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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, 2020   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           (1,433,000)
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   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           (1,433,000)
Beginning balance (in shares) at Dec. 31, 2021 18,910,001 20,343,000        
Beginning balance at Dec. 31, 2021 $ 128,977 $ 203 156,199 (12,165) (3,409) $ (11,851)
Beginning balance, treasury stock (in shares) at Dec. 31, 2021 (1,432,694)         (1,433,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss $ (4,692)     (4,692)    
Other comprehensive income (loss) (193) [1]       (193)  
Stock-based compensation 881   881      
Issuance of common stock under employee stock purchase plan (in shares)   22,000        
Issuance of common stock under employee stock purchase plan 193   193      
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   (37,000)        
Taxes accrued for net share settlement of options $ (131)   (131)      
Ending balance (in shares) at Mar. 31, 2022 18,895,272 20,328,000        
Ending balance at Mar. 31, 2022 $ 125,035 $ 203 $ 157,142 $ (16,857) $ (3,602) $ (11,851)
Ending balance, treasury stock (in shares) at Mar. 31, 2022 (1,432,694)         (1,433,000)
[1] Tax impact was nominal for all periods.