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Loans and Allowance for Loan Losses (Details 6) (USD $) | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
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Loans by credit quality indicators |  |  |
Total loans | $ 1,041,189,000 | $ 1,072,422,000 | $ 1,262,630,000
Commercial and Industrial [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 285,322,000 | 266,548,000 |
Commercial and Industrial [Member] | Grades 1-4 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 180,314,000 | 169,231,000 |
Commercial and Industrial [Member] | Grades 5-7 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 101,832,000 | 89,463,000 |
Commercial and Industrial [Member] | Grades 8-9 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 3,176,000 | 7,854,000 |
Commercial Vacant Land, Land Development, and Residential Construction [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 48,099,000 | 63,467,000 |
Commercial Vacant Land, Land Development, and Residential Construction [Member] | Grades 1-4 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 6,526,000 | 9,539,000 |
Commercial Vacant Land, Land Development, and Residential Construction [Member] | Grades 5-7 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 37,697,000 | 46,454,000 |
Commercial Vacant Land, Land Development, and Residential Construction [Member] | Grades 8-9 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 3,876,000 | 7,474,000 |
Commercial Real Estate - Owner Occupied [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 259,277,000 | 264,426,000 |
Commercial Real Estate - Owner Occupied [Member] | Grades 1-4 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 150,467,000 | 143,075,000 |
Commercial Real Estate - Owner Occupied [Member] | Grades 5-7 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 102,988,000 | 110,413,000 |
Commercial Real Estate - Owner Occupied [Member] | Grades 8-9 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 5,822,000 | 10,938,000 |
Commercial Real Estate - Non-Owner Occupied [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 324,886,000 | 334,165,000 |
Commercial Real Estate - Non-Owner Occupied [Member] | Grades 1-4 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 154,127,000 | 123,048,000 |
Commercial Real Estate - Non-Owner Occupied [Member] | Grades 5-7 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 128,041,000 | 164,049,000 |
Commercial Real Estate - Non-Owner Occupied [Member] | Grades 8-9 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 42,718,000 | 47,068,000 |
Commercial Real Estate - Multi-Family and Residential Rental [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 50,922,000 | 68,299,000 |
Commercial Real Estate - Multi-Family and Residential Rental [Member] | Grades 1-4 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 24,015,000 | 27,245,000 |
Commercial Real Estate - Multi-Family and Residential Rental [Member] | Grades 5-7 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 22,082,000 | 26,278,000 |
Commercial Real Estate - Multi-Family and Residential Rental [Member] | Grades 8-9 [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 4,825,000 | 14,776,000 |
Retail home equity and other [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | 38,917,000 | 42,336,000 |
Retail 1-4 family mortgages [Member] |  |  |
Loans by credit quality indicators |  |  |
Total loans | $ 33,766,000 | $ 33,181,000 |

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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. + Details
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