Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Securities available for sale	$ 571,314	$ 635,946
Securities held to maturity, fair value	1,543,554	1,664,674
Loans held for sale at fair value	76,980	78,170
Loan receivable includes at fair value	47,318	0
Net of allowance for credit losses on loans	$ 83,301	$ 84,386
Stockholders' Equity
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	45,893,172	45,767,166
Common stock, shares outstanding	45,893,172	45,767,166
Preferred stock, dividend rate (as a percent)	7.00%	7.00%
Preferred stock, shares authorized	5,000,000	5,000,000
6% Series B Preferred Stock
Stockholders' Equity
Preferred stock, dividend rate (as a percent)	6.00%	6.00%
Preferred stock liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized	0	125,000
Preferred stock, shares issued	0	125,000
Preferred stock, shares outstanding	0	125,000
Depositary shares	5,000,000	5,000,000
6% Series C Preferred Stock
Stockholders' Equity
Preferred stock, dividend rate (as a percent)	6.00%	6.00%
Preferred stock liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized	200,000	200,000
Preferred stock, shares issued	196,181	196,181
Preferred stock, shares outstanding	196,181	196,181
Depositary shares	7,847,233	7,847,233
8.25% Series D Preferred Stock
Stockholders' Equity
Preferred stock, dividend rate (as a percent)	8.25%	8.25%
Preferred stock liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued	142,500	142,500
Preferred stock, shares outstanding	142,500	142,500
Depositary shares	5,700,000	5,700,000
7.625% Series E Preferred Stock
Stockholders' Equity
Preferred stock, dividend rate (as a percent)	7.625%	7.625%
Preferred stock liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized	230,000	230,000
Preferred stock, shares issued	230,000	230,000
Preferred stock, shares outstanding	230,000	230,000
Depositary shares	9,200,000	9,200,000