Derivative and Hedging Activities Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	$ (1,144,561)	$ (833,837)
Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	5,439	16,163
Long-Term Debt [Member] | Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(552,168)	(248,145)
Long-Term Debt [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	(2,168)	1,855
Federal Home Loan Bank Advances [Member] | Forward commitments to sell residential mortgage loans
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(592,393)	(585,692)
Federal Home Loan Bank Advances [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	7,607	$ 14,308
Designated as Hedging Instrument
Balance Sheet Recording of Fair Value Hedge [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	$ 1,000