Commitments and Contingent Liabilities - Additional Information (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Line Items]
Loan Commitments	$ 33,218,063	$ 37,703,387
Letters of Credit Outstanding	$ 2,892,830	$ 3,113,225

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant