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Earnings Per Share - Calculation of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
BASIC            
Net income $ 2,988 $ (2,910) $ 5,593 $ 6,993 $ 78 $ 12,586
Weighted-average common shares outstanding, basic (in shares) 12,659   13,672   12,736 13,737
Basic earnings per share (in dollars per share) $ 0.24   $ 0.41   $ 0.01 $ 0.92
DILUTED            
Net income $ 2,988 $ (2,910) $ 5,593 $ 6,993 $ 78 $ 12,586
Weighted-average common shares outstanding, basic (in shares) 12,659   13,672   12,736 13,737
Dilutive effect of stock options, restricted stock and common stock warrants (in shares) 55   254   111 325
Weighted-average common shares outstanding on a diluted basis (in shares) 12,715   13,926   12,847 14,062
Diluted earnings per share (in dollars per share) $ 0.23   $ 0.40   $ 0.01 $ 0.89