Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Held-to-Maturity: Fair Value	$ 4,002,122	$ 4,253,637
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, authorized (in shares)	500,000,000	500,000,000
Common Stock, issued (in shares)	58,765,907	58,755,465
Common Stock, outstanding (in shares)	39,729,941	39,753,138
Treasury Stock (in shares)	19,035,966	19,002,327
Series A Preferred Stock [Member]
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, authorized (in shares)	180,000	180,000
Preferred Stock, issued (in shares)	180,000	180,000
Preferred Stock, outstanding (in shares)	180,000	180,000
Series B Preferred Stock [Member]
Preferred Stock, par value (in dollars per share)	$ 0.01
Preferred Stock, authorized (in shares)	165,000
Preferred Stock, issued (in shares)	165,000
Preferred Stock, outstanding (in shares)	165,000