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Investment Securities - Non-Marketable Securities Included in Other Assets (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($)	Apr. 27, 2023	Dec. 31, 2022 USD ($) 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	$ 2,400,000			$ 2,500,000
Low income housing tax credits and other tax benefits	151,000
Low income housing amortization expense	127,000
Unfunded commitments for low income housing tax credit funds	347,000
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	$ 3,800,000			3,500,000
Visa Inc. | Visa Inc. Class B common stock
Schedule of Equity Method Investments [Line Items]
Conversion rate on common stock	1.5991
Asset Derivatives
Schedule of Equity Method Investments [Line Items]
Federal home loan bank stock	$ 16,700,000			$ 16,700,000

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