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General (Details) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011 Restatement Adjustment [Member] | Dec. 31, 2010 Restatement Adjustment [Member] | Dec. 31, 2009 Restatement Adjustment [Member]
General (Textual) [Abstract] |  |  |  |
Provision for loan losses |  | $ 938,000 | $ 639,000 | $ 321,000
General (Additional Textual) [Abstract] |  |  |  |
Total periodic charge-off | 2,390,000 |  |  |
Quantifying Misstatement in Current Year Financial Statements, Amount | $ 2,390,000 |  |  |

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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition Amount of each individual error being corrected in the correcting adjustment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e30840-122693 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section N + Details
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