CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings
Balance at beginning of period at Dec. 31, 2020	$ 1,013,145		$ 538,778	$ 474,367
Balance at beginning of period (in shares) at Dec. 31, 2020		473,401
Exercise of common stock options	12,621		12,621
Exercise of common stock options (in shares)		1,794
Issuance of restricted stock, net of forfeitures and shares withheld for taxes	(17,080)		(17,080)
Issuance of restricted stock, net of forfeitures and shares withheld for taxes (in shares)		110
Stock-based compensation	52,985		52,985
Net income	22,642			22,642
Balance at end of period at Mar. 31, 2021	1,084,313		587,304	497,009
Balance at end of period (in shares) at Mar. 31, 2021		475,305
Balance at beginning of period at Dec. 31, 2021	1,527,306		915,177	612,129
Balance at beginning of period (in shares) at Dec. 31, 2021		483,441
Exercise of common stock options	24,408		24,408
Exercise of common stock options (in shares)		2,395
Issuance of restricted stock, net of forfeitures and shares withheld for taxes	(13,428)		(13,428)
Issuance of restricted stock, net of forfeitures and shares withheld for taxes (in shares)		190
Stock-based compensation	125,415		125,415
Net income	(14,598)			(14,598)
Balance at end of period at Mar. 31, 2022	$ 1,649,103		$ 1,051,572	$ 597,531
Balance at end of period (in shares) at Mar. 31, 2022		486,026