Note 1 - Prior Year Reclassifications (Details) $ in Thousands	Dec. 27, 2014 USD ($)
Scenario, Previously Reported [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets	$ 4,406
Noncurrent deferred income tax assets
Current deferred income tax liabilities (included in other accrued liabilities)	$ (261)
Noncurrent deferred income tax liabilities	(11,061)
Net deferred income tax assets (liabilities)	(6,916)
Restatement Adjustment [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets	(4,406)
Noncurrent deferred income tax assets	353
Current deferred income tax liabilities (included in other accrued liabilities)	261
Noncurrent deferred income tax liabilities	$ 3,792
Net deferred income tax assets (liabilities)
New Accounting Pronouncement, Early Adoption, Effect [Member]
Current deferred income tax assets
Noncurrent deferred income tax assets	$ 353
Current deferred income tax liabilities (included in other accrued liabilities)
Noncurrent deferred income tax liabilities	$ (7,269)
Net deferred income tax assets (liabilities)	(6,916)
Noncurrent deferred income tax liabilities	(7,269)
Net deferred income tax assets (liabilities)	$ (6,916)