Earnings Per Share - Computation of Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
EARNINGS PER SHARE
Net (loss) income	$ (13,069)	$ 15,662
Adjustment for interest expense recognized on convertible senior notes:		1,165
Net (loss) income - diluted	$ (13,069)	$ 16,827
Weighted-average shares outstanding - basic	33,673,912	34,951,740
Weighted-average shares outstanding - diluted (in shares)	33,673,912	41,160,092
(Loss) earnings per share - basic (in dollars per share)	$ (0.39)	$ 0.45
(Loss) earnings per share - diluted (in dollars per share)	$ (0.39)	$ 0.41
Stock options
EARNINGS PER SHARE
Effect of dilutive securities:		663,921
Restricted stock units
EARNINGS PER SHARE
Effect of dilutive securities:		404,646
Performance share units
EARNINGS PER SHARE
Effect of dilutive securities:		5,201
Employee stock purchase program
EARNINGS PER SHARE
Effect of dilutive securities:		9,693
Warrants
EARNINGS PER SHARE
Effect of dilutive securities:		199,757
Convertible senior notes
EARNINGS PER SHARE
Effect of dilutive securities:		4,925,134