Securities - Narrative (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) Security	Mar. 31, 2021 USD ($) Security	Dec. 31, 2021 USD ($) Security
Schedule Of Available For Sale Securities [Line Items]
Accrued interest receivable on available-for-sale securities | $	$ 2,000,000.0		$ 1,900,000
Other than temporary impairment losses | $	0
Collateral Pledged
Schedule Of Available For Sale Securities [Line Items]
Debt securities, available-for-sale, restricted | $	$ 0		$ 0
Mortgage-backed securities
Schedule Of Available For Sale Securities [Line Items]
Number of investment securities sold | Security	9	2
Proceeds from sale of investment securities | $	$ 13,900,000	$ 6,500,000
Number of securities in unrealized loss portions for longer than 12 months | Security	58		31
Number of securities in unrealized loss positions for less than 12 months | Security	190		142
Municipal bonds
Schedule Of Available For Sale Securities [Line Items]
Number of securities in unrealized loss portions for longer than 12 months | Security	1		1