Note 8 - Income Taxes - Reconciliation of Effective Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 03, 2016	Nov. 28, 2015	Nov. 29, 2014
Statutory U.S. federal income tax rate	$ 58,599	$ 48,421	$ 27,759
State income taxes, net of federal benefit	2,135	3,281	1,534
Foreign dividend repatriation	519	388	760
Foreign operations	(3,386)	1,547	(8,287)
Impact of option valuation	(1,879)	1,211
Interest income not taxable in the U.S.	(525)	(1,243)	(1,649)
Change in valuation allowance	(2,219)	480	3,317
Tax impact of special charges, net	173	1,678	11,773
Research & Development tax credit	(2,291)	(71)	(16)
Section 199 Manufacturing Deduction	(1,658)	(2,036)	(757)
Other	968	2,199	(86)
Total	$ 50,436	$ 55,855	$ 34,348