v3.26.1
CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Restricted cash $ 14,760 $ 14,760
Available-for-sale investment securities, includes pledged securities that can be sold or repledged of $318,329 and $319,478, respectively (cost of $3,237,809 and $3,148,728, respectively) 2,957,963 2,875,341
Available for sale, amortized cost 3,237,809 3,148,728
Held-to-maturity securities, includes pledged securities that can be sold or repledged of $9,090 and $0, respectively (fair value of $1,372,481 and $1,370,464, respectively) 1,478,386 1,454,166
Held-to-maturity securities, fair value $ 1,372,481 $ 1,370,464
Shareholders' equity:    
Preferred stock, par value (in dollars per share) $ 1 $ 1
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued 0 0
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized 75,000,000 75,000,000
Common stock, shares issued 55,067,544 54,907,426
Treasury stock, shares at cost 2,469,140 2,225,209
Shares held by deferred compensation arrangements 79,939 94,479
Asset Pledged as Collateral with Right [Member]    
Assets:    
Available-for-sale investment securities, includes pledged securities that can be sold or repledged of $318,329 and $319,478, respectively (cost of $3,237,809 and $3,148,728, respectively) $ 318,329 $ 319,478
Held-to-maturity securities, includes pledged securities that can be sold or repledged of $9,090 and $0, respectively (fair value of $1,372,481 and $1,370,464, respectively) $ 9,090 $ 0