Note 5 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 01, 2016
Gross Amount	$ 11,877	$ 11,877
Accumulated Amortization	(3,103)	(2,814)
Net Book Value	8,774	9,063
Customer Relationships [Member]
Gross Amount	6,500	6,500
Accumulated Amortization	(775)	(693)
Net Book Value	5,725	5,807
Technology-Based Intangible Assets [Member]
Gross Amount	1,800	1,800
Accumulated Amortization	(214)	(192)
Net Book Value	1,586	1,608
Noncompete Agreements [Member]
Gross Amount	3,577	3,577
Accumulated Amortization	(2,114)	(1,929)
Net Book Value	$ 1,463	$ 1,648