Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill Activity

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

	Year Ended December 31,
	2012		2011
Balance, beginning of period	$	58,053	$	44,800
Additions	69,398		13,272
Goodwill adjustments	3,869		(19		)
Balance, end of period	$	131,320	$	58,053

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):

	December 31,
	2012			2011
Patents, trademarks and other	$	22,047		$	7,744
Accumulated amortization	(5,743		)	(3,698		)
Net patents, trademarks and other	16,304			4,046
Customer relationships	20,305			152
Accumulated amortization	(1,171		)	(3		)
Net customer relationships	19,134			149
Developed technology	17,686			2,303
Accumulated amortization	(1,771		)	(55		)
Net developed technology	15,915			2,248
Note issuance costs	2,445			2,445
Accumulated amortization	(2,299		)	(1,950		)
Net note issuance costs	146			495
Total intangible assets included in other long-term assets	$	51,499		$	6,938

Schedule of Amortization Expense by Major Class

Amortization expense was as follows (in thousands):

	Year Ended December 31,
	2012		2011		2010
Purchased technology	$	—	$	—	$	358
Patents, trademarks and other	1,993		1,342		1,167
Customer relationships	1,168		3		—
Developed technology	1,716		55		—
Note issuance costs	350		350		497
Total amortization expense	$	5,227	$	1,750	$	2,022

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
2013	$	3,110	$	2,213	$	2,236	$	146	$	7,705
2014	2,769		2,213		2,236		—		7,218
2015	2,655		2,213		2,236		—		7,104
2016	2,470		2,213		2,236		—		6,919
2017	1,921		1,866		1,966		—		5,753
Thereafter	3,379		8,416		5,005		—		16,800
Total future amortization expense	$	16,304	$	19,134	$	15,915	$	146	$	51,499