Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 29, 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 were as follows (in thousands):



	March 29, 2015			December 31, 2014
Patents, trademarks and other	$	24,225		$	25,333
Accumulated amortization	(12,734		)	(12,805		)
Net patents, trademarks and other	11,491			12,528
Customer relationships	21,657			21,739
Accumulated amortization	(6,187		)	(5,863		)
Net customer relationships	15,470			15,876
Developed technology	31,562			33,525
Accumulated amortization	(8,295		)	(7,818		)
Net developed technology	23,267			25,707
Total intangible assets included in other long-term assets	$	50,228		$	54,111

Amortization expense was as follows (in thousands):



	Thirteen Weeks Ended
	March 29, 2015		March 30, 2014
Patents, trademarks and other	$	1,071	$	1,001
Customer relationships	639		666
Developed technology	853		887
Total amortization expense	$	2,563	$	2,554

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
2015	$	2,632	$	2,054	$	2,692	$	7,378
2016	2,812		2,740		3,589		9,141
2017	2,367		2,393		3,368		8,128
2018	1,584		2,355		2,940		6,879
2019	1,296		1,868		2,322		5,486
Thereafter	800		4,060		8,356		13,216
Total future amortization expense	$	11,491	$	15,470	$	23,267	$	50,228