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Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements - Additional Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 01, 2018
May 31, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Reclassification of net unrealized gains from accumulated other comprehensive income (loss)   $ (1,955)
Accounting Standards Update 2016-01 | Reclassification out of Accumulated Other Comprehensive Income    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Reclassification of net unrealized gains from accumulated other comprehensive income (loss) $ (1,955)