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Long-Term Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Summary of long-term advances from the Federal Home Loan Bank
Amount of Advances	$ 4,785	$ 12,876
Weighted Average
Summary of long-term advances from the Federal Home Loan Bank
Weighted Average Interest Rate	1.70%	2.69%
Fixed-rate constant payment advances
Summary of long-term advances from the Federal Home Loan Bank
Amount of Advances	$ 4,785	$ 7,876
Fixed-rate constant payment advances | Weighted Average
Summary of long-term advances from the Federal Home Loan Bank
Weighted Average Interest Rate	1.70%	1.57%
Convertible and putable fixed-rate advance
Summary of long-term advances from the Federal Home Loan Bank
Amount of Advances	$ 0	$ 5,000
Convertible and putable fixed-rate advance | Weighted Average
Summary of long-term advances from the Federal Home Loan Bank
Weighted Average Interest Rate	0.00%	4.45%

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- Definition

Federal home loan bank advances branch of FHLB.

+ References

No definition available.

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- Definition

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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- Definition

States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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