Income Taxes (Tables)

12 Months Ended

Mar. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income Before Income Tax

Loss from operations before income tax consists of the following (in thousands):

	Fiscal Years Ended March 31,
	2014			2013			2012
Loss from operations before income tax:
Domestic loss	$	(8,976	)	$	(130,552	)	$	(78,630	)
Foreign income (loss)	3,901			(4,117		)	(3,130		)
	$	(5,075	)	$	(134,669	)	$	(81,760	)

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) from operations consists of the following (in thousands):

	Fiscal Years Ended March 31,
	2014			2013			2012
Current:
Federal	$	(20	)	$	(1,106	)	$	147
Foreign	819			847			1,034
State	6			(129		)	60
Total Current	805			(388		)	1,241
Deferred:
Foreign	(186		)	(166		)	(313		)
State	—			—			—
Total Deferred	(186		)	(166		)	(313		)
	$	619		$	(554	)	$	928

Schedule of Effective Income Tax Rate Reconciliation

The provision (benefit) for income taxes reconciles to the amount computed by applying the federal statutory rate of 35% to the loss before income taxes as follows for operations (in thousands):

	Fiscal Years Ended March 31,
	2014					2013					2012
	$			%		$			%		$			%
Tax at federal statutory rate	$	(1,776	)	35	%	$	(47,134	)	35	%	$	(28,613	)	35	%
Tax benefit from loss from continuing operations	—			—		(925		)	1		(123		)	—
Other permanent differences	(6,561		)	129		1,195			(1	)	2,295			(3	)
State taxes, net of federal benefit	(214		)	4		(7,263		)	5		(3,937		)	5
Federal tax credits	(1,778		)	35		(1,909		)	1		(4,131		)	5
State tax credits	(444		)	9		(537		)	—		(622		)	1
Veloce accrued liability	16,740			(330	)	26,749			(20	)	24,046			(29	)
Sale of TPack	2,688			(53	)	—			—		—			—
Valuation allowance	(7,809		)	154		28,715			(21	)	11,600			(14	)
Change in contingency reserve	(64		)	1		74			—		52			—
Other	(163		)	4		481			—		361			(1	)
	$	619		(12	)%	$	(554	)	—	%	$	928		(1	)%

Schedule of Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities for federal and state income taxes are as shown below (in thousands):

	Fiscal Years Ended March 31,
	2014			2013
Deferred tax assets:
Net operating loss carryforwards	$	294,910		$	310,276
Research and development credit carryforwards	79,839			78,696
Inventory write-downs and other reserves	8,068			9,046
Capitalization of research and development costs	5,915			8,038
Goodwill	4,007			7,431
Intangible assets	32,290			40,201
Investment impairment	3,494			4,958
Stock-based compensation	26,664			31,177
Depreciation and amortization	3,253			165
Other	1,182			1,056
Total deferred tax assets	459,622			491,044
Valuation allowance	(459,081		)	(490,629		)
	$	541		$	415

Schedule of Unrecognized Tax Benefits Roll Forward

The following is a tabular reconciliation of the Unrecognized Tax Benefits activity during the fiscal year ended March 31, 2014 (in thousands):

Opening Balance	$	43,382
Gross decreases - tax positions in prior period	60
Gross increases - current-period tax positions	789
Ending Balance	$	44,231