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Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
May 31, 2019
May 31, 2018
May 31, 2019
May 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]        
Amortization expense $ 27,000 $ 11,000 $ 54,000 $ 22,000