Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill Activity

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

	Thirteen Weeks Ended
	March 31, 2013			April 1, 2012
Balance, beginning of period	$	131,320		$	58,053
Goodwill additions	—			21,989
Goodwill adjustments	(3,148		)	461
Balance, end of period	$	128,172		$	80,503

Schedule of Finite-Lived Intangible Assets by Major Class

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

	March 31, 2013			December 31, 2012
Patents, trademarks and other	$	22,222		$	22,047
Accumulated amortization	(6,567		)	(5,743		)
Net patents, trademarks and other	15,655			16,304
Customer relationships	19,709			20,305
Accumulated amortization	(1,676		)	(1,171		)
Net customer relationships	18,033			19,134
Developed technology	17,355			17,686
Accumulated amortization	(2,295		)	(1,771		)
Net developed technology	15,060			15,915
Note issuance costs	2,445			2,445
Accumulated amortization	(2,387		)	(2,299		)
Net note issuance costs	58			146
Total intangible assets included in other long-term assets	$	48,806		$	51,499

Schedule of Amortization Expense by Major Class

Amortization expense was as follows (in thousands):

	Thirteen Weeks Ended
	March 31, 2013		April 1, 2012
Patents, trademarks and other	$	919	$	427
Customer relationships	505		—
Developed technology	524		338
Note issuance costs	87		87
Total amortization expense	$	2,035	$	852

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

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		Note Issuance Costs		Total
Remainder of 2013	$	2,360	$	1,615	$	1,648	$	58	$	5,681
2014	2,797		2,153		2,197		—		7,147
2015	2,682		2,153		2,197		—		7,032
2016	2,497		2,153		2,197		—		6,847
2017	1,947		1,806		1,935		—		5,688
Thereafter	3,372		8,153		4,886		—		16,411
Total future amortization expense	$	15,655	$	18,033	$	15,060	$	58	$	48,806