Pension and Other Postretirement Plans (Narrative) (Details) - USD ($)			12 Months Ended
		Jun. 27, 2015	Dec. 03, 2016	Nov. 28, 2015	Nov. 29, 2014	Jan. 01, 2007
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Effect of plan disposal on projected benefit obligation and pension liability	[1]		$ (8,597,000)	$ (637,000)
Pension Benefits [Member] | J.L. Clark, Inc [Member]
Defined Benefit Plan Disclosure [Line Items]
Effect of plan disposal on projected benefit obligation and pension liability				3,988,000
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Voluntary contributions			$ 0	0	$ 0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations			40.00%
United States Pension Plans of US Entity, Defined Benefit [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations			60.00%
United States Pension Plans of US Entity, Defined Benefit [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions in next fiscal year			$ 0
Defined benefit plan effect on next fiscal year net periodic benefit cost from changes in assumptions			1,952,000
United States Pension Plans of US Entity, Defined Benefit [Member] | Qualified Pension Plans [Member] | Pension Benefits [Member] | J.L. Clark, Inc [Member]
Defined Benefit Plan Disclosure [Line Items]
Effect of plan disposal on projected benefit obligation and pension liability		$ 3,988,000
United States Pension Plans of US Entity, Defined Benefit [Member] | Nonqualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions in next fiscal year			157,000
Aggregate projected benefit obligation			2,000,000
Aggregate accumulated benefit obligation			1,884,000
Restricted trust, included in Other noncurrent assets			592,000	729,000
Defined benefit plan, benefit obligation			2,000,000	2,041,000
Defined benefit plan effect on next fiscal year net periodic benefit cost from changes in assumptions			7,000
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions in next fiscal year			318,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated employer contributions in next fiscal year			39,000
Defined benefit plan, benefit obligation			$ 294,000	341,000	397,000
Next fiscal year assumptions for calculating net periodic benefit cost, discount rate			3.25%
Unrecognized net prior service credit			$ (228,000)	(350,000)		$ 1,708,000
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, benefit obligation			198,899,000	195,516,000	$ 204,982,000
Unrecognized net prior service credit			0	$ 1,000
Pension Plan [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Aggregate projected benefit obligation			196,898,000
Aggregate accumulated benefit obligation			193,373,000
Aggregate fair value of plan assets			$ 162,231,000
Next fiscal year assumptions for calculating net periodic benefit cost, long term return on plat assets			5.50%

[1] Includes gains of $3,988 related to a curtailment and re-measurement of the assets and liabilities of the Company's qualified U.S. pension plan resulting from the disposal of J.L. Clark. See Note L for related information.