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Cash, Cash Equivalents and Investments - Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
May 31, 2021
Nov. 30, 2020
Investments and Cash [Abstract]    
Due in one year or less $ 4,230 $ 5,998
Due after one year 1,070 2,007
Total $ 5,300 $ 8,005