Summary of Significant Accounting Policies (Details) $ in Thousands				3 Months Ended	12 Months Ended
	Dec. 01, 2019 USD ($) lease	Jan. 01, 2018	Dec. 31, 2017	Feb. 28, 2018 USD ($)	Nov. 30, 2019 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2017
Fiscal Year
Length of fiscal year					12 months	12 months	12 months
Cash and Cash Equivalents
Cash equivalents					$ 4,299	$ 4,980
Income Taxes
Accrual for uncertain income tax positions					0
Recent Adopted Accounting Pronouncements
Corporate statutory income tax rate		21.00%	35.00%	21.00%		22.00%	35.00%
Reclassification resulted in a decrease to AOCI and an increase to retained earnings					36
Deferred Tax Assets
Deferred tax asset					$ 938
ASU 2016-09
Deferred Tax Assets
Deferred tax asset				$ 879
ASU 2016-09 | Forecast Adjustment
Deferred Tax Assets
Deferred tax asset				$ 879
ASU 2016-02
Recent Adopted Accounting Pronouncements
Number of operating leases | lease	2
Operating right-of-use assets	$ 860
Operating lease liability	$ 800