Note 3 - Business Combination - Summaries of the Restructuring Activities and Associated Costs Incurred (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended		18 Months Ended	21 Months Ended
	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jul. 02, 2016
Employee Severance [Member]
Liability, beginning balance	$ 604	$ 663	$ 735	$ 1,172	$ 1,155	$ 1,208	$ 735	$ 1,208	$ 1,155	$ 1,208
Restructuring Charges					75
Cash payments/receipts		(59)	(72)	(101)	(58)	(53)				(51)
Liability, ending balance	553	604	663	1,071	1,172	1,155	553	1,071	553	553
Equipment Relocation Costs [Member]
Liability, beginning balance
Restructuring Charges		21	75						58
Cash payments/receipts		(21)	(75)
Liability, ending balance	58			18			58	18	58	58
Facility Closing [Member]
Liability, beginning balance	20			17
Restructuring Charges		59	30	327	21
Cash payments/receipts		(39)	(30)	(312)	(4)					(20)
Liability, ending balance		20		32	17			32
Gain on Sale of Property and Equipment [Member]
Restructuring charges (recoveries)			(180)
Cash payments/receipts			180
Asset Impairment Charges [Member]
Restructuring Charges		20			237
Non-cash charges		(20)			(237)
Liability, beginning balance	624	663	735	1,189	1,155	1,208	735	1,208	1,155	1,208
Restructuring Charges	58	100		345	333		83	678	58
Restructuring charges (recoveries)			(75)
Cash payments/receipts		(119)		(413)	(62)	(53)				(71)
Cash payments/receipts			3
Liability, ending balance	$ 611	624	$ 663	$ 1,121	1,189	$ 1,155	$ 611	$ 1,121	$ 611	$ 611
Non-cash charges		$ (20)			$ (237)