CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Preferred Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Cumulative Effect Period Of Adoption Adjusted Balance [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive (Loss) Income, net of tax [Member]
Balance at beginning of period at Dec. 31, 2019		$ 36,104	$ 22,210	$ 960,342		$ 1,221,817			$ (19,170)	$ 6,764
Balance at beginning of period (ASU 2016-13) at Dec. 31, 2019							$ (62,322)	$ 1,159,495
Redemption of Series A through E Preferred Stock		0
Common stock repurchases (See Note 17)									(200)
Common stock issued stock-based compensation plan			93	(93)					0
Stock-based compensation				5,117
Restricted stock forfeited				19					(19)
Net income	$ 102,273					102,273
Dividends on common stock (2022 - $0.46 per share; 2021 - $0.31per share; 2020 - $0.20 per share)						(43,771)
Dividends on preferred stock						(2,676)
Issuance costs of Series A through E Preferred Stock redeemed					$ 0
Excess of redemption value over carrying value of Series A through E Preferred Stock redeemed	0					0
Other comprehensive (loss) income, net of tax	48,691									48,691
Balance at end of period at Dec. 31, 2020	2,275,179	36,104	22,303	965,385		1,215,321			(19,389)	55,455
Redemption of Series A through E Preferred Stock		(36,104)
Common stock repurchases (See Note 17)									(216,522)
Common stock issued stock-based compensation plan			63	(63)					0
Stock-based compensation				5,460
Restricted stock forfeited				531					(531)
Net income	281,025					281,025
Dividends on common stock (2022 - $0.46 per share; 2021 - $0.31per share; 2020 - $0.20 per share)						(65,364)
Dividends on preferred stock						(2,453)
Issuance costs of Series A through E Preferred Stock redeemed					1,234
Excess of redemption value over carrying value of Series A through E Preferred Stock redeemed	(1,234)					(1,234)
Other comprehensive (loss) income, net of tax	(139,454)									(139,454)
Balance at end of period at Dec. 31, 2021	2,101,767	0	22,366	972,547		1,427,295			(236,442)	(83,999)
Redemption of Series A through E Preferred Stock		0
Common stock repurchases (See Note 17)									(277,769)
Common stock issued stock-based compensation plan			0	(7,365)					7,365
Stock-based compensation				5,407
Restricted stock forfeited				133					(133)
Net income	305,072					305,072
Dividends on common stock (2022 - $0.46 per share; 2021 - $0.31per share; 2020 - $0.20 per share)						(88,158)
Dividends on preferred stock						0
Issuance costs of Series A through E Preferred Stock redeemed					$ 0
Excess of redemption value over carrying value of Series A through E Preferred Stock redeemed	0					0
Other comprehensive (loss) income, net of tax	(720,779)									(720,779)
Balance at end of period at Dec. 31, 2022	$ 1,325,540	$ 0	$ 22,366	$ 970,722		$ 1,644,209			$ (506,979)	$ (804,778)