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Allowance for Loan Losses (Summary of Primary Segments of Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Collectively evaluated for impairment | $ 742,647 |  | $ 716,359 |  |  |
Individually evaluated for impairment | 2,250 |  | 4,806 |  |  |
Total Loans | 744,897 |  | 721,165 |  |  |
General reserve allocation | 10,398 |  | 10,985 |  |  |
Specific reserve allocation | 747 |  | 1,586 |  |  |
Total allowance for loan losses | 11,145 | 10,960 | 12,571 | 13,317 | 13,778 | 14,623
Commercial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Collectively evaluated for impairment | 116,153 |  | 102,822 |  |  |
Individually evaluated for impairment |  |  |  |  |  |
Total Loans | 116,153 |  | 102,822 |  |  |
General reserve allocation | 2,780 |  | 2,596 |  |  |
Specific reserve allocation |  |  |  |  |  |
Total allowance for loan losses | 2,780 | 2,667 | 2,596 | 2,352 | 2,483 | 2,365
Commercial loans secured by real estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Collectively evaluated for impairment | 387,806 |  | 378,546 |  |  |
Individually evaluated for impairment | 2,238 |  | 4,793 |  |  |
Total Loans | 390,044 |  | 383,339 |  |  |
General reserve allocation | 5,236 |  | 6,210 |  |  |
Specific reserve allocation | 747 |  | 1,586 |  |  |
Total allowance for loan losses | 5,983 | 5,989 | 7,796 | 8,378 | 8,555 | 9,400
Real estate-mortgage [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Collectively evaluated for impairment | 221,736 |  | 217,584 |  |  |
Individually evaluated for impairment |  |  |  |  |  |
Total Loans | 221,736 |  | 217,584 |  |  |
General reserve allocation | 1,279 |  | 1,269 |  |  |
Specific reserve allocation |  |  |  |  |  |
Total allowance for loan losses | 1,279 | 1,267 | 1,269 | 1,206 | 1,250 | 1,270
Consumer [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Collectively evaluated for impairment | 16,952 |  | 17,407 |  |  |
Individually evaluated for impairment | 12 |  | 13 |  |  |
Total Loans | 16,964 |  | 17,420 |  |  |
General reserve allocation | 146 |  | 150 |  |  |
Specific reserve allocation |  |  |  |  |  |
Total allowance for loan losses | 146 | 147 | 150 | 155 | 166 | 174
Allocation for general risk [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
General reserve allocation | 957 |  | 760 |  |  |
Specific reserve allocation |  |  |  |  |  |
Total allowance for loan losses | $ 957 | $ 890 | $ 760 | $ 1,226 | $ 1,324 | $ 1,414

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually 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 (g) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + 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 FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524 Reference 2: 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=28367877&loc=d3e4428-111522 + Details
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