Basic and Diluted Loss per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator [Abstract]
Net income (loss) attributed to common stockholders	$ 11,438	$ (661)	$ 12,464	$ (9,068)
Denominator [Abstract]
Weighted-average shares outstanding for basic earnings per share (in shares)	20,863,479	20,563,452	20,714,068	20,438,571
Effect of dilutive securities [Abstract]
Employee RSUs (in shares)	0	0	0	0
Adjusted weighted-average shares outstanding and assumed conversions for diluted earnings per share (in shares)	20,863,479	20,563,452	20,714,068	20,438,571
Shares related to dilutive securities excluded because inclusion would be anti-dilutive (in shares)	14,229	66,261	77,871	12,172