Note 11 - Income Taxes - Deferred Income Tax Balances (Details) - USD ($) $ in Thousands	Dec. 01, 2018	Dec. 02, 2017
Employee benefit costs	$ 19,617	$ 36,824
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	1,809	27,197
Tax loss carryforwards	27,532	24,096
Other	20,865	20,323
Gross deferred tax assets	69,823	108,440
Less: valuation allowance	(14,129)	(9,273)
Total net deferred tax assets	55,694	99,167
Depreciation and amortization	(242,877)	(336,260)
Total deferred tax liability	(242,877)	(336,260)
Net deferred tax liability	$ (187,183)	$ (237,093)