CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Interest-bearing deposits in banks and other financial institutions, collateral	$ 3,730	$ 4,270
Investment securities, available-for-sale, amortized cost	4,290,823	4,504,342
Investment securities, held-to-maturity, allowance for credit losses, fair value	7	8
Investment securities, held-to-maturity, allowance for credit losses	958,969	985,931
Allowance for credit losses on loans and leases	$ 197,490	$ 186,126
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, issued (in shares)	76,246,771	76,095,094
Treasury stock, shares (in shares)	17,213,764	15,557,263