Loans and Allowance for Credit Losses - Loan Portfolio by Impairment Methodology (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 599,033	$ 572,442
Ending balance: individually evaluated for impairment	6,847	18,826
Ending balance: collectively evaluated for impairment	592,186	553,616
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	146,111	128,147
Ending balance: individually evaluated for impairment	55	7,268
Ending balance: collectively evaluated for impairment	146,056	120,879
Real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	401,735	386,627
Ending balance: individually evaluated for impairment	5,294	8,512
Ending balance: collectively evaluated for impairment	396,441	378,115
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	51,187	57,668
Ending balance: individually evaluated for impairment	1,498	3,046
Ending balance: collectively evaluated for impairment	$ 49,689	$ 54,622

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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