Note 5 - Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Patents			Non- Compete			Customer List			Total
Estimated useful life (in years)		14			5			5
Gross amount at December 31, 2016	$	429		$	512		$	2,046		$	2,987
Accumulated amortization at December 31, 2016		(429	)		(449	)		(1,791	)		(2,669	)
Net balance at December 31, 2016	$	-		$	63		$	255		$	318
Gross amount at December 31, 2015	$	429		$	512		$	2,046		$	2,987
Accumulated amortization at December 31, 2015		(429	)		(387	)		(1,535	)		(2,351	)
Net balance at December 31, 2015	$	-		$	125		$	511		$	636

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

2017		318
Total	$	318