Investment Securities - Investments Classified by Contractual Maturity Date (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Amortized Cost
Debt securities, available-for-sale, amortized cost, within one year	$ 1,770,000
Debt securities, available-for-sale, amortized cost, one to five years	23,490,000
Debt securities, available-for-sale, amortized cost, five to ten years	45,435,000
Debt securities, available-for-sale, amortized cost, after ten years	117,488,000
Debt securities, available for sale, amortized cost	188,183,000
Debt securities, available for sale, amortized cost, mortgage backed securities -GSE residential	110,502,000
Fair Value
Debt securities, available-for-sale, fair value, within one year	1,767,000
Debt securities, available-for-sale, fair value, one to five years	22,463,000
Debt securities, available-for-sale, fair value, five to ten years	41,006,000
Debt securities, available-for-sale, fair value, after ten years	91,033,000
Debt securities, available for sale, fair value	156,269,000
Debt securities, available for sale, fair value, mortgage backed securities -GSE residential	94,180,000
Amortized Cost
Held-to-Maturity, amortized cost, within one year	725,000
Held-to-Maturity, amortized cost, one to five years	987,000
Held-to-Maturity, amortized cost, five to ten years	450,000
Held-to-Maturity, amortized cost, after ten years	610,000
Debt securities, held-to-maturity, amortized cost	2,772,000
Held-to-Maturity, amortized cost, mortgage backed securities -GSE residential	0
Fair Value
Held-to-Maturity, fair value, within one year	725,000
Held-to-Maturity, fair value, one to five years	988,000
Held-to-Maturity, fair value, five to ten years	450,000
Held-to-Maturity, fair value, after ten years	561,000
Held-to-Maturity, fair value	2,724,000
Held-to-Maturity, fair value, mortgage backed securities -GSE residential	0
Debt securities, available-for-sale, and equity securities, amortized cost	298,685,000
Debt securities, available-for-sale, and equity securities, fair value	250,449,000
Debt securities, held-to-maturity, amortized cost	2,771,714	$ 3,497,913
Debt securities, held-to-maturity, fair value	$ 2,724,000	$ 3,421,000