Loans, Troubled Debt Restructurings Segregated by Class (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015 Loan	Mar. 31, 2014 Loan	Dec. 31, 2014 Loan
Financing Receivable, Modifications [Line Items]
Number of Loans	6	4	22
Post-Modification Outstanding Balance	$ 326	$ 167	$ 7,898
Defaulted restructured loans, number of loans	1	2
Defaulted restructured loans, recorded investment	261	34
Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	326	167	6,982
Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0
Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	916
Commercial Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans			1
Post-Modification Outstanding Balance			7
Defaulted restructured loans, number of loans	0	0
Defaulted restructured loans, recorded investment	0	0
Commercial Construction [Member] \| Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			7
Commercial Construction [Member] \| Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0
Commercial Construction [Member] \| Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0
Commercial Secured by Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	4	2	11
Post-Modification Outstanding Balance	290	126	5,775
Defaulted restructured loans, number of loans	1	0
Defaulted restructured loans, recorded investment	261	0
Commercial Secured by Real Estate [Member] \| Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	290	126	5,707
Commercial Secured by Real Estate [Member] \| Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0
Commercial Secured by Real Estate [Member] \| Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	68
Commercial Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	2	2	8
Post-Modification Outstanding Balance	36	41	1,268
Defaulted restructured loans, number of loans	0	2
Defaulted restructured loans, recorded investment	0	34
Commercial Other [Member] \| Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	36	41	1,268
Commercial Other [Member] \| Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0
Commercial Other [Member] \| Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0
Real Estate Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans			2
Post-Modification Outstanding Balance			848
Real Estate Mortgage [Member] \| Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0
Real Estate Mortgage [Member] \| Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0
Real Estate Mortgage [Member] \| Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			$ 848

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Number of 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 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

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- Definition

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=35738203&loc=SL6953682-111524

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