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Acquisition of Delaware Bancshares, Inc. (Future Amortization Expense) (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 150
Finite-Lived Intangible Assets, Amortization Expense, Year Two	126
Finite-Lived Intangible Assets, Amortization Expense, Year Three	101
Finite-Lived Intangible Assets, Amortization Expense, Year Four	77
Finite-Lived Intangible Assets, Amortization Expense, Year Five	52
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	106
Amortization Expense for the Core Deposit Intangible, Total	612
Delaware Bancshares, Inc. Acquisition [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	30
Finite-Lived Intangible Assets, Amortization Expense, Year Two	30
Finite-Lived Intangible Assets, Amortization Expense, Year Three	30
Finite-Lived Intangible Assets, Amortization Expense, Year Four	30
Finite-Lived Intangible Assets, Amortization Expense, Year Five	30
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	299
Amortization Expense for the Core Deposit Intangible, Total	$ 449

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
-Subparagraph (a)(3)
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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Subparagraph (a)(3)
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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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