Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional paid-in capital Cumulative Effect, Period of Adoption, Adjustment	Additional paid-in capital	Accumulated deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated deficit	Cumulative Effect, Period of Adoption, Adjustment	Total
Balance at Dec. 31, 2020	$ 161		$ 1,528,535		$ (1,466,056)		$ 62,640
Balance (in shares) at Dec. 31, 2020	160,616,675
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan	$ 1		2,229				2,230
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	1,314,337
Share-based compensation expense related to share-based awards and employee stock purchase plan			5,396				5,396
Net income					39,926		39,926
Balance at Mar. 31, 2021	$ 162		1,536,160		(1,426,130)		110,192
Balance (in shares) at Mar. 31, 2021	161,931,012
Balance at Dec. 31, 2020	$ 161		1,528,535		(1,466,056)		62,640
Balance (in shares) at Dec. 31, 2020	160,616,675
Increase (Decrease) in Stockholders' Equity (Deficit)
Net income							487,074
Balance at Sep. 30, 2021	$ 163		1,558,760		(978,982)		579,941
Balance (in shares) at Sep. 30, 2021	163,405,013
Balance at Mar. 31, 2021	$ 162		1,536,160		(1,426,130)		110,192
Balance (in shares) at Mar. 31, 2021	161,931,012
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan	$ 1		5,671				5,672
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	900,941
Share-based compensation expense related to share-based awards and employee stock purchase plan			4,589				4,589
Net income					391,303		391,303
Balance at Jun. 30, 2021	$ 163		1,546,420		(1,034,827)		511,756
Balance (in shares) at Jun. 30, 2021	162,831,953
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan			6,134				6,134
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	573,060
Share-based compensation expense related to share-based awards and employee stock purchase plan			6,206				6,206
Net income					55,845		55,845
Balance at Sep. 30, 2021	$ 163		1,558,760		(978,982)		579,941
Balance (in shares) at Sep. 30, 2021	163,405,013
Balance at Dec. 31, 2021	$ 162	$ (110,217)	1,543,357	$ 66,167	(937,608)	$ (44,050)	$ 605,911
Balance (in shares) at Dec. 31, 2021	162,036,461						162,036,461
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan	$ 1		1,520				$ 1,521
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	1,087,966
Share-based compensation expense related to share-based awards and employee stock purchase plan			6,089				6,089
Repurchases of common stock	$ (8)		(90,481)				(90,489)
Repurchases of common stock (in shares)	(8,009,272)
Net income					38,801		38,801
Balance at Mar. 31, 2022	$ 155		1,350,268		(832,640)		517,783
Balance (in shares) at Mar. 31, 2022	155,115,155
Balance at Dec. 31, 2021	$ 162	$ (110,217)	1,543,357	$ 66,167	(937,608)	$ (44,050)	$ 605,911
Balance (in shares) at Dec. 31, 2021	162,036,461						162,036,461
Increase (Decrease) in Stockholders' Equity (Deficit)
Repurchases of common stock							$ (123,400)
Repurchases of common stock (in shares)							(10,800,000)
Net income							$ 126,198
Balance at Sep. 30, 2022	$ 153		1,336,153		(745,243)		$ 591,063
Balance (in shares) at Sep. 30, 2022	153,319,417						153,319,417
Balance at Mar. 31, 2022	$ 155		1,350,268		(832,640)		$ 517,783
Balance (in shares) at Mar. 31, 2022	155,115,155
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan	$ 1		4,314				4,315
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	818,235
Share-based compensation expense related to share-based awards and employee stock purchase plan			6,601				6,601
Repurchases of common stock	$ (3)		(32,893)				(32,896)
Repurchases of common stock (in shares)	(2,757,081)
Net income					37,080		37,080
Balance at Jun. 30, 2022	$ 153		1,328,290		(795,560)		532,883
Balance (in shares) at Jun. 30, 2022	153,176,309
Increase (Decrease) in Stockholders' Equity (Deficit)
Issuance of common stock related to share-based awards and employee stock purchase plan			796				796
Issuance of common stock related to share-based awards and employee stock purchase plan (in shares)	143,108
Share-based compensation expense related to share-based awards and employee stock purchase plan			7,067				7,067
Net income					50,317		50,317
Balance at Sep. 30, 2022	$ 153		$ 1,336,153		$ (745,243)		$ 591,063
Balance (in shares) at Sep. 30, 2022	153,319,417						153,319,417