Commitments and Contingencies - Credit Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Credit Commitments [Line Items]
Credit Commitments	$ 3,732,181	$ 3,746,414
Unfunded Commitments to Extend Credit
Credit Commitments [Line Items]
Credit Commitments	3,582,980	3,592,872
Standby Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	133,397	129,512
Commercial Letters of Credit
Credit Commitments [Line Items]
Credit Commitments	$ 15,804	$ 24,030