Borrowings - Narrative (Details)		1 Months Ended			3 Months Ended	12 Months Ended
	Jun. 29, 2018 USD ($) investor	Sep. 30, 2016 USD ($)	Sep. 30, 2015	Jun. 30, 2014 USD ($)	Jun. 30, 2009 quarter	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2004 USD ($)	Dec. 31, 2003 USD ($)	Dec. 21, 2022 USD ($)	Jun. 22, 2022	Dec. 22, 2016 USD ($)
Debt Instrument [Line Items]
Borrowings						$ 115,193,000	$ 120,700,000
Advances from federal home loan banks, total						85,000,000	90,000,000
Federal home loan bank, advances, maturities summary, fixed rate, total						$ 85,000,000
Federal home loan bank, advances, activity for year, average interest rate for year						3.69%
Federal home loan bank, advances, general debt obligations, disclosures, collateral pledged						$ 233,500,000
Federal home loan bank, advances, general debt obligations, amount of available, unused funds						67,200,000
Debt issuance costs, net						640,000
Amortization of debt issuance costs						38,000	111,000	$ 112,000
Number of investors | investor	2
Subordinated debt, net						9,840,000	9,811,000
Interest on subordinated debt						1,066,000	933,000	991,000
Long-term debt, gross						115,833,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Financial instruments, owned, at fair value						19,900,000
Short-term debt						0
Federal Reserve Bank Advances | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Financial instruments, owned, at fair value						13,700,000
Correspondent Bank Agreement | Zions Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						24,500,000	5,000,000
Long-term line of credit, total						0	0
Interest expense, debt, total						0	0	0
Federal Home Loan Bank Borrowings
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						2,000,000
Long-term line of credit, total						0	0
Interest expense, debt, total						$ 3,500,000	3,000,000	2,700,000
Minimum
Debt Instrument [Line Items]
Federal home loan bank, advances, branch of FHLB bank, interest rate						2.40%
Maximum
Debt Instrument [Line Items]
Federal home loan bank, advances, branch of FHLB bank, interest rate						4.37%
FHLB Borrowings
Debt Instrument [Line Items]
Borrowings						$ 85,000,000
Long term debt, additional available amount						67,200,000
Debt issuance costs, net						0
Long-term debt, gross						$ 85,000,000
FHLB Borrowings | Minimum
Debt Instrument [Line Items]
Debt instrument, term (in years)						6 days
FHLB Borrowings | Maximum
Debt Instrument [Line Items]
Debt instrument, term (in years)						1 year 8 months 15 days
Senior Notes
Debt Instrument [Line Items]
Borrowings						$ 11,640,000
Debt instrument, face amount											$ 12,000,000		$ 12,000,000
Debt instrument, interest rate, stated											8.50%		7.00%
Debt issuance costs, net						360,000					$ 360,000
Interest expense, long-term debt						866,000	913,000	915,000
Amortization of debt issuance costs						0	73,000	75,000
Long-term debt, gross						12,000,000
Senior Notes | July 1, 2022 until September 30, 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated												7.25%
Senior Notes | After September 30, 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated												7.50%
Senior Notes | Accrued Expenses and Other Liabilities
Debt Instrument [Line Items]
Interest payable						28,000	23,000
Subordinated notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 10,000,000
Debt instrument, interest rate, stated	6.25%
Subordinated notes | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.325%
Subordinated Notes
Debt Instrument [Line Items]
Borrowings						9,840,000
Interest expense, debt, total						654,000	654,000	654,000
Debt issuance costs, net	$ 291,000					160,000	189,000
Long-term debt, gross						10,000,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Borrowings						8,128,000
Interest expense, debt, total		$ 700,000		$ 1,700,000
Debt issuance costs, net						120,000	129,000
Amortization of debt issuance costs						9,000	8,000	9,000
Interest payable						$ 9,000	4,000
Subordinated debt, net										$ 8,000,000
Payments of debt issuance costs									$ 240,000	$ 240,000
Excess tier one risk based capital to risk weighted assets										0.25
Debt, weighted average interest rate						7.79%
Number of consecutive quarters for interest deferment | quarter					20
Interest on subordinated debt						$ 412,000	279,000	337,000
Long-term debt, gross						$ 8,248,000
Junior Subordinated Debt | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						3.15%
Note Payable
Debt Instrument [Line Items]
Borrowings						$ 585,000
Debt instrument, term (in years)			9 years
Interest expense, debt, total						12,000	15,000	$ 19,000
Debt instrument, face amount		$ 2,000,000
Debt instrument, interest rate, stated		1.75%
Debt issuance costs, net						0
Long-term debt, gross						$ 585,000	$ 791,000
Debt instrument, periodic payment terms, balloon payment to be paid		$ 234,000