Note 3 - Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

					March 31, 2016							December 31, 2015
	Useful Lives (Years)				Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Intangibles (amount in thousands)
Patent		8	-	18	$	546	$	(212	)	$	334	$	539	$	(203	)	$	336
Software			3			395		(367	)		28		395		(364	)		31
Customer relationships			12			3,370		(1,747	)		1,623		3,370		(1,671	)		1,699
Permit			10			545		(386	)		159		545		(373	)		172
Total					$	4,856	$	(2,712	)	$	2,144	$	4,849	$	(2,611	)	$	2,238