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Current and Expected Amortization Expense of Intangible Assets (Detail) - May. 31, 2015 - USD ($)
$ in Thousands
Total
Disclosure Current And Expected Amortization Expense Of Intangible Assets [Abstract]  
Amortization expense for the six months ended May 31, 2015 $ 4
Remaining estimated amortization expense for the year ending November 30:  
2014 8
2015 3
2016 1
2017 1
2018 $ 1