UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ 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
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	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
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)
Repurchases of common stock	(26,546)	$ (3)	(26,543)
Balance ending of period (in shares) at Mar. 31, 2021		54,551
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, 2021		54,419
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	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
Issuance of common stock for restricted share vesting, net of employee tax withholdings	(1,831)		(1,831)
Repurchases of common stock (in shares)		(41)
Repurchases of common stock	(3,694)		(3,694)
Balance ending of period (in shares) at Mar. 31, 2022		54,414
Balance ending of period at Mar. 31, 2022	$ 1,593,237	$ 544	$ 536,564	$ (162,163)	$ 1,218,292