Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of Intangible Assets

Intangible assets consist of the following:

	September 30, 2017							December 31, 2016
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents	$	2,673	$	(2,433	)	$	240	$	2,567	$	(2,351	)	$	216
Software	206		(104		)	102		206		(82		)	124
Marketing assets and customer relationships	101		(42		)	59		101		(33		)	68
Non-compete agreements	101		(89		)	12		101		(71		)	30
	$	3,081	$	(2,668	)	$	413	$	2,975	$	(2,537	)	$	438

Schedule of Amortization Expense For Intangible Assets

Amortization expense in the three and nine months ended September 30, 2017 and 2016 is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands)	2017		2016		2017		2016
Patents	$	31	$	27	$	82	$	79
Software		6		7	22		22
Marketing assets and customer relationships		3		3	9		9
Non-compete agreements		5		6	18		19
	$	45	$	43	$	131	$	129