Income Taxes - Components of Deferred Tax Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets
Deferred compensation and supplemental retirement	$ 601,000	$ 499,000
Equity based compensation	90,000	165,000
Intangible assets	25,000	29,000
Depreciation	54,000	0
Lease liabilities	843,000	1,012,000
Unrealized loss on securities	278,000	263,000
Allowance for loan losses	1,784,000	1,840,000
Other, net	101,000	47,000
Total deferred tax assets	3,776,000	3,855,000
Deferred tax liabilities
Prepaid expenses	(160,000)	(171,000)
FHLB stock dividends	(40,000)	(40,000)
Depreciation	0	(39,000)
Mortgage servicing rights	(308,000)	(405,000)
Deferred loan costs	(594,000)	(652,000)
Right of use assets	(782,000)	(944,000)
Total deferred tax liabilities	(1,884,000)	(2,251,000)
Net deferred tax asset	1,892,000	1,604,000
Unrecognized tax benefits	0	0
Income tax penalties and interest expense	$ 0	$ 0