Restrictions on Cash, Securities, Bank Dividends, Loans or Advances (Details)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Regulated Operations [Abstract]
Reserve requirements with federal reserve	$ 0	$ 0
FHLB stock	8,272,000	12,252,000
FHLB required investment amount	$ 5,984,000	$ 11,594,000
Regulatory restrictions on payments of dividends, excess surplus ratio	10
Amount transferable loans maximum	$ 169,716,000
Line of credit collateralized by cash	3,000
Company borrowings	$ 0