Fair Value of Financial Instruments - Fair Value, by Balance Sheet Grouping (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments available-for-sale, at fair value	$ 217,778,000	$ 168,948,000
Investments held-to-maturity, at amortized cost	2,444,000	2,432,000
FHLB stock	7,512,000	5,465,000
Derivative fair value asset	10,500,000
Brokered deposits	124,886,000	0
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash on hand and in banks	7,722,000	7,246,000
Interest-earning deposits	16,598,000	66,145,000
Investments available-for-sale, at fair value	39,186,000	3,767,000
Investments held-to-maturity, at amortized cost	0	0
Loans receivable, net	0	0
FHLB stock	0	0
Accrued interest receivable	0	0
Derivative fair value asset	0	0
Deposits	782,600,000	863,347,000
Certificates of deposit, retail	0	0
Advances from the FHLB	0	0
Accrued interest payable	0	0
Brokered deposits
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash on hand and in banks	0	0
Interest-earning deposits	0	0
Investments available-for-sale, at fair value	178,592,000	165,181,000
Investments held-to-maturity, at amortized cost	2,444,000	2,432,000
Loans receivable, net	0	0
FHLB stock	7,512,000	5,465,000
Accrued interest receivable	6,513,000	5,285,000
Derivative fair value asset	10,485,000	1,491,000
Deposits	0	0
Certificates of deposit, retail	254,004,000	295,929,000
Advances from the FHLB	144,999,000	95,003,000
Accrued interest payable	328,000	112,000
Brokered deposits	124,843,000
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash on hand and in banks	0	0
Interest-earning deposits	0	0
Investments available-for-sale, at fair value	0	0
Investments held-to-maturity, at amortized cost	0	0
Loans receivable, net	1,120,403,000	1,109,887,000
FHLB stock	0	0
Accrued interest receivable	0	0
Derivative fair value asset	0	0
Deposits	0	0
Certificates of deposit, retail	0	0
Advances from the FHLB	0	0
Accrued interest payable	0	0
Brokered deposits
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash on hand and in banks	7,722,000	7,246,000
Interest-earning deposits	16,598,000	66,145,000
Investments available-for-sale, at fair value	217,778,000	168,948,000
Investments held-to-maturity, at amortized cost	2,444,000	2,432,000
Loans receivable, net	1,167,083,000	1,103,461,000
FHLB stock	7,512,000	5,465,000
Accrued interest receivable	6,513,000	5,285,000
Derivative fair value asset	10,485,000	1,491,000
Deposits	782,600,000	863,347,000
Certificates of deposit, retail	262,554,000	294,127,000
Advances from the FHLB	145,000,000	95,000,000
Accrued interest payable	328,000	112,000
Brokered deposits	124,886,000
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash on hand and in banks	7,722,000	7,246,000
Interest-earning deposits	16,598,000	66,145,000
Investments available-for-sale, at fair value	217,778,000	168,948,000
Investments held-to-maturity, at amortized cost	2,444,000	2,432,000
Loans receivable, net	1,120,403,000	1,109,887,000
FHLB stock	7,512,000	5,465,000
Accrued interest receivable	6,513,000	5,285,000
Derivative fair value asset	10,485,000	1,491,000
Deposits	782,600,000	863,347,000
Certificates of deposit, retail	254,004,000	295,929,000
Advances from the FHLB	144,999,000	95,003,000
Accrued interest payable	328,000	$ 112,000
Brokered deposits	$ 124,843,000