Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Held-to-Maturity: Fair Value	$ 4,253,637	$ 4,615,393
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
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)	58,755,465	58,733,625
Common Stock, outstanding (in shares)	39,753,138	39,835,750
Treasury Stock (in shares)	19,002,327	18,897,875