Basis of Presentation - Restatement on Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Other assets	$ 168,872	$ 179,084
Total assets	8,479,734	8,422,946
Other liabilities	140,437	161,349
Total liabilities	7,807,389	7,745,789
Retained earnings	544,672	547,507
Total stockholders' equity	672,345	677,157	$ 675,813	$ 679,628
Total liabilities and stockholders' equity	8,479,734	$ 8,422,946
As Reported
Other assets	168,259
Total assets	8,479,121
Other liabilities	138,710
Total liabilities	7,805,662
Retained earnings	545,786
Total stockholders' equity	673,459
Total liabilities and stockholders' equity	8,479,121
Adjustments
Other assets	613
Total assets	613
Other liabilities	1,727
Total liabilities	1,727
Retained earnings	(1,114)
Total stockholders' equity	(1,114)
Total liabilities and stockholders' equity	$ 613