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Loans Receivable and Allowance for Loan Losses - Company's Loan Portfolio (Detail) (USD $) | Sep. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2011
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Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | $ 435,233,055 |  | $ 464,150,482 |  |  |
Premiums on purchased loans | 202,452 |  | 219,649 |  |  |
Net deferred costs | 636,992 |  | 439,041 |  |  |
Allowance for loan losses | (6,216,070) | (5,322,070) | (6,015,636) | (6,691,731) | (6,673,648) | (9,384,672)
Loans receivable, net | 429,856,429 |  | 458,793,536 |  |  |
Commercial, Real Estate [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 223,883,646 |  | 247,495,321 |  |  |
Allowance for loan losses | (1,801,287) | (1,953,084) | (3,509,395) |  |  | (4,018,746)
Residential Real Estate [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 113,349,382 |  | 119,033,025 |  |  |
Allowance for loan losses | (1,020,075) | (933,961) | (897,368) |  |  | (2,550,588)
Construction [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 335,000 |  | 4,997,991 |  |  |
Allowance for loan losses | (116,218) | (236,484) | (311,297) |  |  | (867,159)
Construction to Permanent [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 10,225,669 |  | 4,851,768 |  |  |
Allowance for loan losses | (24,486) | (23,594) | (18,720) |  |  | (547,333)
Commercial [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 40,002,905 |  | 36,428,751 |  |  |
Allowance for loan losses | (2,759,682) | (1,721,688) | (941,456) |  |  | (882,062)
Consumer Home Equity [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | 45,445,108 |  | 49,180,908 |  |  |
Consumer Installment [Member] |  |  |  |  |  |
Noncancelable Obligations Future Minimum Payments Due [Line Items] |  |  |  |  |  |
Total Loans | $ 1,991,345 |  | $ 2,162,718 |  |  |

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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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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 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 2: 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 3: 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 4: 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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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 2: 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(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
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