Note 6 - Acquisitions (Details) - BGA Purchase Consideration (USD $) In Thousands, unless otherwise specified	9 Months Ended					9 Months Ended
	Sep. 29, 2012	Sep. 28, 2013	Dec. 29, 2012	Sep. 28, 2013 BGA [Member] Restricted Covenants [Member]	Sep. 28, 2013 BGA [Member] Customer Relationships [Member]	Sep. 28, 2013 BGA [Member]
Business Acquisition [Line Items]
Cash	$ 1,292					$ 1,292
Lease in excess of market, at fair value						469
Contingent consideration, at fair value						930
Total consideration						2,691
Fixed assets						28
Intangible assets acquired				70	180
Deferred tax asset						187
Goodwill		$ 9,545	$ 9,545			$ 2,226