Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Held-to-Maturity: Fair Value	$ 4,668,074	$ 4,646,619
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)	58,728,796	58,554,669
Common Stock, outstanding (in shares)	40,011,473	40,253,193
Treasury Stock (in shares)	18,717,323	18,301,476