Condensed Consolidated Statements of Financial Condition (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities held to maturity, fair value	$ 437,880	$ 536,651
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	93,705,120	94,233,152
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	113,914,902	113,914,902
Treasury stock, shares (in shares)	20,209,782	19,681,750