CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Interest-bearing deposits in banks and other financial institutions, collateral	$ 7,160	$ 5,050
Amortized cost	5,903,550	5,249,882
Allowance for credit losses	4	4
Held-to-maturity securities, fair value	85,754	94,131
Allowance for credit losses	$ 136,330	$ 94,507
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)	75,832,292	57,695,676
Treasury stock, shares (in shares)	11,097,424	10,086,936