Borrowings - Narrative (Details)		1 Months Ended			3 Months Ended	12 Months Ended
	Jun. 29, 2018 USD ($) investor	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2009 quarter	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2003 USD ($)	Jul. 31, 2023 USD ($)	Dec. 21, 2022 USD ($)	Jun. 22, 2022	Dec. 22, 2016 USD ($)	Dec. 31, 2004
Debt Instrument [Line Items]
Borrowings						$ 201,105,000	$ 115,200,000
Advances from federal home loan banks, total						101,000,000	85,000,000
Federal home loan bank, advances, maturities summary, fixed rate, total						$ 101,000,000
Federal home loan bank, advances, activity for year, average interest rate for year						4.62%
Federal home loan bank, advances, general debt obligations, disclosures, collateral pledged						$ 263,400,000
Federal home loan bank, advances, general debt obligations, amount of available, unused funds						71,400,000
Debt issuance costs, net						519,000
Amortization of debt issuance costs						177,000	38,000	$ 111,000
Number of investors | investor	2
Subordinated debt, net						9,869,000	9,840,000
Interest on subordinated debt						1,481,000	1,066,000	933,000
Long-term debt, gross						201,624,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Interest expense, debt, total						48,000
Financial instruments, owned, at fair value						15,500,000
Short-term debt						0
Federal Reserve Bank Advances | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Financial instruments, owned, at fair value						11,400,000
FRBNY's Borrower-in-Custody
Debt Instrument [Line Items]
Interest expense, debt, total							0	0
Short-term debt						12,000,000	0	0
Bank Term Funding Program
Debt Instrument [Line Items]
Interest expense, debt, total						1,800,000
Short-term debt						$ 70,000,000
Debt instrument, interest rate, stated						4.89%
Bank Term Funding Program | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Financial instruments, owned, at fair value						$ 72,400,000				$ 80,000,000
Correspondent Bank Agreement | Zions Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						17,000,000	24,500,000
Long-term line of credit, total						0	0
Interest expense, debt, total						117,000	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						$ 4,200,000	3,500,000	3,000,000
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						5.56%
FHLB and FRB Borrowings
Debt Instrument [Line Items]
Borrowings						$ 171,000,000
Long term debt, additional available amount						71,400,000
Debt issuance costs, net						0
Long-term debt, gross						$ 171,000,000
FHLB and FRB Borrowings | Minimum
Debt Instrument [Line Items]
Debt instrument, term (in years)						2 days
FHLB and FRB Borrowings | Maximum
Debt Instrument [Line Items]
Debt instrument, term (in years)						9 months 18 days
Senior Notes
Debt Instrument [Line Items]
Borrowings						$ 11,723,000
Debt instrument, face amount											$ 12,000,000		$ 12,000,000
Debt instrument, interest rate, stated											8.50%		7.00%
Debt issuance costs, net						277,000					$ 360,000
Interest expense, long-term debt						1,200,000	866,000	913,000
Amortization of debt issuance costs						139,000	0	73,000
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						470,000	28,000
Subordinated notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 10,000,000
Debt instrument, interest rate, stated	6.25%
Subordinated notes | SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.325%
Subordinated Notes
Debt Instrument [Line Items]
Borrowings						9,869,000
Interest expense, debt, total						786,000	654,000	654,000
Debt issuance costs, net	$ 291,000					131,000	160,000
Long-term debt, gross						10,000,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Borrowings						8,137,000
Interest expense, debt, total		$ 700,000		$ 1,700,000
Debt issuance costs, net						111,000	120,000
Amortization of debt issuance costs						9,000	9,000	9,000
Interest payable						$ 12,000	9,000
Subordinated debt, net									$ 8,000,000
Payments of debt issuance costs									$ 240,000
Excess tier one risk based capital to risk weighted assets														0.25
Debt, weighted average interest rate						8.77%
Number of consecutive quarters for interest deferment | quarter					20
Interest on subordinated debt						$ 695,000	412,000	279,000
Long-term debt, gross						$ 8,248,000
Junior Subordinated Debt | SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						3.15%
Note Payable
Debt Instrument [Line Items]
Borrowings						$ 376,000
Debt instrument, term (in years)			9 years
Interest expense, debt, total						8,000	12,000	$ 15,000
Debt instrument, face amount			$ 2,000,000
Debt instrument, interest rate, stated			1.75%
Debt issuance costs, net						0
Long-term debt, gross						$ 376,000	$ 585,000
Debt instrument, periodic payment terms, balloon payment to be paid			$ 234,000