Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 27, 2015

The roll-forward of activity related to our goodwill was as follows (in thousands):

The gross amount of our other acquired intangible assets and the related accumulated amortization was as follows (in thousands):



	September 27, 2015			December 31, 2014
Patents, trademarks and other	$	26,687		$	25,333
Accumulated amortization	(14,803		)	(12,805		)
Net patents, trademarks and other	11,884			12,528
Customer relationships	21,358			21,739
Accumulated amortization	(7,445		)	(5,863		)
Net customer relationships	13,913			15,876
Developed technology	21,898			33,525
Accumulated amortization	(9,880		)	(7,818		)
Net developed technology	12,018			25,707
Total intangible assets included in other long-term assets	$	37,815		$	54,111

Amortization expense was as follows (in thousands):



	Thirty-Nine Weeks Ended
	September 27, 2015		September 28, 2014
Patents, trademarks and other	$	3,166	$	3,850
Customer relationships	2,002		1,882
Developed technology	2,573		2,906
Total amortization expense	$	7,741	$	8,638

Expected amortization, without consideration for foreign currency effects, is as follows over the next five years and thereafter (in thousands):



	Patents, Trademarks and Other		Customer Relationships		Developed Technology		Total
Remainder of 2015	$	804	$	671	$	642	$	2,117
2016	3,317		2,687		2,566		8,570
2017	2,873		2,340		2,034		7,247
2018	2,081		2,274		1,492		5,847
2019	1,789		1,897		1,492		5,178
Thereafter	1,020		4,044		3,792		8,856
Total future amortization expense	$	11,884	$	13,913	$	12,018	$	37,815