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Financial Instruments with Off-Balance Sheet Risk - Contractual Amounts Represent Credit Risk (Detail) (USD $)
Jun. 30, 2013
Commitments to extend credit:  
Total Commitments to extend credit $ 92,504,788
Future Loan Commitments [Member]
 
Commitments to extend credit:  
Total Commitments to extend credit 20,000,271
Home Equity Lines of Credit [Member]
 
Commitments to extend credit:  
Total Commitments to extend credit 30,770,683
Unused Lines of Credit [Member]
 
Commitments to extend credit:  
Total Commitments to extend credit 36,297,354
Undisbursed Construction Loans [Member]
 
Commitments to extend credit:  
Total Commitments to extend credit 4,376,483
Financial Standby Letters of Credit [Member]
 
Commitments to extend credit:  
Total Commitments to extend credit $ 1,059,997