Income Taxes (Tables)

12 Months Ended

Jun. 30, 2013

Income Taxes

Reconciliation of the Company's expected tax benefit, as computed by applying the U.S. federal corporate tax rate to loss before the benefit for income taxes, and actual tax

The difference between the Company's expected tax benefit, as computed by applying the U.S. federal corporate tax rate of 34% to loss before the benefit for income taxes, and actual tax is reconciled in the following chart (in thousands):

	Year Ended June 30,
	2013			2012			2011
Loss before income tax expense	$	(72,811	)	$	(73,319	)	$	(58,274	)
Expected tax benefit at 34%	$	(24,756	)	$	(24,928	)	$	(19,813	)
Permanent differences		1,540			1,469			—
State tax benefit net of federal benefit		(3,921	)		(4,204	)		(1,815	)
Increase in valuation allowance, net		25,192			26,574			16,410
Expired loss and credit carryforwards		1,945			1,089			5,610
Other		—			—			(392	)
Benefit for income taxes	$	—		$	—		$	—

Schedule of significant components of deferred tax assets

Significant components of the Company's deferred tax assets as of June 30, 2013 and 2012 are as follows (in thousands):

	June 30,
	2013			2012
Net operating loss carryforwards	$	121,937		$	98,601
Research and development tax credit carryforwards		12,806			10,393
Property and other intangible assets		2,077			1,486
Deferred revenue		25,484			28,325
Stock-based compensation		5,759			3,302
Deferred lease incentive		4,771			5,100
Other liabilities		508			512
Total deferred tax assets	$	173,342		$	147,719
Valuation allowance		(173,342	)		(147,719	)
Net deferred tax assets	$	—		$	—