Income Taxes (Tables)

12 Months Ended

Mar. 31, 2016

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,
	2016			2015			2014
Income (loss) from operations before income tax:
Domestic loss	$	(35,864	)	$	(53,706	)	$	(8,976	)
Foreign income	2,669			2,740			3,901
	$	(33,195	)	$	(50,966	)	$	(5,075	)

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,
	2016			2015			2014
Current:
Federal	$	(16	)	$	(17	)	$	(20	)
Foreign	(633		)	1,206			819
State	8			(1		)	6
Total Current	(641		)	1,188			805
Deferred:
Foreign	17			(96		)	(186		)
Total Deferred	17			(96		)	(186		)
	$	(624	)	$	1,092		$	619

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,
	2016					2015					2014
	$			%		$			%		$			%
Tax at federal statutory rate	$	(11,618	)	35	%	$	(17,838	)	35	%	$	(1,776	)	35	%
Other permanent differences	1,293			(4	)	979			(2	)	(6,561		)	129
State taxes, net of federal benefit	(1,291		)	4		(2,345		)	5		(214		)	4
Federal tax credits	(1,790		)	5		(1,553		)	3		(1,778		)	35
State tax credits	(403		)	1		(460		)	1		(444		)	9
Veloce accrued liability	—			—		3,655			(7	)	16,740			(330	)
Refundable credits	(17		)	—		(16		)	—		—			—
Sale of TPack	—			—		—			—		2,688			(53	)
Valuation allowance	13,102			(43	)	18,445			(36	)	(7,809		)	154
Change in contingency reserve	(612		)	2		(67		)	—		(64		)	1
Other	712			2		292			(1	)	(163		)	4
	$	(624	)	2	%	$	1,092		(2	)%	$	619		(12	)%

Schedule of Deferred Tax Assets and Liabilities

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

	Fiscal Years Ended March 31,
	2016			2015
Deferred tax assets:
Net operating loss carryforwards	$	356,106		$	315,773
Research and development credit carryforwards	84,259			81,546
Inventory write-downs and other reserves	7,656			7,642
Capitalization of research and development costs	7,348			6,245
Goodwill	2,207			3,147
Intangible assets	19,142			26,031
Investment impairment	3,583			3,982
Stock-based compensation	5,188			28,921
Depreciation and amortization	2,548			1,903
Other	1,174			970
Total deferred tax assets	489,211			476,160
Valuation allowance	(488,646		)	(475,545		)
Net deferred tax asset	$	565		$	615

Schedule of Unrecognized Tax Benefits Roll Forward

The following is a tabular reconciliation of the unrecognized tax benefits activity (in thousands):

	March 31,
	2016			2015		2014
Opening Balance	$	45,079		$	44,231	$	43,382
Gross increases - tax positions in prior periods	—			122		60
Gross decreases - tax positions in prior period	(916		)	—		—
Gross increases - current-period tax positions	772			726		789
Ending Balance	$	44,935		$	45,079	$	44,231