Income Taxes (Tables)

12 Months Ended

Jul. 31, 2011

Income Taxes [Abstract]

Income (loss) before income tax provision

	Years Ended July 31,
	2011			2010			2009
	(In thousands)
Domestic	$	25		$	(36,628	)	$	(24,762	)
International		(972	)		3,358			2,137
Loss before provision for income taxes	$	(947	)	$	(33,270	)	$	(22,625	)

Components of provision for income taxes

	Years Ended July 31,
	2011			2010			2009
	(In thousands)
Current
Federal	$	(126	)	$	(283	)	$	15
State		99			231			260
Foreign		1,241			874			513
Total current provision for income taxes		1,213			822			788
Deferred
Federal		(59,614	)		(85	)		—
State		(12,428	)		(9	)		—
Foreign		(806	)		—			—
Total deferred provision for income taxes		(72,848	)		(94	)		—
Total provision for (benefit from) income taxes	$	(71,635	)	$	728		$	788

Tax effects of temporary differences

	As of July 31,
	2011			2010
	(In thousands)
Deferred tax assets
Current
Net operating loss carryforwards	$	24,295		$	—
Capital loss		75			—
Research and development credits		6,255			—
Accruals and reserves		22,992			31,373
Total deferred tax assets		53,618			31,373
Valuation allowance		(235	)		(31,279	)
Unrealized loss in other comprehensive income		(73	)		(94	)
Net deferred tax assets, current		53,310			—
Non-current
Net operating loss carryforwards		—			18,504
Capital loss		—			77
Research and development credits		14,119			11,653
Depreciation and amortization		—			345
Accruals and reserves		6,024			5,714
Total deferred tax assets		20,143			36,293
Valuation allowance		—			(36,293	)
Net deferred tax assets, non-current		20,143			—
Net deferred tax assets		73,453			—
Deferred tax liabilities
Non-current
Depreciation and amortization		(808	)		—
Book/tax basis in acquired assets		(7	)		—
Total deferred tax liabilities		(815	)		—
Net deferred tax asset (liability)	$	72,638		$	—

Differences between provision for income taxes and Company's actual provision for income taxes

	Years Ended July 31,
	2011			2010			2009
Federal income tax provision		(35.0	)%		(34.0	)%		(34.0	)%
State income tax provision (benefit), net of federal benefit		(3.3	)%		(3.5	)%		0.0	%
Foreign taxes		58.3	%		(0.9	)%		(1.2	)%
Stock compensation and warrant expense		452.4	%		6.0	%		10.6	%
Non-deductible expenses		(26.3	)%		3.0	%		(5.3	)%
Research and developments credits		(900.1	)%		(6.5	)%		(8.6	)%
Change in valuation allowance		(7,114.1	)%		38.1	%		41.9	%
Total provision for (benefit from) income taxes		(7,568.1	)%		2.2	%		3.4	%

Reconciliation of the beginning and ending amount of the consolidated liability for unrecognized tax benefits

	Amount
	(In thousands)
Balance at July 31, 2008	$	3,666
Additions for tax positions related to current year		1,458
Balance at July 31, 2009		5,124
Additions for tax positions related to current year		1,212
Reductions for tax positions related to prior year		(16	)
Balance at July 31, 2010		6,320
Additions for tax positions related to current year		4,478
Additions for tax positions related to prior year		199
Reductions for tax positions related to prior year		(129	)
Balance at July 31, 2011	$	10,868