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, 2020		54,773,000
Balance beginning of period at Dec. 31, 2020	$ 1,341,551	$ 548	$ 582,749	$ (211,477)	$ 969,731
Increase (Decrease) in Stockholders' Equity
Net income	21,736				21,736
Other comprehensive income (loss)	11,948			11,948
Stock-based compensation	3,480		3,480
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		78,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(3,719)	$ 1	(3,720)
Repurchases of common stock (in shares)		(300,000)
Repurchases of common stock	(26,546)	$ (3)	(26,543)
Balance ending of period (in shares) at Mar. 31, 2021		54,551,000
Balance ending of period at Mar. 31, 2021	1,348,450	$ 546	555,966	(199,529)	991,467
Balance beginning of period (in shares) at Dec. 31, 2020		54,773,000
Balance beginning of period at Dec. 31, 2020	1,341,551	$ 548	582,749	(211,477)	969,731
Increase (Decrease) in Stockholders' Equity
Net income	154,254
Other comprehensive income (loss)	10,761
Balance ending of period (in shares) at Sep. 30, 2021		54,410,000
Balance ending of period at Sep. 30, 2021	1,463,560	$ 544	539,747	(200,716)	1,123,985
Balance beginning of period (in shares) at Mar. 31, 2021		54,551,000
Balance beginning of period at Mar. 31, 2021	1,348,450	$ 546	555,966	(199,529)	991,467
Increase (Decrease) in Stockholders' Equity
Net income	67,075				67,075
Other comprehensive income (loss)	10,640			10,640
Stock-based compensation	3,305		3,305
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		42,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(1,020)		(1,020)
Repurchases of common stock (in shares)		(200,000)
Repurchases of common stock	(18,863)	$ (2)	(18,861)
Balance ending of period (in shares) at Jun. 30, 2021		54,393,000
Balance ending of period at Jun. 30, 2021	1,409,587	$ 544	539,390	(188,889)	1,058,542
Increase (Decrease) in Stockholders' Equity
Net income	65,443				65,443
Other comprehensive income (loss)	(11,827)			(11,827)
Stock-based compensation	6,001		6,001
Issuance of common stock for restricted share vesting, net of employee tax withholdings (in shares)		50,000
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(2,644)		(2,644)
Repurchases of common stock (in shares)		(33,000)
Repurchases of common stock	(3,000)	$ 0	(3,000)
Balance ending of period (in shares) at Sep. 30, 2021		54,410,000
Balance ending of period at Sep. 30, 2021	$ 1,463,560	$ 544	539,747	(200,716)	1,123,985
Balance beginning of period (in shares) at Dec. 31, 2021	54,419,321	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 income (loss)	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	54,419,321	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 income (loss)	$ 24,445
Balance ending of period (in shares) at Sep. 30, 2022	54,070,197	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 income (loss)	(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 income (loss)	(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	54,070,197	54,070,000
Balance ending of period at Sep. 30, 2022	$ 1,837,581	$ 541	$ 506,359	$ (171,567)	$ 1,502,248