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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock Outstanding [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Treasury Stock [Member]
Total
Balance (in shares) at Dec. 31, 2019 21,298,426          
Balance at Dec. 31, 2019 $ 213 $ 154,702 $ (117,433) $ (24,051) $ 0  
Net income 0 0 2,842 0 0 $ 2,842
Foreign currency translation adjustment $ 0 0 0 (1,373) 0  
Exercise of stock options (in shares) 11,154          
Exercise of stock options $ 0 (7) 0 0 0  
Noncash compensation (in shares) 70,000          
Noncash compensation $ 0 335 0 0 0  
Retire treasury stock (in shares) (62,828)          
Retire treasury stock $ 0 (26) 0 0 0  
Balance (in shares) at Oct. 04, 2020 21,316,752          
Balance at Oct. 04, 2020 $ 213 155,004 (114,591) (25,424) 0  
Balance (in shares) at Jul. 04, 2020 21,369,580          
Balance at Jul. 04, 2020 $ 213 154,923 (118,086) (25,532) 0  
Net income 0 0 3,495 0 0 3,495
Foreign currency translation adjustment $ 0 0 0 108 0  
Noncash compensation (in shares) 10,000          
Noncash compensation $ 0 107 0 0 0  
Retire treasury stock (in shares) (62,828)          
Retire treasury stock $ 0 (26) 0 0 0  
Balance (in shares) at Oct. 04, 2020 21,316,752          
Balance at Oct. 04, 2020 $ 213 155,004 (114,591) (25,424) 0  
Balance (in shares) at Dec. 31, 2020 21,300,958          
Balance at Dec. 31, 2020 $ 213 155,025 (115,765) (24,698) 0 14,775
Net income $ 0 0 2,487 0 0 2,487
Issuance of restricted common stock (in shares) 197,500          
Issuance of restricted common stock $ 2 (2) 0 0 0  
Foreign currency translation adjustment $ 0 0 0 (429) 0  
Exercise of stock options (in shares) 210,090          
Exercise of stock options $ 2 (405) 0 0 0  
Noncash compensation (in shares) 35,000          
Noncash compensation $ 0 351 0 0 0  
Retire treasury stock (in shares) 0          
Retire treasury stock $ 0 0 0 0 0  
Balance (in shares) at Oct. 03, 2021 21,743,548          
Balance at Oct. 03, 2021 $ 217 154,969 (113,278) (25,127) 0 16,781
Balance (in shares) at Jul. 04, 2021 21,514,945          
Balance at Jul. 04, 2021 $ 215 154,804 (113,572) (24,749) 0  
Net income $ 0 0 294 0 0  
Issuance of restricted common stock (in shares) 197,500          
Issuance of restricted common stock $ 2 (2) 0 0 0  
Foreign currency translation adjustment $ 0 0 0 (378) 0  
Exercise of stock options (in shares) 13,603          
Exercise of stock options $ 0 (21) 0 0 0  
Noncash compensation (in shares) 17,500          
Noncash compensation $ 0 188 0 0 0  
Retire treasury stock (in shares) 0          
Retire treasury stock $ 0 0 0 0 0  
Balance (in shares) at Oct. 03, 2021 21,743,548          
Balance at Oct. 03, 2021 $ 217 $ 154,969 $ (113,278) $ (25,127) $ 0 $ 16,781