Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) portfolio branch $ / shares	Dec. 31, 2021 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Accounting Policies [Line Items]
Federal Home Loan Bank stock and Federal Reserve Bank stock	$ 6,500,000	$ 7,000,000
Impairment of investment in Federal Home Loan Bank stock and Federal Reserve Bank stock	0	0
Deferred tax assets, valuation allowance	$ 0			$ 1,900,000
Number of portfolio loan segments | portfolio	6
Deferred tax assets	$ 15,527,000	12,146,000
Unrecognized tax benefits	0	0		0	$ 1,220,000
Employee retention tax credit	0	2,900,000
Allowance for credit loss	10,310,000	9,905,000
Shareholders' equity	59,583,000	67,344,000		63,219,000	66,994,000
Accumulated Deficit
Accounting Policies [Line Items]
Shareholders' equity	$ (31,337,000)	(37,498,000)		$ (42,592,000)	$ (38,773,000)
Vesting Period One | Restricted Stock
Accounting Policies [Line Items]
Vesting period	3 years
Vesting Period Two | Restricted Stock
Accounting Policies [Line Items]
Vesting period	4 years
Vesting Period Three | Restricted Stock
Accounting Policies [Line Items]
Vesting period	5 years
Core Deposits
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	10 years
Minimum
Accounting Policies [Line Items]
Estimated useful lives	3 years
Minimum | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Accounting Policies [Line Items]
Allowance for credit loss			$ 2,000,000
Other liabilities			500,000
Minimum | Accumulated Deficit | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Accounting Policies [Line Items]
Shareholders' equity			1,800,000
Maximum
Accounting Policies [Line Items]
Estimated useful lives	40 years
Maximum | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Accounting Policies [Line Items]
Allowance for credit loss			4,000,000
Other liabilities			1,000,000
Maximum | Accumulated Deficit | Pro Forma | Cumulative Effect, Period of Adoption, Adjustment
Accounting Policies [Line Items]
Shareholders' equity			$ 3,700,000
Federal Home Loan Bank Certificates and Obligations (FHLB)
Accounting Policies [Line Items]
Stock value par value (in usd per share) | $ / shares	$ 100
SBA Loan Fund
Accounting Policies [Line Items]
Debt securities	$ 4,500,000	$ 4,500,000
Connecticut
Accounting Policies [Line Items]
Number of operating branches | branch	8
New York
Accounting Policies [Line Items]
Number of operating branches | branch	1