COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - Jul. 31, 2015 - USD ($) $ in Thousands	Total	Total	Total
Long-term Purchase Commitment [Line Items]
Construction cost spent		$ 50,100	$ 160,400
Capitalized interest		335
Capital Additions
Long-term Purchase Commitment [Line Items]
Construction cost spent	$ 11,400
Construction agreements related to new complex		7,700
Expected construction costs during the applicable time period		27,500
Estimated cost of project	$ 159,000	$ 159,000	$ 159,000