Note 12 - Fair Value Measurements - Fair Values Financial Assets and Liabilities Measured on a Non-recurring Basis (Details) $ in Thousands	Aug. 30, 2016 USD ($)
Fair Value, Inputs, Level 2 [Member] \| Assets Held for Use [Member]
Assets, Fair Value Disclosure, Nonrecurring	$ 1,195
Fair Value, Inputs, Level 2 [Member] \| Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Assets, Fair Value Disclosure, Nonrecurring	695
Assets, Fair Value Disclosure, Nonrecurring	$ 1,890

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

No definition available.

Name:	us-gaap_AssetsFairValueDisclosureNonrecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant