Securities - Summary of Debt Securities - Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 98,598	$ 100,446
Gross Unrealized Gains	62	159
Gross Unrealized Losses	(2,444)	(1,255)
Fair Value	96,216	99,350
U.S. Treasury and federal agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,538	4,541
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(111)	(69)
Fair Value	4,427	4,472
U.S. government sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,126	14,136
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(387)	(212)
Fair Value	13,739	13,926
U.S. agency mortgage-backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	23,957	20,904
Gross Unrealized Gains	4	7
Gross Unrealized Losses	(495)	(153)
Fair Value	23,466	20,758
U.S. agency collateralized mortgage obligations: residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,204	22,607
Gross Unrealized Gains	33	25
Gross Unrealized Losses	(904)	(708)
Fair Value	21,333	21,924
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	25,265	29,249
Gross Unrealized Gains	10	87
Gross Unrealized Losses	(480)	(96)
Fair Value	24,795	29,240
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8,508	9,009
Gross Unrealized Gains	15	38
Gross Unrealized Losses	(67)	(17)
Fair Value	$ 8,456	$ 9,030

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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-Publisher FASB
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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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