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Investment Securities - Additional information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) position	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) position	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Investment Securities:
Proceeds from sales of investment securities - available for sale	$ 0	$ 960,000	$ 0	$ 960,000
Gross investment gains		$ 84,000		$ 84,000
Book value of securities available for sale and held to maturity	$ 122,240,000		$ 122,240,000		$ 122,574,000
Number of positions | position	376		376
Premium percentage on mortgage backed securities purchased			100.90%
Consolidated investment securities portfolio modified, years			52 months		41 months 15 days
Standard & Poor's, AAA Rating
INVESTMENT SECURITIES
Portfolio rated	52.20%		52.20%		47.10%
Securities rated below A
INVESTMENT SECURITIES
Portfolio rated	13.30%		13.30%		14.70%
Maximum
Investment Securities:
Consolidated investment securities portfolio modified, years			60 months

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