Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 01, 2018	Nov. 30, 2019	Nov. 30, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of net unrealized gains from accumulated other comprehensive income (loss)		$ (1,955)	$ 4,536
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)
Accounting Standards Update 2014-09
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Adjustment to retained earnings			$ 4,536