Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Detail)

v3.19.3
Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2019
Aug. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]        
Amortization expense $ 19,000 $ 27,000 $ 73,000 $ 49,000