XML 55 R44.htm IDEA: XBRL DOCUMENT v3.20.2
Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]        
Amortization expense $ 17,000 $ 19,000 $ 51,000 $ 73,000