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Subordinated Debentures (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified |  |  |  |  | 6 Months Ended |  |  | 1 Months Ended
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Jun. 30, 2012 | Dec. 31, 2011 | Dec. 30, 2008 | Dec. 31, 2003 Other Assets [Member] | Jun. 30, 2012 Subordinated [Member] | Dec. 31, 2011 Subordinated [Member] | Dec. 31, 2003 Subordinated [Member] | Dec. 31, 2003 Private Placement [Member]
Subordinated Debentures (Textual) [Abstract] |  |  |  |  |  |  |  |
Holding Company, closed a pooled private offering |  |  |  |  |  |  |  | 5,000
Trust preferred securities with a liquidation amount |  |  |  |  |  |  |  | $ 1
Subordinated debentures |  |  |  |  |  |  | $ 5,155 |
Holding company's investment in the common stock |  |  |  | 155 |  |  |  |
Trust preferred securities and subordinated debentures have a variable rate of interest |  |  |  |  | 2.85% |  |  |
Trust preferred securities and subordinated debentures have a stated percentage |  |  |  |  | 3.32% | 3.43% |  |
Maturity date of subordinated debentures |  |  |  |  | Dec. 30, 2033 |  |  |
Subordinated Debentures (Additional Textual) [Abstract] |  |  |  |  |  |  |  |
Holding Company may redeem the subordinated debentures in a principal amount with integral multiples |  |  | $ 1 |  |  |  |  |
Percentage in which holding company redeem subordinated debentures |  |  | 100.00% |  |  |  |  |
Cumulative deferred interest payments | $ 302 | $ 210 |  |  |  |  |  |

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- Definition Multiple of amount for redemption of subordinate debentures. + References No definition available. + Details
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- Definition Value of common stock held in trust. + References No definition available. + Details
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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -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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