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, 2023	Dec. 31, 2022
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity Securities without Readily Determinable Fair Value, Amount	$ 29,236	$ 19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	35,937	25,216
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity Securities without Readily Determinable Fair Value, Amount	19,236	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,236	19,225
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans	56,506	23,584
Provision for credit losses	28,926	4,405
Equity Securities without Readily Determinable Fair Value, Amount		19,134
Equity Securities, FV-NI and without Readily Determinable Fair Value		5,690
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	1,124	971
OREO(b)	$ 1,315	$ 2,196