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Loans Receivable and Allowance for Loan Losses - Summarizes Impaired Loans (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Schedule Of Financial Receivables [Line Items]
Recorded investments with no related allowance	$ 22,267,905	$ 24,958,254
Recorded investments with an allowance	13,748,862	8,424,824
Recorded investment, Total	36,016,767	33,383,078
Unpaid principal with no related allowance	23,916,396	28,276,743
Unpaid principal with an allowance	16,418,215	8,779,882
Unpaid Principal Balance, Total	40,334,611	37,056,625
Related Allowance with an allowance	2,186,044	968,414
Related Allowance, Total	2,186,044	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	6,339,875	173,208
Recorded investment, Total	6,348,925	219,509
Unpaid principal with no related allowance	93,944	131,195
Unpaid principal with an allowance	6,516,667	350,000
Unpaid Principal Balance, Total	6,610,611	481,195
Related Allowance with an allowance	1,250,663	33,280
Related Allowance, Total	1,250,663	33,280
Commercial, Real Estate [Member]
Schedule Of Financial Receivables [Line Items]
Recorded investments with no related allowance	12,323,812	12,328,103
Recorded investments with an allowance	3,291,000	3,581,000
Recorded investment, Total	15,614,812	15,909,103
Unpaid principal with no related allowance	13,540,163	13,369,985
Unpaid principal with an allowance	3,606,947	3,606,947
Unpaid Principal Balance, Total	17,147,110	16,976,932
Related Allowance with an allowance	538,714	728,607
Related Allowance, Total	538,714	728,607
Construction [Member]
Schedule Of Financial Receivables [Line Items]
Recorded investments with an allowance	3,470,518	1,862,038
Recorded investment, Total	3,470,518	1,862,038
Unpaid principal with an allowance	3,645,247	2,013,663
Unpaid Principal Balance, Total	3,645,247	2,013,663
Related Allowance with an allowance	236,484	120,616
Related Allowance, Total	236,484	120,616
Construction to Permanent [Member]
Schedule Of Financial Receivables [Line Items]
Recorded investments with no related allowance	1,228,429	1,258,710
Recorded investment, Total	1,228,429	1,258,710
Unpaid principal with no related allowance	1,425,000	1,425,000
Unpaid Principal Balance, Total	1,425,000	1,425,000
Residential Real Estate [Member]
Schedule Of Financial Receivables [Line Items]
Recorded investments with no related allowance	8,108,728	10,760,965
Recorded investments with an allowance	645,533	2,806,210
Recorded investment, Total	8,754,261	13,567,175
Unpaid principal with no related allowance	8,240,449	12,786,388
Unpaid principal with an allowance	2,647,198	2,806,766
Unpaid Principal Balance, Total	10,887,647	15,593,154
Related Allowance with an allowance	158,247	83,543
Related Allowance, Total	158,247	83,543
Consumer [Member]
Schedule Of Financial Receivables [Line Items]
Recorded investments with no related allowance	597,886	564,175
Recorded investments with an allowance	1,936	2,368
Recorded investment, Total	599,822	566,543
Unpaid principal with no related allowance	616,840	564,175
Unpaid principal with an allowance	2,156	2,506
Unpaid Principal Balance, Total	618,996	566,681
Related Allowance with an allowance	1,936	2,368
Related Allowance, Total	$ 1,936	$ 2,368

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