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, 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
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock						(2,915)
Balances at Mar. 31, 2023	$ 298	340,481	1,157,061	$ (298,367)	6,386	1,205,859
Balances (in shares) at Mar. 31, 2023	29,809,000
Balances, Treasury stock (in shares) at Mar. 31, 2023				5,683,000
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
Increase (Decrease) in Stockholders' Equity
Net income			111,726			111,726
Other comprehensive income (loss), net of tax					(534)	(534)
Issuance of common stock under share-based compensation plans	$ 2	(2)
Issuance of common stock under share-based compensation plans (in shares)	249,000
Shares withheld for employee tax remittance on share-based compensation		(10,022)				(10,022)
Share-based compensation expense		5,839				5,839
Purchase of treasury stock				$ (41,240)		(41,240)
Purchase of treasury stock (in shares)				454,000
Dividends declared on common stock			(5,809)			(5,809)
Balances at Jun. 30, 2023	$ 300	335,397	1,194,610	$ (325,515)	6,569	1,211,361
Balances (in shares) at Jun. 30, 2023	30,008,000
Balances, Treasury stock (in shares) at Jun. 30, 2023				5,983,000
Balances at Mar. 31, 2023	$ 298	340,481	1,157,061	$ (298,367)	6,386	1,205,859
Balances (in shares) at Mar. 31, 2023	29,809,000
Balances, Treasury stock (in shares) at Mar. 31, 2023				5,683,000
Increase (Decrease) in Stockholders' Equity
Net income			40,443			40,443
Other comprehensive income (loss), net of tax					183	183
Issuance of common stock under share-based compensation plans	$ 2	(2)
Issuance of common stock under share-based compensation plans (in shares)	199,000
Shares withheld for employee tax remittance on share-based compensation		(8,432)				(8,432)
Share-based compensation expense		3,350				3,350
Purchase of treasury stock				$ (27,148)		(27,148)
Purchase of treasury stock (in shares)				300,000
Dividends declared on common stock			(2,894)			(2,894)
Balances at Jun. 30, 2023	$ 300	335,397	1,194,610	$ (325,515)	6,569	1,211,361
Balances (in shares) at Jun. 30, 2023	30,008,000
Balances, Treasury stock (in shares) at Jun. 30, 2023				5,983,000
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
Increase (Decrease) in Stockholders' Equity
Dividends declared on common stock						$ (2,828)
Balances at Mar. 31, 2024	$ 300	343,102	1,267,444	$ (391,458)	3,345	1,222,733
Balances (in shares) at Mar. 31, 2024	30,039,000
Balances, Treasury stock (in shares) at Mar. 31, 2024				6,581,000
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
Increase (Decrease) in Stockholders' Equity
Net income			44,612			$ 44,612
Other comprehensive income (loss), net of tax					(1,851)	(1,851)
Issuance of common stock under share-based compensation plans	$ 4	(4)
Issuance of common stock under share-based compensation plans (in shares)	376,000
Shares withheld for employee tax remittance on share-based compensation		(22,634)				(22,634)
Share-based compensation expense		6,322				6,322
Purchase of treasury stock				$ (31,627)		(31,627)
Purchase of treasury stock (in shares)				252,000
Dividends declared on common stock			(5,647)			(5,647)
Balances at Jun. 30, 2024	$ 304	324,645	1,311,549	$ (407,433)	2,473	$ 1,231,538
Balances (in shares) at Jun. 30, 2024	30,400,000
Balances, Treasury stock (in shares) at Jun. 30, 2024				6,712,000		6,711,805
Balances at Mar. 31, 2024	$ 300	343,102	1,267,444	$ (391,458)	3,345	$ 1,222,733
Balances (in shares) at Mar. 31, 2024	30,039,000
Balances, Treasury stock (in shares) at Mar. 31, 2024				6,581,000
Increase (Decrease) in Stockholders' Equity
Net income			46,924			46,924
Other comprehensive income (loss), net of tax					(872)	(872)
Issuance of common stock under share-based compensation plans	$ 4	(4)
Issuance of common stock under share-based compensation plans (in shares)	361,000
Shares withheld for employee tax remittance on share-based compensation		(21,886)				(21,886)
Share-based compensation expense		3,433				3,433
Purchase of treasury stock				$ (15,975)		(15,975)
Purchase of treasury stock (in shares)				131,000
Dividends declared on common stock			(2,819)			(2,819)
Balances at Jun. 30, 2024	$ 304	$ 324,645	$ 1,311,549	$ (407,433)	$ 2,473	$ 1,231,538
Balances (in shares) at Jun. 30, 2024	30,400,000
Balances, Treasury stock (in shares) at Jun. 30, 2024				6,712,000		6,711,805