Disclosures About Fair Value of Financial Instruments - Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Assets Measured on a Nonrecurring Basis:
Impaired loans	$ 7,101		$ 15,432
Other real estate owned	4,863		6,690
Other real estate owned, adjustment	141us-gaap_ImpairmentOfRealEstate	22us-gaap_ImpairmentOfRealEstate
Level 3 [Member]
Assets Measured on a Nonrecurring Basis:
Other real estate owned	4,863		6,690
Nonrecurring [Member]
Assets Measured on a Nonrecurring Basis:
Impaired loans	1,277		9,390
Impaired loans, adjustment	160		3,865
Other real estate owned	1,820		1,961
Other real estate owned, adjustment	141		333
Nonrecurring [Member] \| Level 3 [Member]
Assets Measured on a Nonrecurring Basis:
Impaired loans	1,277		9,390
Other real estate owned	$ 1,820		$ 1,961

Represents the adjustment to impaired loans

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230

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- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4437-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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