CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2022	$ 734,426	$ 2,236,869	$ (619,862)	$ (3,802)	$ 2,347,631
Balance (in shares) at Dec. 31, 2022	82,593,000
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2022			(31,994,000)
Increase (Decrease) in Stockholders' Equity
Net income		34,342			34,342
Exercise of common stock options and stock issued under the long-term incentive plan	$ 57				$ 57
Exercise of common stock options and stock issued under the long-term incentive plan (in shares)	130,000				3,848
Employee income tax paid on vested equity awards			$ (585)		$ (585)
Employee income tax paid on vested equity awards (in shares)			(32,000)
Sale of common stock under employee stock purchase plan	$ 2,754				2,754
Sale of common stock under employee stock purchase plan (in shares)	117,000
Stock based compensation expense	$ 17,125				17,125
Treasury stock purchases and related excise tax			$ (291,949)		(291,949)
Treasury stock purchases and related excise tax (in shares)			(10,589,000)
Net unrealized appreciation on marketable securities, net of tax				4,127	4,127
Balance at Dec. 31, 2023	$ 754,362	2,271,211	$ (912,396)	325	2,113,502
Balance (in shares) at Dec. 31, 2023	82,840,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2023			(42,615,000)
Increase (Decrease) in Stockholders' Equity
Net income		322,962			322,962
Stock issued under the long-term incentive plan (in shares)	270,000
Employee income tax paid on vested equity awards			$ (6,930)		(6,930)
Employee income tax paid on vested equity awards (in shares)			(117,000)
Sale of common stock under employee stock purchase plan	$ 2,864				2,864
Sale of common stock under employee stock purchase plan (in shares)	48,000
Issuance of common stock upon warrant exercise, net (in Shares)	481,000
Stock based compensation expense	$ 19,864				19,864
Treasury stock purchases and related excise tax			$ (43,324)		(43,324)
Treasury stock purchases and related excise tax (in shares)			(578,000)
Net unrealized appreciation on marketable securities, net of tax				(157)	(157)
Balance at Dec. 31, 2024	$ 777,090	2,594,173	$ (962,650)	168	$ 2,408,781
Balance (in shares) at Dec. 31, 2024	83,639,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2024			(43,310,000)		43,310,324
Increase (Decrease) in Stockholders' Equity
Net income		428,334			$ 428,334
Stock issued under the long-term incentive plan (in shares)	605,000
Employee income tax paid on vested equity awards			$ (27,242)		(27,242)
Employee income tax paid on vested equity awards (in shares)			(240,000)
Sale of common stock under employee stock purchase plan	$ 2,651				2,651
Sale of common stock under employee stock purchase plan (in shares)	27,000
Stock based compensation expense	$ 18,729				18,729
Treasury stock purchases and related excise tax			$ (84,930)		(84,930)
Treasury stock purchases and related excise tax (in shares)			(849,000)
Net unrealized appreciation on marketable securities, net of tax				110	110
Balance at Dec. 31, 2025	$ 798,470	$ 3,022,507	$ (1,074,822)	$ 278	$ 2,746,433
Balance (in shares) at Dec. 31, 2025	84,271,000
Treasury Stock, Shares, Ending Balance at Dec. 31, 2025			(44,399,000)		44,399,241