Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Preferred stock, beginning balance (in shares) at Dec. 31, 2021		75,000
Common stock, beginning balance (in shares) at Dec. 31, 2021			37,819,000
Beginning balance at Dec. 31, 2021	$ 1,529,116	$ 71,988	$ 398	$ (73,528)	$ 1,018,799	$ 492,682	$ 18,777
Net income	47,693					47,693
Other comprehensive income (loss)	(78,037)						(78,037)
Common stock dividends	(7,915)					(7,915)
Preferred stock dividends	(1,229)					(1,229)
Repurchase of common shares (in shares)			(351,000)
Repurchase of common stock	(16,974)		$ (4)		(9,457)	(7,513)
Issuance under equity compensation plans, net (in shares)			48,000
Issuance under equity compensation plans, net	(1,163)		$ 1		(582)	(582)
Share-based compensation	1,686				1,686
Preferred stock, ending balance (in shares) at Mar. 31, 2022		75,000
Common stock, ending balance (in shares) at Mar. 31, 2022			37,516,000
Ending balance at Mar. 31, 2022	$ 1,473,177	$ 71,988	$ 395	$ (73,528)	1,010,446	523,136	(59,260)
Preferred stock, beginning balance (in shares) at Dec. 31, 2022	75,000	75,000
Common stock, beginning balance (in shares) at Dec. 31, 2022			37,253,000
Beginning balance at Dec. 31, 2022	$ 1,522,263	$ 71,988	$ 373		982,660	597,574	(130,332)
Net income	55,738					55,738
Other comprehensive income (loss)	24,357						24,357
Common stock dividends	(9,328)					(9,328)
Preferred stock dividends	(938)					(938)
Issuance under equity compensation plans, net (in shares)			58,000
Issuance under equity compensation plans, net	(1,741)				(848)	(893)
Share-based compensation	$ 2,469				2,469
Preferred stock, ending balance (in shares) at Mar. 31, 2023	75,000	75,000
Common stock, ending balance (in shares) at Mar. 31, 2023			37,311,000
Ending balance at Mar. 31, 2023	$ 1,592,820	$ 71,988	$ 373		$ 984,281	$ 642,153	$ (105,975)