Note 2 - Acquisitions - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	May 27, 2017	Feb. 25, 2017	Nov. 23, 2016
Goodwill	$ 707,643	$ 697,085
PersonalizationMall.Com [Member]
Current assets			$ 15,100
Property and equipment and other non-current assets			9,300
Goodwill			185,500
Intangible assets			10,400
Total assets acquired			220,300
Accounts payable and other liabilities			(30,900)
Total net assets acquired			$ 189,400