Note 4 - Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2016

				June 30, 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	$	566	$	(259	)	$	307	$	539	$	(203	)	$	336
Software		3			395		(370	)		25		395		(364	)		31
Customer relationships		12			3,370		(1,822	)		1,548		3,370		(1,671	)		1,699
Permit		10			545		(400	)		145		545		(373	)		172
Total				$	4,876	$	(2,851	)	$	2,025	$	4,849	$	(2,611	)	$	2,238