Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of Intangible Assets

Intangible assets consist of the following:

	March 31, 2016							December 31, 2015
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents	$	2,527	$	(2,279	)	$	248	$	2,513	$	(2,253	)	$	260
Software	206		(60		)	146		206		(53		)	153
Marketing assets and customer relationships	101		(24		)	77		101		(21		)	80
Non-compete agreements	101		(52		)	49		101		(45		)	56
	$	2,935	$	(2,415	)	$	520	$	2,921	$	(2,372	)	$	549

Schedule of Amortization Expense For Intangible Assets

Amortization expense for the three month periods ended March 31, 2016 and 2015 is as follows:

	Three Months Ended March 31,
(In thousands)	2016		2015
Patents	$	26	$	29
Software	7		7
Marketing assets and customer relationships	3		3
Non-compete agreements	7		6
	$	43	$	45