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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Feb. 29, 2020
Dec. 01, 2019
Nov. 30, 2019
Cash and Cash Equivalents      
Cash equivalents $ 7,138   $ 4,299
Recent Adopted Accounting Pronouncements      
Right-of-use assets 799 $ 858  
Lease liabilities $ 829 $ 858