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Loans Loan Portfolio (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Schedule of Financing Receivables [Line Items]
Loans	$ 863,477	$ 869,284	$ 870,892
Percentage of loans receivable, by type	100.00%	100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member]
Schedule of Financing Receivables [Line Items]
Loans	250,180	251,335	254,708
Percentage of loans receivable, by type	29.00%	28.90%	29.30%
Commercial Construction [Member]
Schedule of Financing Receivables [Line Items]
Loans	17,090	22,417	30,828
Percentage of loans receivable, by type	2.00%	2.60%	3.50%
Commercial Other [Member]
Schedule of Financing Receivables [Line Items]
Loans	89,874	81,183	85,467
Percentage of loans receivable, by type	10.40%	9.30%	9.80%
Municipal [Member]
Schedule of Financing Receivables [Line Items]
Loans	15,017	14,704	15,961
Percentage of loans receivable, by type	1.70%	1.70%	1.80%
Residential Term [Member]
Schedule of Financing Receivables [Line Items]
Loans	376,029	379,447	358,394
Percentage of loans receivable, by type	43.50%	43.70%	41.20%
Residential Construction [Member]
Schedule of Financing Receivables [Line Items]
Loans	4,222	6,459	6,451
Percentage of loans receivable, by type	0.50%	0.70%	0.70%
Home Equity [Member]
Schedule of Financing Receivables [Line Items]
Loans	96,536	99,082	103,372
Percentage of loans receivable, by type	11.20%	11.40%	11.90%
Consumer Portfolio Segment [Member]
Schedule of Financing Receivables [Line Items]
Loans	$ 14,529	$ 14,657	$ 15,711
Percentage of loans receivable, by type	1.70%	1.70%	1.80%

X

- Definition

Reflects the break down of the gross carrying amount of all categories of loans and leases held in the portfolio, after deducting deferred income, but before deducting the allowance for losses on loans and leases as a percentage of total portfolio.

+ References

No definition available.

+ Details

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Section 563c.102

-Paragraph 8

-Subparagraph e

-Chapter V

-Subsection I

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.



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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 116

-IssueDate 2006-05-01

-Chapter 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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