Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Gain on sale and net write-up of equity securities	$ 5,690	$ 0
Mortgage Servicing Rights (MSR) Impairment (Recovery)	(22,348)	$ (12,231)
Mortgage servicing rights(e)			$ 57,259
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
Gain on sale and net write-up of equity securities	5,690
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans(b)	29,558		69,917
Provision for credit losses	5,010		(3,045)
Gain on sale and net write-up of equity securities	5,690
Investments, Fair Value Disclosure	19,134
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	1,639		7,345
OREO(c)	$ 3,534		$ 21,299