Loans (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 contract	Mar. 31, 2014 contract	Dec. 31, 2014
Troubled debt restructurings
Reasonable period for classification of troubled debt restructuring nonperforming loans to performing status	6 months
Number of Contracts	8	0
Pre-Modification Outstanding Recorded Investment	$ 601
Post-Modification Outstanding Recorded Investment	601
Troubled debt restructurings	9,666		11,810
Commercial, financial, and agricultural
Troubled debt restructurings
Number of Contracts	2
Pre-Modification Outstanding Recorded Investment	97
Post-Modification Outstanding Recorded Investment	97
Residential
Troubled debt restructurings
Number of Contracts	5
Pre-Modification Outstanding Recorded Investment	234
Post-Modification Outstanding Recorded Investment	234
Mortgage loans foreclosed	125		324
Residential mortgages in process of foreclosure	401		382
Commercial
Troubled debt restructurings
Number of Contracts	1
Pre-Modification Outstanding Recorded Investment	270
Post-Modification Outstanding Recorded Investment	270
Number of contracts defaulted	1	2
Recorded investment	$ 48	1,634

Number of financing receivables that have been modified by troubled debt restructurings.

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Amount of investment in financing receivables (after modification) modified by troubled debt restructurings.

+ References

No definition available.

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Amount of investment in financing receivables (before modification) modified by troubled debt restructurings.

+ References

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Represents the approximate number of months of sustained repayment performance to return a nonperforming troubled debt restructuring to performing status.

+ References

No definition available.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524

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Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 35

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL49126937-111524

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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

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-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5162-111524

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

Reference 4: 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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