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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) 2,525,277 0      
Vesting of restricted stock units and issuance of stock under incentive plans $ 2 $ 0 1,494 0 1,496
Share-based compensation 0 0 3,671 0 3,671
Net loss $ 0 $ 0 0 (13,889) (13,889)
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares) 0 143,913      
Increase in treasury stock resulting from shares withheld to cover statutory taxes $ 0 $ (719) 0 0 (719)
Exercise of stock options (in shares) 198,000 0      
Exercise of stock options $ 0 $ 0 934 0 934
Balance (in shares) at Sep. 30, 2021 83,018,418 4,089,780      
Balance at Sep. 30, 2021 $ 42 $ (10,718) 417,852 (198,798) 208,378
Balance (in shares) at Jun. 30, 2021 82,440,259 4,068,832      
Balance at Jun. 30, 2021 $ 41 $ (10,666) 415,325 (196,346) 208,354
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 578,159 0      
Vesting of restricted stock units and issuance of stock under incentive plans $ 1 $ 0 1,359 0 1,360
Share-based compensation 0 0 1,168 0 1,168
Net loss $ 0 $ 0 0 (2,452) (2,452)
Increase in treasury stock resulting from shares withheld to cover statutory taxes (in shares) 0 20,948      
Increase in treasury stock resulting from shares withheld to cover statutory taxes $ 0 $ (52) 0 0 (52)
Balance (in shares) at Sep. 30, 2021 83,018,418 4,089,780      
Balance at Sep. 30, 2021 $ 42 $ (10,718) 417,852 (198,798) 208,378
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) 1,185,879 0      
Vesting of restricted stock units and issuance of stock under incentive plans $ 0 $ 0 211 0 211
Share-based compensation 0 0 2,720 0 2,720
Net loss $ 0 $ 0 0 (55,844) $ (55,844)
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)
Balance (in shares) at Sep. 30, 2022 84,242,962 4,300,152      
Balance at Sep. 30, 2022 $ 42 $ (11,171) 421,990 (250,812) 160,049
Balance (in shares) at Jun. 30, 2022 84,146,082 4,300,152      
Balance at Jun. 30, 2022 $ 42 $ (11,171) 421,172 (253,925) 156,118
Vesting of restricted stock units and issuance of stock under incentive plans (in shares) 96,880        
Vesting of restricted stock units and issuance of stock under incentive plans $ 0   0   0
Share-based compensation 0 0 818 0 818
Net loss $ 0 $ 0 0 3,113 3,113
Balance (in shares) at Sep. 30, 2022 84,242,962 4,300,152      
Balance at Sep. 30, 2022 $ 42 $ (11,171) $ 421,990 $ (250,812) $ 160,049