Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income (loss) and total comprehensive income (loss) attributable to common stockholders	$ 8,944	$ (1,070)
Basic weighted average number of shares outstanding, basic (in shares)	8,223	8,200
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units (RSUs) (in shares)	50	0
Weighted average number of shares outstanding, diluted (in shares)	8,273	8,200
Earnings per share, basic (in usd per share)	$ 1.09	$ (0.13)
Diluted net loss per share attributable to common stockholders (in usd per share)	$ 1.08	$ (0.13)