Note 10 - Pension and Postretirement Benefits - Statement of Financial Position as of Fiscal Year End (Details) - USD ($) $ in Thousands	Dec. 03, 2016	Nov. 28, 2015
Non-current liabilities	$ (73,545)	$ (76,324)
United States Pension Plan of US Entity [Member]
Non-current assets
Current liabilities	(1,489)	(1,490)
Non-current liabilities	(29,219)	(38,147)
Ending balance	(30,708)	(39,637)
Foreign Pension Plan [Member]
Non-current assets		4,282
Current liabilities	(1,162)	(1,100)
Non-current liabilities	(37,691)	(32,113)
Ending balance	(38,853)	(28,931)
Other Postretirement Benefit Plan [Member]
Non-current assets	27,093	15,755
Current liabilities	(206)	(191)
Non-current liabilities	(2,968)	(2,902)
Ending balance	$ 23,919	$ 12,662