Fair Value - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets:
Total securities available for sale	$ 187,469	$ 192,621
Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	44,245	52,998
Asset-backed securities
Assets:
Total securities available for sale	15,713	16,377
Other debt securities
Assets:
Total securities available for sale	11,844	5,407
Fair Value Measurements Recurring Basis
Assets:
Total securities available for sale	187,469	192,621
Liabilities:
Total derivatives	(1,086)	(1,559)
Fair Value Measurements Recurring Basis \| U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	10,465	11,277
Fair Value Measurements Recurring Basis \| Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	44,245	52,998
Fair Value Measurements Recurring Basis \| Mortgage-backed Securities-residential
Assets:
Total securities available for sale	105,202	106,562
Fair Value Measurements Recurring Basis \| Asset-backed securities
Assets:
Total securities available for sale	15,713	16,377
Fair Value Measurements Recurring Basis \| Other debt securities
Assets:
Total securities available for sale	11,844	5,407
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Customer Related
Assets:
Interest rate swaps - customer related	624	184
Liabilities:
Total Derivatives:	(624)	(184)
Fair Value Measurements Recurring Basis \| Interest Rate Swaps - Cash Flow Hedges
Liabilities:
Total Derivatives:	(462)	(1,375)
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2)
Assets:
Total securities available for sale	187,469	192,621
Liabilities:
Total derivatives	(1,086)	(1,559)
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government-sponsored Agencies
Assets:
Total securities available for sale	10,465	11,277
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Obligations of States and Political Subdivisions
Assets:
Total securities available for sale	44,245	52,998
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Mortgage-backed Securities-residential
Assets:
Total securities available for sale	105,202	106,562
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Asset-backed securities
Assets:
Total securities available for sale	15,713	16,377
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Other debt securities
Assets:
Total securities available for sale	11,844	5,407
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Interest Rate Swaps - Customer Related
Assets:
Interest rate swaps - customer related	624	184
Liabilities:
Total Derivatives:	(624)	(184)
Fair Value Measurements Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Interest Rate Swaps - Cash Flow Hedges
Liabilities:
Total Derivatives:	$ (462)	$ (1,375)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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