Commitments and Contingencies (Off-Balance Sheet Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Contract amounts	$ 9,330,583	$ 9,852,367
Letters of Credit [Member]
Loss Contingencies [Line Items]
Contract amounts	$ 499,963	$ 481,910