Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2011

Balance Sheet Detail

Schedule of prepaid expenses and other assets

	December 31
	2011		2010
Prepaid commission	$	7,471	$	5,729
Prepaid royalty		1,121		803
Prepaid contract expense		8,858		6,043
Tenant improvement allowance		—		182
Other		6,210		5,107
Total prepaid expenses and other	$	23,660	$	17,864

Schedule of property and equipment

	December 31
	2011			2010
Computer equipment—hardware	$	27,359		$	23,726
Computer equipment—software		25,092			23,783
Leasehold improvements		34,371			31,678
Furniture and fixtures		9,001			7,866
Construction in process		1,631			1,316
Property and equipment, gross	$	97,454		$	88,369
Accumulated depreciation		(55,153	)		(46,845	)
Property and equipment, net	$	42,301		$	41,524

Schedule of changes in the carrying value of goodwill

	Goodwill
Balance at December 31, 2009	$	144,827
Additions		3,175
Translation adjustments		(2,422	)
Balance at December 31, 2010	$	145,580
Additions		60,206
Translation adjustments		(1,165	)
Balance at December 31, 2011	$	204,621

Schedule of intangible assets

	Weighted Average Amortization Period (Years)		Other Intangibles, Gross		Accumulated Amortization			Other Intangibles, Net
Purchased technologies		5.1	$	50,661	$	(24,777	)	$	25,884
Product development costs		3.0		16,202		(12,278	)		3,924
Developed technology sub-total				66,863		(37,055	)		29,808
Customer relationships		6.4		40,917		(24,164	)		16,753
Other intangibles		4.1		4,642		(1,682	)		2,960
Other intangibles sub-total				45,559		(25,846	)		19,713
Balance at December 31, 2011			$	112,422	$	(62,901	)	$	49,521

	Weighted Average Amortization Period (Years)		Other Intangibles, Gross		Accumulated Amortization			Other Intangibles, Net
Purchased technologies		5.0	$	28,118	$	(18,730	)	$	9,388
Product development costs		3.0		13,714		(9,477	)		4,237
Developed technology sub-total				41,832		(28,207	)		13,625
Customer relationships		6.0		27,589		(22,006	)		5,583
Other intangibles		4.0		1,585		(1,021	)		564
Other intangibles sub-total				29,174		(23,027	)		6,147
Balance at December 31, 2010			$	71,006	$	(51,234	)	$	19,772

Schedule of changes in the carrying value of intangible assets

	Gross			Accumulated Amortization			Net
Balance at December 31, 2009	$	66,569		$	(43,604	)	$	22,965
Additions		4,369			—			4,369
Stock-based compensation additions		102			—			102
Amortization		—			(7,646	)		(7,646	)
Translation adjustments		(34	)		16			(18	)
Balance at December 31, 2010	$	71,006		$	(51,234	)	$	19,772
Additions		41,736			—			41,736
Stock-based compensation additions		131			—			131
Amortization		—			(11,627	)		(11,627	)
Translation adjustments		(451	)		(40	)		(491	)
Balance at December 31, 2011	$	112,422		$	(62,901	)	$	49,521

Schedule of amortization of the entity's developed technology and other intangible assets

	Fiscal Years
	2011		2010		2009
Developed technology:
Amortization—purchased technologies	$	6,019	$	3,325	$	3,128
Amortization—product development costs		2,801		3,049		2,490
Amortization of developed technology		8,820		6,374		5,618
Other intangibles:
Amortization—customer relationships		2,146		970		1,336
Amortization—other intangibles		661		302		330
Amortization of other intangibles		2,807		1,272		1,666
Total amortization	$	11,627	$	7,646	$	7,284

Schedule of estimated future amortization

	Fiscal Years
	2012		2013		2014		2015		2016		Thereafter		Total
Estimated future amortization of:
Developed technology	$	9,828	$	8,027	$	4,936	$	4,317	$	2,513	$	187	$	29,808
Other intangibles		3,818		3,772		3,380		3,226		2,694		2,823		19,713
Total	$	13,646	$	11,799	$	8,316	$	7,543	$	5,207	$	3,010	$	49,521

Schedule of other assets

	December 31
	2011		2010
Long-term investments	$	—	$	500
Long-term prepaid commissions		5,587		3,756
Deposits		2,697		2,889
Prepaid contract expense, long-term		7,643		4,914
Total other assets	$	15,927	$	12,059

Schedule of accrued liabilities

	December 31
	2011		2010
Salaries and benefits payable	$	26,299	$	22,236
Accrued restructuring, current portion		1,050		809
Other		12,680		11,035
Total accrued liabilities	$	40,029	$	34,080

Schedule of other long-term liabilities

	December 31
	2011		2010
Deferred rent	$	10,631	$	11,123
Accrued restructuring, long-term portion		—		531
Long-term deferred tax liability		2,930		534
Other		3,383		2,656
Total other long-term liabilities	$	16,944	$	14,844

Schedule of components of accumulated other comprehensive income

	December 31
	2011			2010
Accumulated net unrealized gain (loss) on marketable securities	$	(13	)	$	7
Accumulated foreign currency translation adjustments		6,883			8,608
Accumulated other comprehensive income, net of taxes	$	6,870		$	8,615