Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Intangible Assets [Abstract]

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The estimated future amortization expense of purchased intangible assets as of December 31, 2013 is as follows (in thousands):

For the Years Ending December 31,	Estimated Intangible Amortization Amount
2014	$	13,281
2015	12,901
2016	12,747
2017	10,714
2018	4,870
Thereafter	1,997
Total estimated future amortization expense	$	56,510

Schedule of Intangible Assets and Goodwill

The following tables summarize the Company’s total purchased intangible assets (in thousands):

	Gross		Accumulated Amortization			Net
December 31, 2013
Purchased technology	$	114,754	$	(79,189	)	$	35,565
Patents	6,472		(6,472		)	—
Customer lists	37,000		(21,997		)	15,003
Trade names	11,536		(5,594		)	5,942
Backlog	2,127		(2,127		)	—
Total intangible assets	$	171,889	$	(115,379	)	$	56,510
December 31, 2012
Purchased technology	$	114,754	$	(70,815	)	$	43,939
Patents	6,472		(6,450		)	22
Customer lists	37,000		(17,543		)	19,457
Trade names	11,536		(4,670		)	6,866
Backlog	2,127		(2,127		)	—
Total intangible assets	$	171,889	$	(101,605	)	$	70,284