ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Credit facility based on collateral pledged	$ 615.4

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

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