CASH AND CASH EQUIVALENTS - Additional Information (Detail) (USD $)	May 31, 2013
Maximum
Cash and Cash Equivalents [Line Items]
Insured amount of bank accounts by FDIC	$ 250,000
Operating Checking Account | Minimum
Cash and Cash Equivalents [Line Items]
Average balance of operating checking account balance	250,000
Interest-bearing Deposits | Minimum
Cash and Cash Equivalents [Line Items]
Insured amount of bank accounts by FDIC	250,000
Non Interest Bearing Deposits | Maximum
Cash and Cash Equivalents [Line Items]
Insured amount of bank accounts by FDIC	$ 250,000