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Earnings Per Share - Calculation of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
BASIC      
Net income $ 5,301 $ 38,572 $ 3,630
Weighted-average common shares outstanding (in shares) 13,465 13,893 13,879
Basic earnings (loss) per share (in dollars per share) $ 0.39 $ 2.78 $ 0.26
DILUTED      
Net income $ 5,301 $ 38,572 $ 3,630
Weighted-average common shares outstanding (in shares) 13,465 13,893 13,879
Dilutive effect of stock options, restricted stock and common stock warrants (in shares) 277 273 230
Weighted-average common shares outstanding on a diluted basis (in shares) 13,742 14,166 14,109
Diluted earnings (loss) per share (in dollars per share) $ 0.39 $ 2.72 $ 0.26