CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Interest-bearing deposits in banks and other financial institutions, collateral	$ 560	$ 1,701
Investment securities, available-for-sale, amortized cost	4,163,541	4,218,266
Investment securities, held-to-maturity, allowance for credit losses, fair value	6	7
Investment securities, held-to-maturity, allowance for credit losses	898,739	895,511
Allowance for credit losses on loans and leases	187,515	195,281
Other assets, net of allowance for credit losses	$ 567	$ 0
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)	76,327,551	76,264,211
Treasury stock, shares (in shares)	18,634,216	17,607,002