Note 10 - Pension and Postretirement Benefits - Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Nov. 28, 2015	Nov. 29, 2014
United States Pension Plan of US Entity [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 123,816	$ 138,308
United States Pension Plan of US Entity [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	$ 70,325	$ 93,056
United States Pension Plan of US Entity [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets
United States Pension Plan of US Entity [Member] | Equity Funds [Member]
Fair value of plan assets	$ 194,141	$ 231,364
United States Pension Plan of US Entity [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	29,948	27,782
United States Pension Plan of US Entity [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	100,086	121,450
United States Pension Plan of US Entity [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	352	407
United States Pension Plan of US Entity [Member] | Fixed Income Funds [Member]
Fair value of plan assets	130,386	149,639
United States Pension Plan of US Entity [Member] | Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 11,934	$ 3,332
United States Pension Plan of US Entity [Member] | Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
United States Pension Plan of US Entity [Member] | Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets
United States Pension Plan of US Entity [Member] | Cash [Member]
Fair value of plan assets	$ 11,934	$ 3,332
United States Pension Plan of US Entity [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	165,698	169,422
United States Pension Plan of US Entity [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	170,411	214,506
United States Pension Plan of US Entity [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	352	407
United States Pension Plan of US Entity [Member]
Fair value of plan assets	336,461	384,335
Foreign Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	31,253	34,362
Foreign Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	$ 55,430	$ 59,504
Foreign Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets
Foreign Pension Plan [Member] | Equity Funds [Member]
Fair value of plan assets	$ 86,683	$ 93,866
Foreign Pension Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	41,572	48,346
Foreign Pension Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	42,595	39,006
Foreign Pension Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	530	582
Foreign Pension Plan [Member] | Fixed Income Funds [Member]
Fair value of plan assets	84,697	87,934
Foreign Pension Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 861	$ 4,464
Foreign Pension Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Foreign Pension Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets
Foreign Pension Plan [Member] | Cash [Member]
Fair value of plan assets	$ 861	$ 4,464
Foreign Pension Plan [Member] | Real Estate [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets
Foreign Pension Plan [Member] | Real Estate [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Foreign Pension Plan [Member] | Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		$ 2,160
Foreign Pension Plan [Member] | Real Estate [Member]
Fair value of plan assets		2,160
Foreign Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 73,686	87,172
Foreign Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	98,025	98,510
Foreign Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	530	2,742
Foreign Pension Plan [Member]
Fair value of plan assets	$ 172,241	$ 188,424
Other Postretirement Benefit Plan [Member] | Insurance [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets
Other Postretirement Benefit Plan [Member] | Insurance [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Other Postretirement Benefit Plan [Member] | Insurance [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	$ 62,299	$ 61,980
Other Postretirement Benefit Plan [Member] | Insurance [Member]
Fair value of plan assets	62,299	61,980
Other Postretirement Benefit Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 286	$ 1,096
Other Postretirement Benefit Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Other Postretirement Benefit Plan [Member] | Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets
Other Postretirement Benefit Plan [Member] | Cash [Member]
Fair value of plan assets	$ 286	$ 1,096
Other Postretirement Benefit Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	$ 286	$ 1,096
Other Postretirement Benefit Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets
Other Postretirement Benefit Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	$ 62,299	$ 61,980
Other Postretirement Benefit Plan [Member]
Fair value of plan assets	$ 62,585	$ 63,076