Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	$ 202,250	$ 209,809
Other investment securities:
Mutual fund - Community Reinvestment Act ("CRA") qualified	3,400	3,300
Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	46,332	49,764
Residential collateralized mortgage obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	150,131	160,045
Municipal securities-tax exempt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	5,787
Fair Value, Measurements, Recurring
Other investment securities:
Mutual fund - Community Reinvestment Act ("CRA") qualified	3,370	3,330
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	46,332	49,764
Fair Value, Measurements, Recurring | Residential collateralized mortgage obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	150,131	160,045
Fair Value, Measurements, Recurring | Municipal securities-tax exempt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	5,787
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)
Other investment securities:
Mutual fund - Community Reinvestment Act ("CRA") qualified	3,370	3,330
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Residential collateralized mortgage obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Municipal securities-tax exempt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Other investment securities:
Mutual fund - Community Reinvestment Act ("CRA") qualified	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	46,332	49,764
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential collateralized mortgage obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	150,131	160,045
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities-tax exempt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	5,787
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Other investment securities:
Mutual fund - Community Reinvestment Act ("CRA") qualified	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Residential collateralized mortgage obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	0	$ 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Municipal securities-tax exempt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale debt securities, at fair value	$ 0