Certain Financial Statement Information (Tables)

12 Months Ended

Mar. 31, 2014

Certain Financial Statement Information [Abstract]

Schedule of Accounts receivable

Accounts receivable:

	March 31,
	2014			2013
	(In thousands)
Accounts receivable	$	25,629		$	25,278
Less: allowance for bad debts	(451		)	(703		)
	$	25,178		$	24,575

Schedule of Inventories

Inventories:

	March 31,
	2014		2013
	(In thousands)
Finished goods	$	9,375	$	7,247
Work in process	6,510		4,098
Raw materials	3,061		1,555
	$	18,946	$	12,900

Schedule of Other current assets

Other current assets:

	March 31,
	2014		2013
	(In thousands)
Prepaid expenses	$	10,978	$	13,762
Executive deferred compensation assets	1,035		693
Deposits	585		828
Proceeds receivable from sale of strategic investment	3,353		1,331
Other	848		1,384
	$	16,799	$	17,998

Schedule of Property and equipment

Property and equipment:

	Useful Life	March 31,
		2014			2013
	(In years)	(In thousands)
Machinery and equipment*	5-7	$	44,503		$	40,063
Leasehold improvements**	1-5	11,574			14,202
Computers, office furniture and equipment	3-7	43,365			43,485
Buildings**	—	—			2,756
Land**	—	—			9,800
		99,442			110,306
Less: accumulated depreciation and amortization		(78,696		)	(75,915		)
		$	20,746		$	34,391

* Includes capitalized mask costs

Schedule of Goodwill

Goodwill is as follows:

	March 31,
	2014		2013
	(In thousands)
Goodwill	$	11,425	$	13,183

Schedule of Purchased intangible assets

Purchase-related intangibles are as follows:

	March 31, 2014								March 31, 2013
	Gross		Accumulated Amortization and Impairments			Net		Weighted average remaining useful life	Gross		Accumulated Amortization and Impairments			Net		Weighted average remaining useful life
	(In thousands)							(In years)	(In thousands)							(In years)
Developed technology/in-process research and development	$	425,000	$	(425,000	)	$	—	0	$	441,300	$	(431,771	)	$	9,529	3.5
Customer relationships	6,330		(6,225		)	105		0.4	12,830		(10,507		)	2,323		2.1
Patents/core technology rights/trade name	62,306		(62,306		)	—		0	63,206		(63,067		)	139		0.3
	$	493,636	$	(493,531	)	$	105		$	517,336	$	(505,345	)	$	11,991

Schedule of Estimated future amortization expense of purchased intangible assets

The estimated future amortization expense of purchased intangible assets to be charged to operating expenses as of March 31, 2014, was as follows (in thousands):

	Operating Expenses
Fiscal Years Ending March 31, 2015	$	105

Schedule of Other assets

Other Assets:

	March 31,
	2014		2013
	(In thousands)
Non-current portion of prepaid expenses	$	4,235	$	7,866
Strategic investments*	3,000		3,000
Other	$	519	$	—
	$	7,754	$	10,866

Schedule of Other accrued liabilities

Other accrued liabilities:

	March 31,
	2014		2013
	(In thousands)
Employee related liabilities	$	1,733	$	2,236
Executive deferred compensation	1,314		1,284
Income taxes	962		903
Professional fees	1,259		3,840
Other	5,609		2,467
	$	10,877	$	10,730

Schedule of Warranty reserve activity

The following table summarizes warranty reserve activity:

	March 31,
	2014			2013
	(In thousands)
Beginning balance	$	220		$	454
Charged (capitalized) to costs of revenues	58			(94		)
Costs incurred	(79		)	(140		)
Ending balance	$	199		$	220

Schedule of Interest income, net and other-than-temporary impairment

Interest income (expense), net and other-than-temporary impairments:

	Fiscal Years Ended March 31,
	2014		2013			2012
	(In thousands)
Interest income	$	1,692	$	2,347		$	3,601
Net realized gain on short-term investments	3,360		1,391			646
Impairments of short-term investments and marketable securities	—		(1,143		)	—
	$	5,052	$	2,595		$	4,247

Schedule of Other income (expense), net

Other income (expense), net:

	Fiscal Years Ended March 31,
	2014		2013			2012
	(In thousands)
Net (impairment) gain on strategic investments*	$	—	$	(2,250	)	$	7,147
Impairment of notes receivable and other assets**	—		(1,800		)	—
Net (loss) gain on disposals of property	67		(21		)	(10		)
Other, net	287		1,677			300
	$	354	$	(2,394	)	$	7,437

Schedule of Reconciliation of shares used to calculate basic and diluted net loss per share

The reconciliation of shares used to calculate basic and diluted net loss per share consists of the following (in thousands, except per share data):

	Fiscal Years Ended March 31,
	2014			2013			2012
Net loss	$	(5,694	)	$	(134,115	)	$	(82,688	)
Shares used in net loss per share computation:
Weighted average common shares outstanding, basic	72,897			65,258			62,245
Net effect of dilutive common share equivalents	—			—			—
Weighted average common shares outstanding, diluted	72,897			65,258			62,245
Basic and diluted net loss per share	$	(0.08	)	$	(2.06	)	$	(1.33	)