Securities - Summary of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 102,026	$ 102,587
Gross Unrealized Gains	414	450
Gross Unrealized Losses	(1,273)	(1,477)
Securities available for sale	101,167	101,560
U.S. Treasury
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,541	4,550
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(69)	(50)
Securities available for sale	4,472	4,500
U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,136	9,186
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(212)	(188)
Securities available for sale	13,926	8,998
U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,904	25,790
Gross Unrealized Gains	7	32
Gross Unrealized Losses	(153)	(196)
Securities available for sale	20,758	25,626
U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,607	25,367
Gross Unrealized Gains	25	23
Gross Unrealized Losses	(708)	(684)
Securities available for sale	21,924	24,706
State and political subdivision
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	29,249	27,853
Gross Unrealized Gains	87	17
Gross Unrealized Losses	(96)	(262)
Securities available for sale	29,240	27,608
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,009	8,012
Gross Unrealized Gains	38	5
Gross Unrealized Losses	(17)	(85)
Securities available for sale	9,030	7,932
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,580	1,829
Gross Unrealized Gains	255	373
Gross Unrealized Losses	(18)	(12)
Securities available for sale	$ 1,817	$ 2,190

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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