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Allowance for Loan Losses Financing Receivable and Allowance Element by Class (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | $ 376,939 | $ 380,731 | $ 372,161 |
Allowance for loan losses | 11,655 | 11,514 | 12,720 | 12,500
Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 2,786 | 2,461 | 3,105 |
General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 3,530 | 3,906 | 4,315 |
Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 3,509 | 3,469 | 4,211 |
Unallocated Reserves [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,830 | 1,678 | 1,089 |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 240,187 | 245,943 | 250,180 |
Allowance for loan losses | 4,500 | 4,602 | 5,879 | 5,865
Commercial Real Estate Portfolio Segment [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,019 | 890 | 1,473 |
Commercial Real Estate Portfolio Segment [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,707 | 1,927 | 2,177 |
Commercial Real Estate Portfolio Segment [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,774 | 1,785 | 2,229 |
Commercial Construction [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 21,686 | 20,382 | 17,090 |
Allowance for loan losses | 590 | 575 | 1,064 | 1,359
Commercial Construction [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 276 | 272 | 760 |
Commercial Construction [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 154 | 157 | 150 |
Commercial Construction [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 160 | 146 | 154 |
Commercial Other [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 97,276 | 95,289 | 89,874 |
Allowance for loan losses | 2,241 | 2,276 | 2,115 | 2,050
Commercial Other [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 834 | 841 | 535 |
Commercial Other [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 690 | 745 | 781 |
Commercial Other [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 717 | 690 | 799 |
Municipal [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 17,790 | 19,117 | 15,017 |
Allowance for loan losses | 15 | 15 | 18 | 18
Municipal [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses |  | 0 | 0 |
Municipal [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses |  | 0 | 0 |
Municipal [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 15 | 15 | 18 |
Residential Term [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,232 | 1,099 | 1,113 | 1,109
Residential Term [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 574 | 404 | 337 |
Residential Term [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 303 | 342 | 336 |
Residential Term [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 355 | 353 | 440 |
Residential Construction [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 22 | 21 | 9 | 11
Residential Construction [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 0 | 0 | 0 |
Residential Construction [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 10 | 10 | 4 |
Residential Construction [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 12 | 11 | 5 |
Home Equity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 708 | 675 | 859 | 654
Home Equity [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 83 | 54 | 0 |
Home Equity [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 343 | 343 | 522 |
Home Equity [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 282 | 278 | 337 |
Consumer Portfolio Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 517 | 573 | 574 | 592
Consumer Portfolio Segment [Member] | Specific Reserves Evaluated Individually for Impairment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | General Reserves Based on Historical Loss Experience [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 323 | 382 | 345 |
Consumer Portfolio Segment [Member] | Reserve for Qualitative Factors [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 194 | 191 | 229 |
Unallocated Financing Receivables [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,830 | 1,678 | 1,089 | 842
Unallocated Financing Receivables [Member] | Unallocated Reserves [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for loan losses | 1,830 | 1,678 | 1,089 |
Substandard [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 35,848 | 41,532 | 50,039 |
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 23,576 | 27,115 | 34,530 |
Substandard [Member] | Commercial Construction [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 777 | 795 | 1,881 |
Substandard [Member] | Commercial Other [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | 11,495 | 13,622 | 13,628 |
Substandard [Member] | Municipal [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
7 Substandard | $ 0 | $ 0 | $ 0 |

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- Definition Loans subject to review and validation annually by independent consulting firm as well internal credit review function. + References No definition available. + 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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