Note 5 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Oct. 01, 2016
Gross Amount	$ 11,877	$ 11,877
Accumulated Amortization	(3,393)	(2,814)
Net Book Value	8,484	9,063
Customer Relationships [Member]
Gross Amount	6,500	6,500
Accumulated Amortization	(856)	(693)
Net Book Value	5,644	5,807
Technology-Based Intangible Assets [Member]
Gross Amount	1,800	1,800
Accumulated Amortization	(237)	(192)
Net Book Value	1,563	1,608
Noncompete Agreements [Member]
Gross Amount	3,577	3,577
Accumulated Amortization	(2,300)	(1,929)
Net Book Value	$ 1,277	$ 1,648