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Loans Receivable and Allowance for Loan Losses - Summarizes Impaired Loans (Detail) (USD $) | Sep. 30, 2013 | Dec. 31, 2012
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Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | $ 20,115,755 | $ 24,958,254
Recorded investments with an allowance | 10,370,985 | 8,424,824
Recorded investment, Total | 30,486,740 | 33,383,078
Unpaid principal with no related allowance | 21,279,358 | 28,276,743
Unpaid principal with an allowance | 12,909,231 | 8,779,882
Unpaid Principal Balance, Total | 34,188,589 | 37,056,625
Related Allowance with an allowance | 3,156,881 | 968,414
Related Allowance, Total | 3,156,881 | 968,414
Commercial [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | 9,050 | 46,301
Recorded investments with an allowance | 6,100,443 | 173,208
Recorded investment, Total | 6,109,493 | 219,509
Unpaid principal with no related allowance | 103,309 | 131,195
Unpaid principal with an allowance | 6,166,667 | 350,000
Unpaid Principal Balance, Total | 6,269,976 | 481,195
Related Allowance with an allowance | 2,200,000 | 33,280
Related Allowance, Total | 2,200,000 | 33,280
Commercial, Real Estate [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | 10,154,788 | 12,328,103
Recorded investments with an allowance | 3,288,148 | 3,581,000
Recorded investment, Total | 13,442,936 | 15,909,103
Unpaid principal with no related allowance | 10,863,318 | 13,369,985
Unpaid principal with an allowance | 3,606,643 | 3,606,947
Unpaid Principal Balance, Total | 14,469,961 | 16,976,932
Related Allowance with an allowance | 513,112 | 728,607
Related Allowance, Total | 513,112 | 728,607
Construction [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance |  |
Recorded investments with an allowance | 335,000 | 1,862,038
Recorded investment, Total | 335,000 | 1,862,038
Unpaid principal with no related allowance |  |
Unpaid principal with an allowance | 486,625 | 2,013,663
Unpaid Principal Balance, Total | 486,625 | 2,013,663
Related Allowance with an allowance | 116,218 | 120,616
Related Allowance, Total | 116,218 | 120,616
Construction to Permanent [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | 1,212,951 | 1,258,710
Recorded investments with an allowance |  |
Recorded investment, Total | 1,212,951 | 1,258,710
Unpaid principal with no related allowance | 1,425,000 | 1,425,000
Unpaid principal with an allowance |  |
Unpaid Principal Balance, Total | 1,425,000 | 1,425,000
Related Allowance with an allowance |  |
Related Allowance, Total |  |
Residential Real Estate [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | 8,087,483 | 10,760,965
Recorded investments with an allowance | 645,533 | 2,806,210
Recorded investment, Total | 8,733,016 | 13,567,175
Unpaid principal with no related allowance | 8,215,052 | 12,786,388
Unpaid principal with an allowance | 2,647,198 | 2,806,766
Unpaid Principal Balance, Total | 10,862,250 | 15,593,154
Related Allowance with an allowance | 325,690 | 83,543
Related Allowance, Total | 325,690 | 83,543
Consumer [Member] |  |
Schedule Of Financial Receivables [Line Items] |  |
Recorded investments with no related allowance | 651,483 | 564,175
Recorded investments with an allowance | 1,861 | 2,368
Recorded investment, Total | 653,344 | 566,543
Unpaid principal with no related allowance | 672,679 | 564,175
Unpaid principal with an allowance | 2,098 | 2,506
Unpaid Principal Balance, Total | 674,777 | 566,681
Related Allowance with an allowance | 1,861 | 2,368
Related Allowance, Total | $ 1,861 | $ 2,368

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 + Details
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