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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, Common [Member]
Total
Balance (in shares) at Dec. 31, 2021 21,864,724          
Balance at Dec. 31, 2021 $ 218 $ 154,904 $ (112,842) $ (22,994) $ 0  
Net income (loss) 0 0 (2,634) 0 0 $ (2,634)
Foreign currency translation adjustment $ 0 0 0 380 0  
Exercise of stock options (in shares) 43,441          
Exercise of stock options $ 1 (40) 0 0 0  
Noncash compensation (in shares) 45,000          
Noncash compensation $ 0 512 0 0 0  
Balance (in shares) at Jul. 03, 2022 22,131,983          
Balance at Jul. 03, 2022 $ 221 155,214 (113,234) (22,563) 0  
Net income (loss) 0 0 (2,242) 0 0 (2,242)
Foreign currency translation adjustment $ 0 0 0 (51) 0  
Exercise of stock options (in shares) 3,682          
Exercise of stock options $ 0 (3) 0 0 0  
Noncash compensation (in shares) 15,000          
Noncash compensation $ 0 163 0 0 0  
Balance (in shares) at Dec. 31, 2022 22,175,645          
Balance at Dec. 31, 2022 $ 221 155,535 (115,336) (20,845) 0 19,575
Net income (loss) 0 0 (517) 0 0 (517)
Foreign currency translation adjustment $ 0 0 0 1,841 0  
Exercise of stock options (in shares) 106,504          
Exercise of stock options $ 1 (105) 0 0 0  
Noncash compensation (in shares) 45,000          
Noncash compensation $ 0 615 0 0 0  
Balance (in shares) at Jul. 02, 2023 22,414,610          
Balance at Jul. 02, 2023 $ 224 155,860 (115,298) (18,423) 0  
Net income (loss) 0 0 (555) 0 0 $ (555)
Foreign currency translation adjustment $ 0 0 0 (581) 0  
Exercise of stock options (in shares) 25,039          
Exercise of stock options $ 0 (22) 0 0 0  
Noncash compensation (in shares) 15,000          
Noncash compensation $ 0 $ 206 $ 0 $ 0 $ 0