Federal Income Taxes (Details 1) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Gross deferred tax assets:
Allowance for loan and other real estate losses	$ 961,000	$ 1,655,000
Deferred loan origination cost - net	234,000	303,000
Impairment loss on securities	29,000	48,000
Deferred compensation	668,000	1,006,000
AMT credit carryforward	904,000	904,000
Unrealized loss on available-for-sale securities	475,000	1,499,000
Other items	333,000	540,000
Total gross deferred tax assets	3,604,000	5,955,000
Gross deferred tax liabilities:
Premises and equipment	(362,000)	(566,000)
Other items	(325,000)	(524,000)
Total net deferred tax liabilities	(687,000)	(1,090,000)
Net deferred tax asset	$ 2,917,000	$ 4,865,000