ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Credit facility based on collateral pledged	$ 300.4

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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