Fair Value - Unfunded Loan and Lease Commitments and Letters of Credit (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Unfunded loan and lease commitments and letters of credit
Aggregate commitments to extend credit, standby letters of credit and commercial letters of credit		$ 7,000,000
Fair Value, Inputs, Level 3 [Member]
Unfunded loan and lease commitments and letters of credit
Aggregate commitments to extend credit, standby letters of credit and commercial letters of credit	$ 7,100,000	7,000,000
Estimated fair value of unfunded loan and lease commitments and letters of credit	$ 50,900	$ 48,500