Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	$ 2,742,025	$ 4,332,015
Equity Securities with Readily Determined Fair Value	6,000	5,000
Mortgage servicing rights, net(a)	77,351	57,158
Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	109,378	122,957
Equity Securities with Readily Determined Fair Value	5,991	4,810
Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,632,647	4,209,058
Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Derivative Assets		30
Mortgage servicing rights, net(a)	77,351	57,259
Designated as Hedging Instrument [Member] | Fair Value, Inputs, Level 2
Liabilities, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Liability at Fair Value	1,260	0
Designated as Hedging Instrument [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Asset at Fair Value	4,349	0
US Treasury Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	109,378	122,957
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	109,378	122,957
Agency Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	13,532	14,897
Agency Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	13,532	14,897
US States and Political Subdivisions Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	230,714	400,457
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	230,714	400,457
Residential Related Securities | FNMA/FHLMC [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	1,604,610	2,691,879
Residential Related Securities | Government National Mortgage Association (GNMA)
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	497,596	67,780
Residential Related Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | FNMA/FHLMC [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	1,604,610	2,691,879
Residential Related Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Government National Mortgage Association (GNMA)
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	497,596	67,780
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	0	329,724
Mortgage-Backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	0	329,724
Commercial Mortgage-Backed Securities [Member] | FNMA/FHLMC [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	17,142	350,623
Commercial Mortgage-Backed Securities [Member] | Government National Mortgage Association (GNMA)
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	110,462	166,799
Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | FNMA/FHLMC [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	17,142	350,623
Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Government National Mortgage Association (GNMA)
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	110,462	166,799
FFELP asset backed securities
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	151,191	177,325
FFELP asset backed securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	151,191	177,325
US Government-sponsored Enterprises Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	4,477	6,580
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	4,477	6,580
Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,922	2,994
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,922	2,994
Total AFS investment securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	109,378	122,957
Total AFS investment securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Debt Securities, Available-for-sale	2,632,647	4,209,058
Other Debt And Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Equity Securities with Readily Determined Fair Value	5,991	4,810
Residential loans held for sale | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	20,383	136,638
Interest rate-related and other instruments not designated as hedging instruments(b) | Not designated as hedging instruments | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	62,401	83,626
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability	251,398	26,231
Foreign currency exchange forwards(b) | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability	1,801	5,441
Foreign currency exchange forwards(b) | Not designated as hedging instruments | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	1,922	5,490
Commodity contracts(b) | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability	0	1,248
Commodity contracts(b) | Not designated as hedging instruments | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	0	1,264
Interest rate lock commitments to originate residential mortgage loans held for sale | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	86	2,617
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability	46	0
Forward commitments to sell residential mortgage loans | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	0	30
Forward commitments to sell residential mortgage loans | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	0	30
Forward commitments to sell residential mortgage loans | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability	$ 46	$ 0