Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Mortgage Servicing Rights (MSR) Impairment (Recovery)	$ (19,400)	$ (10,239)
Mortgage servicing rights(e)			$ 57,259
Equity securities	14,000		14,000
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,039		18,352
Possible Liquidity Issues [Member]
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Financing Receivable, Troubled Debt Restructuring	0		7,000
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity securities	13,538		13,542
Equity Securities, FV-NI and without Readily Determinable Fair Value	13,538		13,542
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans(a)	35,906		69,917
Provision for credit losses	(2,260)		(3,045)
Mortgage Servicing Rights (MSR) Impairment (Recovery)			16,186
Mortgage servicing rights(e)			57,259
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount	496		7,345
OREO(b)	$ 2,098		$ 21,299