Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v2.4.1.9
Commitments and Contingencies - Additional Information (Detail) (USD $)
Apr. 30, 2015
Commitments and Contingencies Disclosure [Abstract]  
Demand notes payable $ 20,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity