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(Loss) Earnings per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Numerator:    
Net (loss) income $ (394) $ 4,082
Denominator for (loss) earnings per basic common share:    
Weighted average common shares outstanding (in shares) 13,263,000 13,157,000
Denominator for (loss) earnings per diluted common share:    
Dilutive effect of stock options and restricted shares (in shares) 0 259,000
Diluted weighted average shares (in shares) 13,263,000 13,416,000
(Loss) earnings per common share:    
Basic (in dollars per share) $ (0.03) $ 0.31
Diluted (in dollars per share) $ (0.03) $ 0.30
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Number of shares not included in the computation of dilutive income (loss) per share (in shares) 315,359  
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Number of shares not included in the computation of dilutive income (loss) per share (in shares) 145,334 182,839