Condensed Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Stockholders' Equity	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment
Beginning Balance at Dec. 31, 2019	$ 82,777		$ 2	$ 146,058	$ 146	$ (63,429)
Beginning Balance, Shares at Dec. 31, 2019			21,483
Equity-based compensation	924			924
Exercise of common stock options	12			12
Exercise of common stock options, Shares			33
Restricted stock awards, Shares			159
Repurchases of capital stock	(46)			(46)
Repurchases of capital stock, Shares			(3)
Other comprehensive gain (loss)	(339)				(339)
Net income (loss)	(1,956)					(1,956)
Ending Balance at Mar. 31, 2020	81,372		$ 2	146,948	(193)	(65,385)
Ending Balance, Shares at Mar. 31, 2020			21,672
Beginning Balance at Dec. 31, 2020	$ 569,387	$ (887)	$ 3	418,065	438	150,881	$ (887)
Beginning Balance, Shares at Dec. 31, 2020	28,178		28,178
Equity-based compensation	$ 2,962			2,962
Exercise of common stock options	44			44
Exercise of common stock options, Shares			45
Restricted stock awards, Shares			187
Common stock withholding for employee tax obligations	(513)			(513)
Common stock withholding for employee tax obligations, Shares			(4)
Issuance of common stock	30,297			30,297
Issuance of common stock, Shares			583
Other comprehensive gain (loss)	(654)				(654)
Cumulative tax effect of accounting change	239					239
Net income (loss)	200,691					200,691
Ending Balance at Mar. 31, 2021	$ 801,566		$ 3	$ 450,855	$ (216)	$ 350,924
Ending Balance, Shares at Mar. 31, 2021	28,989		28,989