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Investment Securities - Non-Marketable Securities Included in Other Assets (Details)	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)	Oct. 27, 2022	Dec. 31, 2021 USD ($) shares
Schedule of Equity Method Investments [Line Items]
Federal home loan bank stock, par value (in usd per share) | $ / shares		$ 100
Investments in low income housing tax credit funds		$ 2,600,000			$ 3,000,000
Low income housing tax credits and other tax benefits		475,000
Low income housing amortization expense		400,000
Unfunded commitments for low income housing tax credit funds		392,000
Subsequent event
Schedule of Equity Method Investments [Line Items]
Federal home loan bank, dividend rate percentage				7.00%
Low-income housing tax credit investment
Schedule of Equity Method Investments [Line Items]
Impairment losses		$ 0	$ 0
Visa Inc. Class B common stock
Schedule of Equity Method Investments [Line Items]
Number of shares of securities carried at cost (in shares) | shares		10,439			10,439
Carrying value of securities carried at cost		$ 0			$ 0
Fair value of Class B common stock		$ 3,000,000			$ 3,700,000
Visa Inc. | Visa Inc. Class B common stock
Schedule of Equity Method Investments [Line Items]
Conversion rate on common stock	1,618.1000	1.6059
Asset Derivatives
Schedule of Equity Method Investments [Line Items]
Federal home loan bank stock		$ 16,700,000

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