Pension and Other Postretirement Benefits - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	May 28, 2016	May 28, 2016	Nov. 28, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average discount rate, rounded amount		0.25%
Cash contributions	$ 29	$ 101
Qualified Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of plan amendment on net periodic benefit cost compared to prior approach		1,343
Effect of plan amendment on net periodic benefit cost	445	445
Nonqualified Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of plan amendment on net periodic benefit cost compared to prior approach		14
Effect of plan amendment on net periodic benefit cost	58	58
Other Noncurrent Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Restricted trust, included in Other noncurrent assets	$ 651	$ 651	$ 729