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			37,820,000
Beginning balance at Dec. 31, 2021	$ 1,529,116	$ 71,988	$ 398	$ (73,528)	$ 1,018,799	$ 492,682	$ 18,777
Net income	92,842					92,842
Other comprehensive income (loss)	(127,258)						(127,258)
Common stock dividends	(16,100)					(16,100)
Preferred stock dividends	(2,167)					(2,167)
Repurchase of common shares (in shares)			(700,000)
Repurchase of common stock	(32,923)		$ (7)		(18,867)	(14,049)
Issuance under equity compensation plans, net (in shares)			86,000
Issuance under equity compensation plans, net	96		$ 1		684	(589)
Share-based compensation	3,806				3,806
Retirement of treasury stock	0		$ (20)	73,528	(27,738)	(45,770)
Preferred stock, ending balance (in shares) at Jun. 30, 2022		75,000
Common stock, ending balance (in shares) at Jun. 30, 2022			37,206,000
Ending balance at Jun. 30, 2022	1,447,412	$ 71,988	$ 372	0	976,684	506,849	(108,481)
Preferred stock, beginning balance (in shares) at Mar. 31, 2022		75,000
Common stock, beginning balance (in shares) at Mar. 31, 2022			37,516,000
Beginning balance at Mar. 31, 2022	1,473,177	$ 71,988	$ 395	(73,528)	1,010,446	523,136	(59,260)
Net income	45,149					45,149
Other comprehensive income (loss)	(49,221)						(49,221)
Common stock dividends	(8,185)					(8,185)
Preferred stock dividends	(938)					(938)
Repurchase of common shares (in shares)			(349,000)
Repurchase of common stock	(15,949)		$ (3)		(9,410)	(6,536)
Issuance under equity compensation plans, net (in shares)			39,000
Issuance under equity compensation plans, net	1,259				1,266	(7)
Share-based compensation	2,120				2,120
Retirement of treasury stock	0		$ (20)	73,528	(27,738)	(45,770)
Preferred stock, ending balance (in shares) at Jun. 30, 2022		75,000
Common stock, ending balance (in shares) at Jun. 30, 2022			37,206,000
Ending balance at Jun. 30, 2022	$ 1,447,412	$ 71,988	$ 372	$ 0	976,684	506,849	(108,481)
Preferred stock, beginning balance (in shares) at Dec. 31, 2022	75,000	75,000
Common stock, beginning balance (in shares) at Dec. 31, 2022	37,253,292		37,253,000
Beginning balance at Dec. 31, 2022	$ 1,522,263	$ 71,988	$ 373		982,660	597,574	(130,332)
Net income	104,865					104,865
Other comprehensive income (loss)	6,867						6,867
Common stock dividends	(18,668)					(18,668)
Preferred stock dividends	(1,875)					(1,875)
Issuance under equity compensation plans, net (in shares)			106,000
Issuance under equity compensation plans, net	(353)		$ 1		561	(915)
Share-based compensation	$ 5,134				5,134
Preferred stock, ending balance (in shares) at Jun. 30, 2023	75,000	75,000
Common stock, ending balance (in shares) at Jun. 30, 2023	37,359,527		37,359,000
Ending balance at Jun. 30, 2023	$ 1,618,233	$ 71,988	$ 374		988,355	680,981	(123,465)
Preferred stock, beginning balance (in shares) at Mar. 31, 2023		75,000
Common stock, beginning balance (in shares) at Mar. 31, 2023			37,311,000
Beginning balance at Mar. 31, 2023	1,592,820	$ 71,988	$ 373		984,281	642,153	(105,975)
Net income	49,127					49,127
Other comprehensive income (loss)	(17,490)						(17,490)
Common stock dividends	(9,340)					(9,340)
Preferred stock dividends	(937)					(937)
Issuance under equity compensation plans, net (in shares)			48,000
Issuance under equity compensation plans, net	1,388		$ 1		1,409	(22)
Share-based compensation	$ 2,665				2,665
Preferred stock, ending balance (in shares) at Jun. 30, 2023	75,000	75,000
Common stock, ending balance (in shares) at Jun. 30, 2023	37,359,527		37,359,000
Ending balance at Jun. 30, 2023	$ 1,618,233	$ 71,988	$ 374		$ 988,355	$ 680,981	$ (123,465)