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Loans and the Allowance for Loan Losses (Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | $ 807,291 | $ 755,993
Commercial and industrial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 168,137 | 146,711
Commercial real estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 448,624 | 408,164
Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 33,521 | 39,388
Residential mortgage [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 156,664 | 160,771
Installment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 345 | 959
Pass [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 764,231 | 707,017
Pass [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 164,073 | 143,097
Pass [Member] | Commercial real estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 416,855 | 371,519
Pass [Member] | Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 33,521 | 36,344
Pass [Member] | Residential mortgage [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 149,437 | 155,098
Pass [Member] | Installment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 345 | 959
Special Mention [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 20,164 | 26,304
Special Mention [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 2,744 | 2,022
Special Mention [Member] | Commercial real estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 17,028 | 24,282
Special Mention [Member] | Residential mortgage [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 392 |
Substandard [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 22,896 | 22,672
Substandard [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 1,320 | 1,592
Substandard [Member] | Commercial real estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | 14,741 | 12,363
Substandard [Member] | Construction [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount |  | 3,044
Substandard [Member] | Residential mortgage [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and Leases Receivable, Gross, Carrying Amount | $ 6,835 | $ 5,673

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522 Reference 2: 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. + Details
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