Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2023		69,863
Beginning balance (in shares) at Dec. 31, 2023			1,339
Beginning balance at Dec. 31, 2023	$ 815,892	$ 699	$ (75,000)	$ 757,727	$ 133,503	$ (1,037)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	131,066				131,066
Other comprehensive income (loss)	(141)					(141)
Stock option exercises and employee stock plan purchases (in shares)		86
Stock option exercises and employee stock plan purchases	2,757	$ 1		2,756
Vesting of restricted stock units (in shares)		988
Vesting of restricted stock units		$ 9		(9)
Shares withheld to cover taxes (in shares)		(302)
Shares withheld to cover taxes	(19,418)	$ (3)		(19,415)
Stock-based compensation	15,384			15,384
Ending balance (in shares) at Mar. 31, 2024		70,635
Ending balance (in shares) at Mar. 31, 2024			1,339
Ending balance at Mar. 31, 2024	945,540	$ 706	$ (75,000)	756,443	264,569	(1,178)
Beginning balance (in shares) at Dec. 31, 2023		69,863
Beginning balance (in shares) at Dec. 31, 2023			1,339
Beginning balance at Dec. 31, 2023	815,892	$ 699	$ (75,000)	757,727	133,503	(1,037)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	324,232
Ending balance (in shares) at Sep. 30, 2024		70,854
Ending balance (in shares) at Sep. 30, 2024			1,339
Ending balance at Sep. 30, 2024	1,179,708	$ 709	$ (75,000)	797,430	457,735	(1,166)
Beginning balance (in shares) at Mar. 31, 2024		70,635
Beginning balance (in shares) at Mar. 31, 2024			1,339
Beginning balance at Mar. 31, 2024	945,540	$ 706	$ (75,000)	756,443	264,569	(1,178)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	62,073				62,073
Other comprehensive income (loss)	(32)					(32)
Stock option exercises and employee stock plan purchases (in shares)		68
Stock option exercises and employee stock plan purchases	1,549	$ 1		1,548
Vesting of restricted stock units (in shares)		58
Vesting of restricted stock units		$ 1		(1)
Shares withheld to cover taxes (in shares)		(11)
Shares withheld to cover taxes	(924)			(924)
Stock-based compensation	18,479			18,479
Ending balance (in shares) at Jun. 30, 2024		70,750
Ending balance (in shares) at Jun. 30, 2024			1,339
Ending balance at Jun. 30, 2024	1,026,685	$ 708	$ (75,000)	775,545	326,642	(1,210)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	131,093				131,093
Other comprehensive income (loss)	44					44
Stock option exercises and employee stock plan purchases (in shares)		76
Stock option exercises and employee stock plan purchases	2,832	$ 1		2,831
Vesting of restricted stock units (in shares)		40
Shares withheld to cover taxes (in shares)		(12)
Shares withheld to cover taxes	(1,312)			(1,312)
Stock-based compensation	20,366			20,366
Ending balance (in shares) at Sep. 30, 2024		70,854
Ending balance (in shares) at Sep. 30, 2024			1,339
Ending balance at Sep. 30, 2024	$ 1,179,708	$ 709	$ (75,000)	797,430	457,735	(1,166)
Beginning balance (in shares) at Dec. 31, 2024	70,905	70,905
Beginning balance (in shares) at Dec. 31, 2024	2,455		2,455
Beginning balance at Dec. 31, 2024	$ 1,088,011	$ 709	$ (175,000)	817,972	445,945	(1,615)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	72,945				72,945
Other comprehensive income (loss)	(143)					(143)
Stock option exercises and employee stock plan purchases (in shares)		107
Stock option exercises and employee stock plan purchases	5,869	$ 1		5,868
Vesting of restricted stock units (in shares)		845
Vesting of restricted stock units		$ 8		(8)
Shares withheld to cover taxes (in shares)		(250)
Shares withheld to cover taxes	(23,686)	$ (2)		(23,684)
Stock-based compensation	21,198			21,198
Ending balance (in shares) at Mar. 31, 2025		71,607
Ending balance (in shares) at Mar. 31, 2025			2,455
Ending balance at Mar. 31, 2025	$ 1,164,194	$ 716	$ (175,000)	821,346	518,890	(1,758)
Beginning balance (in shares) at Dec. 31, 2024	70,905	70,905
Beginning balance (in shares) at Dec. 31, 2024	2,455		2,455
Beginning balance at Dec. 31, 2024	$ 1,088,011	$ 709	$ (175,000)	817,972	445,945	(1,615)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 179,471
Ending balance (in shares) at Sep. 30, 2025	71,770	71,770
Ending balance (in shares) at Sep. 30, 2025	5,471		5,471
Ending balance at Sep. 30, 2025	$ 1,119,206	$ 718	$ (376,456)	871,193	625,416	(1,665)
Beginning balance (in shares) at Mar. 31, 2025		71,607
Beginning balance (in shares) at Mar. 31, 2025			2,455
Beginning balance at Mar. 31, 2025	1,164,194	$ 716	$ (175,000)	821,346	518,890	(1,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,755				78,755
Other comprehensive income (loss)	276					276
Stock option exercises and employee stock plan purchases (in shares)		56
Stock option exercises and employee stock plan purchases	2,445	$ 1		2,444
Vesting of restricted stock units (in shares)		48
Shares withheld to cover taxes (in shares)		(9)
Shares withheld to cover taxes	(963)			(963)
Repurchase of common stock, including excise tax (in shares)			1,260
Repurchase of common stock, including excise tax	(100,245)		$ (100,000)	(245)
Stock-based compensation	22,321			22,321
Ending balance (in shares) at Jun. 30, 2025		71,702
Ending balance (in shares) at Jun. 30, 2025			3,715
Ending balance at Jun. 30, 2025	1,166,783	$ 717	$ (275,000)	844,903	597,645	(1,482)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,771				27,771
Other comprehensive income (loss)	(183)					(183)
Stock option exercises and employee stock plan purchases (in shares)		41
Stock option exercises and employee stock plan purchases	1,885	$ 1		1,884
Vesting of restricted stock units (in shares)		40
Shares withheld to cover taxes (in shares)		(13)
Shares withheld to cover taxes	(591)			(591)
Repurchase of common stock, including excise tax (in shares)			1,756
Repurchase of common stock, including excise tax	(100,960)		$ (101,456)	496
Stock-based compensation	$ 24,501			24,501
Ending balance (in shares) at Sep. 30, 2025	71,770	71,770
Ending balance (in shares) at Sep. 30, 2025	5,471		5,471
Ending balance at Sep. 30, 2025	$ 1,119,206	$ 718	$ (376,456)	$ 871,193	$ 625,416	$ (1,665)