Note 2 - Acquisitions - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Feb. 25, 2017	Nov. 23, 2016	Feb. 27, 2016
Goodwill	$ 697,085		$ 487,169
PersonalizationMall.Com [Member]
Current assets		$ 15,100
Property and equipment and other non-current assets		15,100
Goodwill		178,100
Intangible assets		12,000
Total assets acquired		220,300
Accounts payable and other liabilities		(30,900)
Total net assets acquired		$ 189,400