Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure Text Block [Abstract]

Schedule of prepaid royalties, future amortization expense

Amortization of these licenses is estimated as follows (in thousands):

Year Ending:
2013	1,008
2014	771
2015	498
2016	389
2017	334
Thereafter	645
	$	3,645

Schedule of prepaid expenses and other current assets

Prepaid Expenses and Other Current Assets

	December 31,
	2012		2011
	(in thousands)
Prepaid service contracts – current portion	$	5,771	$	4,727
Deferred costs	3,278		717
Prepaid income taxes	—		1,952
Other prepaid expenses and current assets	6,219		6,474
	$	15,268	$	13,870

Schedule of property and equipment

Property and Equipment

	December 31,
	2012			2011
	(in thousands)
Computer and other equipment	$	135,181		$	102,061
Software	17,342			12,579
Leasehold improvements	11,009			9,559
Building construction-in-progress	6,372			—
Furniture and fixtures	4,075			3,762
Capitalized software and website development costs	49,013			35,842
	222,992			163,803
Less: Accumulated depreciation and amortization	(130,325		)	(109,680		)
Net property and equipment	$	92,667		$	54,123

Schedule of intangible assets

Intangible assets are comprised of the following at December 31:

	Weighted Average Useful Life	December 31,
		2012			2011
		(in thousands)
Purchased technology	10 years	$	99,003		$	76,843
Less: accumulated amortization		(23,153		)	(12,771		)
		75,850			64,072
Customer relationships	6 years	60,066			35,235
Less: accumulated amortization		(13,902		)	(4,742		)
		46,164			30,493
Licenses and other	3 years	871			871
Less: accumulated amortization		(616		)	(420		)
		255			451
Total		$	122,269		$	95,016

Schedule of intangible assets, future amortization expense

Amortization of existing intangible assets is estimated to be as follows (in thousands):

Year Ending:
2013	$	23,911
2014	22,980
2015	20,191
2016	14,019
2017	11,530
Thereafter	29,638
	$	122,269

Schedule of goodwill

Changes in the carrying amount of goodwill are as follows (in thousands):

Balance, December 31, 2010	$	11,163
Acquisition of business	329,245
Goodwill adjustments	—
Balance, December 31, 2011	340,408
Acquisition of business	17,941
Goodwill adjustments	—
Balance, December 31, 2012	$	358,349

Schedule of accrued liabilities

Accrued Liabilities

	December 31,
	2012		2011
	(in thousands)
Accrued production costs	$	22,534	$	16,939
Accrued marketing expenses	21,371		19,072
Accrued income and sales tax	15,002		11,106
Accrued compensation	13,904		5,485
Accrued consulting	4,200		2,347
Accrued purchases	3,685		871
Accrued fixed assets	1,554		633
Accrued other	6,222		2,818
	$	88,472	$	59,271