UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Earnings
Balance beginning of period (in shares) at Dec. 31, 2021		54,419,000
Balance beginning of period at Dec. 31, 2021	$ 1,513,887	$ 544	$ 536,377	$ (196,012)	$ 1,172,978
Increase (Decrease) in Stockholders' Equity
Net income	45,314				45,314
Other comprehensive (loss) income	33,849			33,849
Stock-based compensation	5,712		5,712
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		36,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(1,831)		(1,831)
Repurchases of common stock (in shares)		(41,000)
Repurchases of common stock	(3,694)		(3,694)
Balance ending of period (in shares) at Mar. 31, 2022		54,414,000
Balance ending of period at Mar. 31, 2022	1,593,237	$ 544	536,564	(162,163)	1,218,292
Balance beginning of period (in shares) at Dec. 31, 2021		54,419,000
Balance beginning of period at Dec. 31, 2021	1,513,887	$ 544	536,377	(196,012)	1,172,978
Increase (Decrease) in Stockholders' Equity
Net income	329,270
Other comprehensive (loss) income	24,445
Balance ending of period (in shares) at Sep. 30, 2022		54,070,000
Balance ending of period at Sep. 30, 2022	1,837,581	$ 541	506,359	(171,567)	1,502,248
Balance beginning of period (in shares) at Mar. 31, 2022		54,414,000
Balance beginning of period at Mar. 31, 2022	1,593,237	$ 544	536,564	(162,163)	1,218,292
Increase (Decrease) in Stockholders' Equity
Net income	148,157				148,157
Other comprehensive (loss) income	(539)			(539)
Stock-based compensation	6,835		6,835
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		31,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(740)		(740)
Repurchases of common stock (in shares)		(335,000)
Repurchases of common stock	(30,000)	$ (3)	(29,997)
Balance ending of period (in shares) at Jun. 30, 2022		54,110,000
Balance ending of period at Jun. 30, 2022	1,716,950	$ 541	512,662	(162,702)	1,366,449
Increase (Decrease) in Stockholders' Equity
Net income	135,799				135,799
Other comprehensive (loss) income	(8,865)			(8,865)
Stock-based compensation	7,828		7,828
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		68,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(3,643)	$ 1	(3,644)
Repurchases of common stock (in shares)		(108,000)
Repurchases of common stock	(10,488)	$ (1)	(10,487)
Balance ending of period (in shares) at Sep. 30, 2022		54,070,000
Balance ending of period at Sep. 30, 2022	$ 1,837,581	$ 541	506,359	(171,567)	1,502,248
Balance beginning of period (in shares) at Dec. 31, 2022	54,064,797	54,065,000
Balance beginning of period at Dec. 31, 2022	$ 1,922,322	$ 541	504,240	(167,181)	1,584,722
Increase (Decrease) in Stockholders' Equity
Net income	72,401				72,401
Other comprehensive (loss) income	(14,346)			(14,346)
Stock-based compensation	6,018		6,018
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		49,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(3,351)		(3,351)
Repurchases of common stock (in shares)		(22,000)
Repurchases of common stock	(3,000)		(3,000)
Balance ending of period (in shares) at Mar. 31, 2023		54,092,000
Balance ending of period at Mar. 31, 2023	$ 1,980,044	$ 541	503,907	(181,527)	1,657,123
Balance beginning of period (in shares) at Dec. 31, 2022	54,064,797	54,065,000
Balance beginning of period at Dec. 31, 2022	$ 1,922,322	$ 541	504,240	(167,181)	1,584,722
Increase (Decrease) in Stockholders' Equity
Net income	279,507
Other comprehensive (loss) income	$ (1,958)
Balance ending of period (in shares) at Sep. 30, 2023	54,102,982	54,103,000
Balance ending of period at Sep. 30, 2023	$ 2,185,794	$ 541	490,163	(169,139)	1,864,229
Balance beginning of period (in shares) at Mar. 31, 2023		54,092,000
Balance beginning of period at Mar. 31, 2023	1,980,044	$ 541	503,907	(181,527)	1,657,123
Increase (Decrease) in Stockholders' Equity
Net income	115,766				115,766
Other comprehensive (loss) income	15,561			15,561
Stock-based compensation	4,500		4,500
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		34,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(984)		(984)
Repurchases of common stock (in shares)		(36,000)
Repurchases of common stock	(5,001)		(5,001)
Balance ending of period (in shares) at Jun. 30, 2023		54,090,000
Balance ending of period at Jun. 30, 2023	2,109,886	$ 541	502,422	(165,966)	1,772,889
Increase (Decrease) in Stockholders' Equity
Net income	91,340				91,340
Other comprehensive (loss) income	(3,173)			(3,173)
Stock-based compensation	4,291		4,291
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		71,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(6,551)	$ 1	(6,552)
Repurchases of common stock (in shares)		(58,000)
Repurchases of common stock	$ (9,999)	$ (1)	(9,998)
Balance ending of period (in shares) at Sep. 30, 2023	54,102,982	54,103,000
Balance ending of period at Sep. 30, 2023	$ 2,185,794	$ 541	$ 490,163	$ (169,139)	$ 1,864,229