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Bonds and money market funds - Summary of detailed information about bonds and money market funds (Detail) - USD ($)
$ in Thousands
Nov. 30, 2023
Nov. 30, 2022
Schedule Of Detailed Information About Bonds And Money Market Funds [Abstract]    
Bonds $ 6,062 $ 8,990
Guaranteed investment certificates 228 224
Bonds and money market funds $ 6,290 $ 9,214