Note 6 - Acquisitions (Details) - Maximum Deferred Consideration Payments (BGA [Member], USD $) In Thousands, unless otherwise specified	Jun. 28, 2014
January 3, 2015 [Member]
Business Acquisition, Contingent Consideration [Line Items]
Estimated contingent consideration payments	$ 88
January 2, 2016 [Member]
Business Acquisition, Contingent Consideration [Line Items]
Estimated contingent consideration payments	222
December 31, 2016 [Member]
Business Acquisition, Contingent Consideration [Line Items]
Estimated contingent consideration payments	307
Estimated Future Payments [Member]
Business Acquisition, Contingent Consideration [Line Items]
Estimated contingent consideration payments	$ 617