Goodwill and Intangible Assets, Net (Tables)

9 Months Ended

Sep. 30, 2016

Changes in the carrying amount of goodwill were as follows:

The components of intangible assets, net were as follows:



	September 30, 2016							December 31, 2015
(In thousands)	Gross ⁽¹⁾		Accumulated Amortization ⁽¹⁾			Net		Gross ⁽¹⁾		Accumulated Amortization ⁽¹⁾			Net
Distribution rights	$	322	$	(120	)	$	202	$	312	$	(96	)	$	216
Patents	11,710		(4,671		)	7,039		11,425		(4,737		)	6,688
Trademarks and trade names	2,400		(1,245		)	1,155		2,401		(1,053		)	1,348
Developed and core technology	12,585		(3,564		)	9,021		12,587		(2,144		)	10,443
Capitalized software development costs	301		(160		)	141		167		(97		)	70
Customer relationships	27,700		(15,643		)	12,057		27,715		(13,554		)	14,161
Total intangible assets, net	$	55,018	$	(25,403	)	$	29,615	$	54,607	$	(21,681	)	$	32,926


⁽¹⁾	This table excludes the gross value of fully amortized intangible assets totaling $9.9 million and $9.0 million at September 30, 2016 and December 31, 2015, respectively.

Amortization expense by income statement caption was as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands)	2016		2015		2016		2015
Cost of sales	$	21	$	31	$	63	$	100
Selling, general and administrative expenses	1,551		1,187		4,618		3,206
Total amortization expense	$	1,572	$	1,218	$	4,681	$	3,306

Estimated future annual amortization expense related to our intangible assets at September 30, 2016, is as follows: