Basis of Presentation and Significant Accounting Policies (Schedule of Uncompleted Contracts) (Details) - USD ($) $ in Thousands	Dec. 03, 2016	Nov. 28, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unearned revenue	$ 7,790	$ 10,308
Unbilled accounts receivable	$ 1,343	$ 4,317