CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income	Total
Balances at Dec. 31, 2020	$ 290	$ 342,354	$ 595,932	$ (111,173)	$ 1,190	$ 828,593
Balances (in shares) at Dec. 31, 2020	29,045,000
Balances, Treasury stock (in shares) at Dec. 31, 2020				3,657,000
Increase (Decrease) in Stockholders' Equity
Net income			213,521			213,521
Other comprehensive income (loss), net of tax					2,509	2,509
Issuance of common stock under share-based compensation plans	$ 4	(4)
Issuance of common stock under share-based compensation plans (in shares)	315,000
Shares withheld for employee tax remittance on share-based compensation		(10,743)				(10,743)
Share-based compensation expense		11,426				11,426
Purchase of treasury stock				$ (83,100)		(83,100)
Purchase of treasury stock (in shares)				836,000
Forward contract for accelerated share repurchase		(25,000)				(25,000)
Dividends declared on common stock			(8,139)			(8,139)
Balances at Dec. 31, 2021	$ 294	318,033	801,314	$ (194,273)	3,699	929,067
Balances (in shares) at Dec. 31, 2021	29,360,000
Balances, Treasury stock (in shares) at Dec. 31, 2021				4,493,000
Increase (Decrease) in Stockholders' Equity
Net income			298,209			298,209
Other comprehensive income (loss), net of tax					3,404	3,404
Issuance of common stock under share-based compensation plans	$ 4	(4)
Issuance of common stock under share-based compensation plans (in shares)	399,000
Shares withheld for employee tax remittance on share-based compensation		(16,222)				(16,222)
Share-based compensation expense		12,775				12,775
Purchase of treasury stock				$ (65,002)		(65,002)
Purchase of treasury stock (in shares)				822,000
Forward contract for accelerated share repurchase		25,000		$ (25,000)
Forward contract for accelerated share repurchase (in shares)				214,000
Dividends declared on common stock			(10,830)			(10,830)
Balances at Dec. 31, 2022	$ 298	339,582	1,088,693	$ (284,275)	7,103	$ 1,151,401
Balances (in shares) at Dec. 31, 2022	29,759,000
Balances, Treasury stock (in shares) at Dec. 31, 2022				5,529,000		5,529,383
Increase (Decrease) in Stockholders' Equity
Net income			195,433			$ 195,433
Other comprehensive income (loss), net of tax					(2,779)	(2,779)
Issuance of common stock under share-based compensation plans	$ 2	(2)
Issuance of common stock under share-based compensation plans (in shares)	265,000
Shares withheld for employee tax remittance on share-based compensation		(10,311)				(10,311)
Share-based compensation expense		11,692				11,692
Purchase of treasury stock				$ (91,531)		(91,531)
Purchase of treasury stock (in shares)				931,000
Dividends declared on common stock			(11,542)			(11,542)
Balances at Dec. 31, 2023	$ 300	$ 340,961	$ 1,272,584	$ (375,806)	$ 4,324	$ 1,242,363
Balances (in shares) at Dec. 31, 2023	30,024,000
Balances, Treasury stock (in shares) at Dec. 31, 2023				6,460,000		6,460,137