Note 11 - Asset Impairments (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 27, 2014	Jan. 02, 2016	Dec. 27, 2014	Dec. 28, 2013
Selling, General and Administrative Expenses [Member]
Asset Impairment Charges			$ 300,000
Manufacturing Facility in Des Plaines, Illinois [Member]
Disposal Group, Including Discontinued Operation, Assets	$ 5,500,000	$ 0	$ 5,500,000
Asset Impairment Charges	$ 300,000	$ 0		$ 0