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Loans and the Allowance for Loan Losses (Summary of Activity in Allowance for Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | $ 10,232 | $ 9,754 | $ 10,237 | $ 9,602
Charge offs | (61) | (5) | (66) | (8)
Recoveries | 31 | 579 | 31 | 627
Provision | 0 | 107 | 0 | 0
Ending Balance | 10,202 | 10,221 | 10,202 | 10,221
Commercial and industrial [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 2,083 | 1,784 | 2,424 | 1,527
Charge offs | 0 | 0 | 0 | 0
Recoveries | 21 | 0 | 21 | 0
Provision |  | (37) | (23) | 220
Ending Balance | 2,422 | 1,747 | 2,422 | 1,747
Commercial real estate [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 5,353 | 5,876 | 5,323 | 5,972
Charge offs | (50) | 0 | (50) | 0
Recoveries | 8 | 0 | 8 | 0
Provision | 22 | 297 | 52 | 201
Ending Balance | 5,333 | 6,173 | 5,333 | 6,173
Construction [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 284 | 637 | 313 | 707
Charge offs | 0 | 0 | 0 | 0
Recoveries | 0 | 540 | 0 | 540
Provision | 34 | (728) | 5 | (798)
Ending Balance | 318 | 449 | 318 | 449
Residential mortgage [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 1,378 | 1,234 | 1,532 | 1,263
Charge offs | 0 | 0 | 0 | 0
Recoveries | 0 | 38 | 0 | 85
Provision | (37) | 28 | (191) | (48)
Ending Balance | 1,341 | 1,300 | 1,341 | 1,300
Installment [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 103 | 54 | 113 | 51
Charge offs | (11) | (5) | (16) | (8)
Recoveries | 2 | 1 | 2 | 2
Provision | (65) | 9 | (70) | 14
Ending Balance | 29 | 59 | 29 | 59
Unallocated [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Beginning Balance | 1,031 | 169 | 532 | 82
Charge offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision | (272) | 324 | 227 | 411
Ending Balance | $ 759 | $ 493 | $ 759 | $ 493

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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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)(4) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + 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)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
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- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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