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Loans and Allowance for Loan Losses (Details 2) (USD $) | Jun. 30, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Loans and Leases Receivable, Allowance | $ 6,028,690 | $ 7,400,049 | $ 9,132,000
Commercial Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 2,803,000 | 3,557,000 | 1,793,000
Consumer Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 2,052,000 | 2,518,000 | 3,111,000
Construction and Land Development [Member] |  |  |
Loans and Leases Receivable, Allowance | 868,000 | 827,000 | 3,238,000
Commercial and Industrial Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 296,000 | 482,000 | 925,000
Consumer and Other Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 10,000 | 16,000 | 65,000
Performing Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 2,672,000 | 2,424,000 |
Performing Loans [Member] | Commercial Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 871,000 | 952,000 |
Performing Loans [Member] | Consumer Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 1,271,000 | 1,264,000 |
Performing Loans [Member] | Construction and Land Development [Member] |  |  |
Loans and Leases Receivable, Allowance | 409,000 | 174,000 |
Performing Loans [Member] | Commercial and Industrial Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 111,000 | 18,000 |
Performing Loans [Member] | Consumer and Other Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 10,000 | 16,000 |
Impaired Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 3,357,000 | 4,976,000 |
Impaired Loans [Member] | Commercial Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 1,932,000 | 2,605,000 |
Impaired Loans [Member] | Consumer Real Estate Mortgage [Member] |  |  |
Loans and Leases Receivable, Allowance | 781,000 | 1,254,000 |
Impaired Loans [Member] | Construction and Land Development [Member] |  |  |
Loans and Leases Receivable, Allowance | 459,000 | 653,000 |
Impaired Loans [Member] | Commercial and Industrial Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | 185,000 | 464,000 |
Impaired Loans [Member] | Consumer and Other Loans [Member] |  |  |
Loans and Leases Receivable, Allowance | $ 0 | $ 0 |

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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 Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 -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 2: 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 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph a(ii) -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 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 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. Reference 7: 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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant