60,000          
Noncash compensation $ 0 813,000 0 0 0  
Exercise of stock options (in shares) 106,504         525,600
Exercise of stock options $ 1,000 (105,000) 0 0 0  
Treasury stock (in shares) (42,500)          
Treasury stock $ 0   0 0 0  
Treasury stock   1,000        
Balance (in shares) at Dec. 31, 2023 22,459,649          
Balance at Dec. 31, 2023 $ 224,000 $ 156,242,000 $ (116,932,000) $ (17,067,000) $ 0 $ 22,467,000