CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Balance Beginning of Period, Shares (in shares) at Dec. 31, 2020			89,251,000
Balance, Beginning of Period at Dec. 31, 2020	$ 1,514,867	$ (66,046)	$ 893	$ (235,141)	$ 1,290,908	$ (63,274)	$ (74,059)	$ 532,266	$ (2,772)
Balance, Beginning of Period, Treasury Stock, Shares (in shares) at Dec. 31, 2020				(4,914,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	45,394							45,394
Other comprehensive income (loss), net of tax	30,432						30,432
Issuance of common stock through employee stock purchase plan (in shares)			18,000
Issuance of common stock through employee stock purchase plan	1,127				1,127
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes (in shares)			137,000	15,000
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes	(2,541)		$ 1	$ 680	(3,222)
Share-based compensation	6,098				6,098
Balance End of Period, Shares (in shares) at Mar. 31, 2021			89,406,000
Balance, End of Period at Mar. 31, 2021	1,529,331		$ 894	$ (234,461)	1,231,637		(43,627)	574,888
Balance, End of Period, Treasury Stock, Shares (in shares) at Mar. 31, 2021				(4,899,000)
Balance Beginning of Period, Shares (in shares) at Dec. 31, 2021			89,600,000
Balance, Beginning of Period at Dec. 31, 2021	$ 1,684,804		$ 896	$ (234,448)	1,264,943		(45,155)	698,568
Balance, Beginning of Period, Treasury Stock, Shares (in shares) at Dec. 31, 2021	(4,899,000)			(4,899,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 32,901							32,901
Other comprehensive income (loss), net of tax	24,130						24,130
Issuance of common stock through employee stock purchase plan (in shares)			17,000
Issuance of common stock through employee stock purchase plan	1,078				1,078
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes (in shares)			339,000	14,000
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes	(9,040)		$ 4	$ 714	(9,758)
Share-based compensation	6,324				6,324
Accelerated shares repurchased (shares)				(1,938,000)
Accelerated shares repurchased	(125,000)			$ (129,152)	4,152
Balance End of Period, Shares (in shares) at Mar. 31, 2022			89,956,000
Balance, End of Period at Mar. 31, 2022	$ 1,615,197		$ 900	$ (362,886)	$ 1,266,739		$ (21,025)	$ 731,469
Balance, End of Period, Treasury Stock, Shares (in shares) at Mar. 31, 2022	(6,823,000)			(6,823,000)