Derivative and Hedging Activities, Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Inputs, Level 2 | Interest rate-related instruments — customer and mirror | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	$ 34,184	$ 83,626
Derivatives (trading liabilities)	173,955	26,231
Fair Value, Inputs, Level 2 | Interest rate lock commitments (mortgage) | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	4,190	5,490
Derivatives (trading liabilities)	3,764	5,441
Fair Value, Inputs, Level 2 | Commodity contracts | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	1,264
Derivatives (trading liabilities)	0	1,248
Fair Value, Inputs, Level 3
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset		30
Derivatives (trading liabilities)	113	0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	0	30
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	986	2,617
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	986	2,617
Fair Value, Inputs, Level 3 | Interest Rate Lock Commitments and Forward Commitments Total | Fair Value, Measurements, Recurring
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative Asset	1,033	2,647
Asset
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other assets), fair value	39,407	93,026
Less: Legally enforceable master netting agreements	4,369	2,143
Less: Cash collateral pledged/received	22,756	1,313
Derivative Asset	12,281	89,570
Liability
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivatives (trading and other liabilities), fair value	177,833	32,921
Less: Legally enforceable master netting agreements	4,369	2,143
Less: Cash collateral pledged/received	0	11,357
Derivatives (trading liabilities)	173,464	19,421
Not designated as hedging instruments | Asset | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,116,939	3,874,781
Not designated as hedging instruments | Asset | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	509,404	490,057
Not designated as hedging instruments | Asset | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,894
Not designated as hedging instruments | Asset | Interest Rate Lock Commitments [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	76,824	133,990
Not designated as hedging instruments | Liability | Interest rate-related instruments — customer and mirror
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	4,116,939	3,874,781
Not designated as hedging instruments | Liability | Interest rate lock commitments (mortgage)
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	498,773	478,745
Not designated as hedging instruments | Liability | Commodity contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	0	3,910
Not designated as hedging instruments | Liability | Interest Rate Lock Commitments [Member]
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional Amount	$ 105,000	$ 245,016