Accumulated Other Comprehensive (Loss) Income (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrealized gains on available-for-sale securities
Federal income tax expense		$ (2,417)	$ (1,127)	$ (1,219)
NET INCOME		4,350	4,871	$ 4,378
Reclassification out of Accumulated Other Comprehensive Income (Loss) | Accumulated Net Unrealized Investment Gain (Loss)
Unrealized gains on available-for-sale securities
Investment securities available-for-sale gains, net	[1]	7	466
Federal income tax expense	[1]	(3)	(158)
NET INCOME	[1]	$ 4	$ 308

[1] Amounts in parentheses indicate debits to net income.