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Earnings Per Share (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]        
Net income (loss) and total comprehensive income (loss) attributable to common stockholders $ 4,134 $ (2,389) $ 3,064 $ (1,527)
Weighted average number of shares outstanding, basic (in shares) 8,210 8,177 8,205 8,172
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units (RSUs) (in shares) 18 0 25 0
Weighted average number of shares outstanding, diluted (in shares) 8,228 8,177 8,230 8,172
Weighted-average shares excluded from computation of earnings per share (in shares) 59 94 37 95