Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2016

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of Intangible Assets

Intangible assets consist of the following:

	June 30, 2016							December 31, 2015
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents	$	2,557	$	(2,305	)	$	252	$	2,513	$	(2,253	)	$	260
Software	206		(68		)	138		206		(53		)	153
Marketing assets and customer relationships	101		(27		)	74		101		(21		)	80
Non-compete agreements	101		(58		)	43		101		(45		)	56
	$	2,965	$	(2,458	)	$	507	$	2,921	$	(2,372	)	$	549

Schedule of Amortization Expense For Intangible Assets

Amortization expense for the three and six month periods ended June 30, 2016 and 2015 is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2016		2015		2016		2015
Patents	$	26	$	27	$	52	$	56
Software	8		8		15		15
Marketing assets and customer relationships	3		2		6		5
Non-compete agreements	6		7		13		13
	$	43	$	44	$	86	$	89