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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2020 80,295,141 3,945,867      
Balance at Dec. 31, 2020 $ 40 $ (9,999) $ 411,753 $ (184,909) $ 216,885
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 1,735,682        
Vesting of restricted stock units and issuance of stock under incentive plans $ 1   (1)   0
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares)   109,144      
Increase in treasury stock resulting from shares withheld to cover statutory taxes   $ (624)     (624)
Share-based compensation 0 0 1,272 0 1,272
Net loss $ 0 $ 0 0 (6,258) (6,258)
Balance (in shares) at Mar. 31, 2021 82,228,823 4,055,011      
Exercise of stock options (in shares) 198,000        
Exercise of stock options     934   934
Balance at Mar. 31, 2021 $ 41 $ (10,623) 413,958 (191,167) 212,209
Balance (in shares) at Dec. 31, 2021 83,057,083 4,091,823      
Balance at Dec. 31, 2021 $ 42 $ (10,723) 419,059 (194,968) 213,410
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 926,504        
Vesting of restricted stock units and issuance of stock under incentive plans $ 0   211   $ 211
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares)   208,329     208,329
Increase in treasury stock resulting from shares withheld to cover statutory taxes   $ (448)     $ (448)
Share-based compensation 0 0 1,015 0 1,015
Net loss $ 0 $ 0 0 (2,013) (2,013)
Balance (in shares) at Mar. 31, 2022 83,983,587 4,300,152      
Balance at Mar. 31, 2022 $ 42 $ (11,171) $ 420,285 $ (196,981) $ 212,175