Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Preferred stock, beginning balance (in shares) at Dec. 31, 2022		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	149,530				149,530
Other comprehensive income (loss)	(37,497)					(37,497)
Common stock dividends	(28,014)				(28,014)
Preferred stock dividends	(2,813)				(2,813)
Issuance under equity compensation plans, net (in shares)			132,000
Issuance under equity compensation plans, net	602		$ 1	1,575	(974)
Share-based compensation	7,809			7,809
Preferred stock, ending balance (in shares) at Sep. 30, 2023		75,000
Common stock, ending balance (in shares) at Sep. 30, 2023			37,385,000
Ending balance at Sep. 30, 2023	$ 1,611,880	$ 71,988	$ 374	992,044	715,303	(167,829)
Cash dividends paid on common shares (in dollars per share)	$ 0.75
Preferred stock, beginning balance (in shares) at Jun. 30, 2023		75,000
Common stock, beginning balance (in shares) at Jun. 30, 2023			37,359,000
Beginning balance at Jun. 30, 2023	$ 1,618,233	$ 71,988	$ 374	988,355	680,981	(123,465)
Net income	44,665				44,665
Other comprehensive income (loss)	(44,364)					(44,364)
Common stock dividends	(9,346)				(9,346)
Preferred stock dividends	(938)				(938)
Issuance under equity compensation plans, net (in shares)			26,000
Issuance under equity compensation plans, net	955			1,014	(59)
Share-based compensation	2,675			2,675
Preferred stock, ending balance (in shares) at Sep. 30, 2023		75,000
Common stock, ending balance (in shares) at Sep. 30, 2023			37,385,000
Ending balance at Sep. 30, 2023	$ 1,611,880	$ 71,988	$ 374	992,044	715,303	(167,829)
Cash dividends paid on common shares (in dollars per share)	$ 0.25
Preferred stock, beginning balance (in shares) at Dec. 31, 2023	75,000	75,000
Common stock, beginning balance (in shares) at Dec. 31, 2023	37,416,028		37,416,000
Beginning balance at Dec. 31, 2023	$ 1,716,068	$ 71,988	$ 374	995,208	749,513	(101,015)
Net income	136,432				136,432
Other comprehensive income (loss)	22,180					22,180
Common stock dividends	(29,171)				(29,171)
Preferred stock dividends	(2,813)				(2,813)
Repurchase of common shares (in shares)			(420,000)
Repurchase of common stock	(18,385)		$ (4)	(11,233)	(7,148)
Issuance under equity compensation plans, net (in shares)			188,000
Issuance under equity compensation plans, net	122		$ 2	1,089	(969)
Share-based compensation	$ 7,578			7,578
Preferred stock, ending balance (in shares) at Sep. 30, 2024	75,000	75,000
Common stock, ending balance (in shares) at Sep. 30, 2024	37,183,784		37,184,000
Ending balance at Sep. 30, 2024	$ 1,832,011	$ 71,988	$ 372	992,642	845,844	(78,835)
Cash dividends paid on common shares (in dollars per share)	$ 0.78
Common stock, beginning balance (in shares) at Jun. 30, 2024			37,344,000
Beginning balance at Jun. 30, 2024	$ 1,755,273	$ 71,988	$ 373	994,116	810,935	(122,139)
Net income	50,585				50,585
Other comprehensive income (loss)	43,304					43,304
Common stock dividends	(10,065)				(10,065)
Preferred stock dividends	(938)				(938)
Repurchase of common shares (in shares)			(195,000)
Repurchase of common stock	(9,789)		$ (2)	(5,239)	(4,548)
Issuance under equity compensation plans, net (in shares)			35,000
Issuance under equity compensation plans, net	1,077		$ 1	1,201	(125)
Share-based compensation	$ 2,564			2,564
Preferred stock, ending balance (in shares) at Sep. 30, 2024	75,000	75,000
Common stock, ending balance (in shares) at Sep. 30, 2024	37,183,784		37,184,000
Ending balance at Sep. 30, 2024	$ 1,832,011	$ 71,988	$ 372	$ 992,642	$ 845,844	$ (78,835)
Cash dividends paid on common shares (in dollars per share)	$ 0.27