Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments to Extend Credit
Letters of credit	$ 2,290,000	$ 2,220,000
Allowance for Unfunded Credit Commitments	26,200	27,500
Other Commitments
Total	452,451
Accrued Expenses And Other Liabilities
Other Commitments
Total	452,500	309,600
Standby Letters of Credit
Commitments to Extend Credit
Letters of credit	2,270,000	2,140,000
Commercial Letters Of Credit
Commitments to Extend Credit
Letters of credit	21,600	78,900
Loans sold or securitized with recourse | Single Family Residential and Multi-Family Residential | Loans Sold or Securitized with Recourse
Commitments to Extend Credit
Allowance for Unfunded Credit Commitments	$ 37	$ 29