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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Retained Earnings (Accumulated Deficit)
Accumulated Other Comprehensive Loss
Treasury Stock
Beginning balance (in shares) at Dec. 31, 2019   19,399,000        
Beginning balance at Dec. 31, 2019 $ 149,989 $ 194 $ 144,485 $ 19,538 $ (2,767) $ (11,461)
Beginning balance, treasury stock (in shares) at Dec. 31, 2019           (1,397,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss (6,214)     (6,214)    
Other comprehensive income (loss) (2,480) [1]       (2,480)  
Stock-based compensation 805   805      
Issuance of common stock under employee stock purchase plan (in shares)   20,000        
Issuance of common stock under employee stock purchase plan 156   156      
Acquisition of treasury stock (in shares)           (36,000)
Acquisition of treasury stock (390)         $ (390)
Exercise of stock options and issuance of restricted stock awards, net of forfeitures 11   11      
Ending balance (in shares) at Mar. 31, 2020   19,419,000        
Ending balance at Mar. 31, 2020 $ 141,877 $ 194 145,457 13,324 (5,247) $ (11,851)
Ending balance, treasury stock (in shares) at Mar. 31, 2020           (1,433,000)
Beginning balance (in shares) at Dec. 31, 2020 18,429,840 19,863,000        
Beginning balance at Dec. 31, 2020 $ 131,884 $ 199 149,170 (2,402) (3,232) $ (11,851)
Beginning balance, treasury stock (in shares) at Dec. 31, 2020 (1,432,694)         (1,433,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss $ (4,028)     (4,028)    
Other comprehensive income (loss) 223 [1]       223  
Stock-based compensation 932   932      
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   302,000        
Exercise of stock options and issuance of restricted stock awards, net of forfeitures $ 1,558 $ 3 1,555      
Ending balance (in shares) at Mar. 31, 2021 18,731,973 20,165,000        
Ending balance at Mar. 31, 2021 $ 130,569 $ 202 $ 151,657 $ (6,430) $ (3,009) $ (11,851)
Ending balance, treasury stock (in shares) at Mar. 31, 2021 (1,432,694)         (1,433,000)
[1] Tax impact was nominal for all periods.