Certain Financial Statement Information (Tables)

6 Months Ended

Sep. 30, 2012

Certain Financial Statement Information [Abstract]

Schedule of Accounts receivable

Accounts receivable:

	September 30, 2012			March 31, 2012
	(In thousands)
Accounts receivable	$	15,211		$	23,765
Less: allowance for bad debts		(936	)		(1,099	)
	$	14,275		$	22,666

Schedule of Inventories

Inventories:

	September 30, 2012		March 31, 2012
	(In thousands)
Finished goods	$	14,436	$	17,883
Work in process		3,338		3,818
Raw materials		663		1,543
	$	18,437	$	23,244

Schedule of Other current assets

Other current assets:

	September 30, 2012		March 31, 2012
	(In thousands)
Prepaid expenses	$	21,388	$	20,353
Executive deferred compensation assets		1,362		1,344
Deposits		897		899
Proceeds receivable on sale of strategic investment		—		7,100
Other		2,803		1,409
	$	26,450	$	31,105

Schedule of Property and equipment

Property and equipment:

	Useful Life		September 30, 2012			March 31, 2012
	(In years)		(In thousands)
Machinery and equipment		5-7	$	36,732		$	36,600
Leasehold improvements		1-15		17,405			14,228
Computers, office furniture and equipment		3-7		43,031			43,929
Buildings		31.5		2,756			2,756
Land		—		9,800			9,800
				109,724			107,313
Less: accumulated depreciation and amortization				(71,866	)		(69,213	)
			$	37,858		$	38,100

Schedule of Goodwill

Goodwill and purchased intangibles:

Goodwill is as follows:

	(In thousands)
Goodwill related to TPack acquisition, as of September 30, 2012 and March 31 2012	$	13,183

Schedule of Purchased Intangible assets

Purchase-related intangibles were as follows:

	September 30, 2012									March 31, 2012
	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	$	441,300	$	(430,413	)	$	10,887		4.0	$	441,300	$	(429,054	)	$	12,246		4.6
Customer relationships		12,830		(9,982	)		2,848		2.8		12,830		(8,881	)		3,949		2.9
Patents/core technology rights/tradename		63,206		(62,917	)		289		1.0		63,206		(62,767	)		439		1.5
	$	517,336	$	(503,312	)	$	14,024			$	517,336	$	(500,702	)	$	16,634

Schedule of Estimated Future Amortization Expense of Purchased Intangible Assets

As of September 30, 2012, the estimated future amortization expense of purchased intangible assets to be charged to cost of sales and operating expenses was as follows (in thousands):

	Cost of Sales		Operating Expenses		Total
Fiscal Years Ending March 31,
2013 (remaining)	$	1,358	$	675	$	2,033
2014		2,717		1,189		3,906
2015		2,717		904		3,621
2016		2,717		369		3,086
2017 and thereafter		1,378		—		1,378
Total	$	10,887	$	3,137	$	14,024

Schedule of Other assets

Other assets:

	September 30, 2012		March 31, 2012
	(In thousands)
Non-current portion of prepaid expenses	$	5,769	$	4,193
Strategic investments		5,250		4,750
Other		—		1,331
	$	11,019	$	10,274

Schedule of Other Accrued Liabilities

Other accrued liabilities:

	September 30, 2012		March 31, 2012
	(In thousands)
Customer deposits*	$	75	$	415
Employee related liabilities		2,333		2,051
Executive deferred compensation		1,362		1,344
Income taxes		1,428		1,401
Professional fees		1,278		961
Contingent consideration		—		618
Other		1,730		2,262
	$	8,206	$	9,052

* Includes credit balances in Accounts Receivable that have been reclassified as Other Accrued Liabilities

Schedule of Cash, Cash Equivalents and Available-For-Sale Investments by Type of Instruments

Short-term investments:

The following is a summary of cash, cash equivalents and available-for-sale investments by type of instruments (in thousands):

	September 30, 2012								March 31, 2012
	Amortized Cost		Gross Unrealized				Estimated Fair Value		Amortized Cost		Gross Unrealized				Estimated Fair Value
			Gains		Losses						Gains		Losses
Cash	$	9,902	$	—	$	—	$	9,902	$	15,057	$	—	$	—	$	15,057
Cash equivalents		2,090		—		—		2,090		13,008		—		—		13,008
U.S. Treasury securities and agency bonds		17,533		23		1		17,555		16,771		11		19		16,763
Corporate bonds		20,485		95		6		20,574		23,361		56		10		23,407
Mortgage-backed and asset-backed securities*		3,942		398		26		4,314		7,308		364		61		7,611
Closed-end bond funds		23,705		5,760		1,097		28,368		26,401		5,161		1,649		29,913
Preferred stock		4,878		2,006		—		6,884		6,209		1,878		—		8,087
	$	82,535	$	8,282	$	1,130	$	89,687	$	108,115	$	7,470	$	1,739	$	113,846
Reported as:
Cash and cash equivalents							$	11,992							$	28,065
Short-term investments available-for-sale								77,695								85,781
							$	89,687							$	113,846

* At September 30, 2012 and March 31, 2012, approximately $2.0 million and $4.6 million of the estimated fair value presented were mortgage-backed securities, respectively.

Schedule of Cash, Cash Equivalents and Available-For-Sale Investments by Type of Instruments Measured at Fair Value on Recurring Basis

The following is a summary of cash, cash equivalents and available-for-sale investments by type of instruments measured at fair value on a recurring basis (in thousands):

	September 30, 2012								March 31, 2012
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash	$	9,902	$	—	$	—	$	9,902	$	15,057	$	—	$	—	$	15,057
Cash equivalents		2,090		—		—		2,090		10,510		2,498		—		13,008
U.S. Treasury securities and agency bonds		17,555		—		—		17,555		16,763		—		—		16,763
Corporate bonds		—		20,574		—		20,574		—		23,407		—		23,407
Mortgage-backed and asset-backed securities		—		4,314		—		4,314		—		7,611		—		7,611
Closed-end bond funds		28,368		—		—		28,368		29,913		—		—		29,913
Preferred stock		—		6,884		—		6,884		—		8,087		—		8,087
	$	57,915	$	31,772	$	—	$	89,687	$	72,243	$	41,603	$	—	$	113,846

Schedule of Cost and Estimated Fair Values of Available-For-Sale Securities with Stated Maturities by Contractual Maturity

The following is a summary of the cost and estimated fair values of available-for-sale securities with stated maturities, which include U.S. Treasury securities and agency bonds, corporate bonds and mortgage-backed and asset-backed securities, by contractual maturity (in thousands):

	September 30, 2012				March 31, 2012
	Cost		Fair Value		Cost		Fair Value
Less than 1 year	$	16,038	$	16,190	$	16,683	$	16,722
Mature in 1 – 2 years		24,201		24,284		26,869		27,026
Mature in 3 – 5 years		484		522		2,421		2,496
Mature after 5 years		1,237		1,447		1,467		1,537
	$	41,960	$	42,443	$	47,440	$	47,781

Schedule of Gross Unrealized Losses

The following is a summary of gross unrealized losses (in thousands):

	Less Than 12 Months of Unrealized Losses				12 Months or More of Unrealized Losses				Total
As of September 30, 2012	Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses
U.S. Treasury securities and agency bonds	$	2,456	$	—	$	—	$	—	$	2,456	$	—
Corporate bonds		898		4		248		2		1,146		6
Mortgage-backed and asset-backed securities		723		8		232		18		955		26
Closed-end bond funds		—		—		7,180		1,098		7,180		1,098
	$	4,077	$	12	$	7,660	$	1,118	$	11,737	$	1,130
	Less Than 12 Months of Unrealized Losses				12 Months or More of Unrealized Losses				Total
As of March 31, 2012	Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses
U.S. Treasury securities and agency bonds	$	8,938	$	19	$	—	$	—	$	8,938	$	19
Corporate bonds		5,463		10		—		—		5,463		10
Mortgage-backed and asset-backed securities		894		20		353		42		1,247		62
Closed-end bond funds		—		—		6,628		1,648		6,628		1,648
	$	15,295	$	49	$	6,981	$	1,690	$	22,276	$	1,739

Schedule of Warranty Reserve Activity

The following table summarizes warranty reserve activity (in thousands):

	Three Months Ended September 30,						Six Months Ended September 30,
	2012			2011			2012			2011
Beginning balance	$	447		$	197		$	454		$	176
Charged to costs of revenues		85			99			215			305
Charges incurred		(162	)		(52	)		(299	)		(237	)
Ending balance	$	370		$	244		$	370		$	244

Schedule of Interest Income, Net

Interest income, net (in thousands):

	Three Months Ended September 30,				Six Months Ended September 30,
	2012		2011		2012		2011
Interest income	$	568	$	1,127	$	1,230	$	2,089
Net realized gain on short-term investments		177		342		1,194		661
	$	745	$	1,469	$	2,424	$	2,750

Schedule of Other Income, Net

Other income, net (in thousands):

	Three Months Ended September 30,					Six Months Ended September 30,
	2012			2011		2012			2011
Net loss on disposals of property	$	(3	)	$	—	$	(10	)	$	(10	)
Other, net		93			48		183			133
	$	90		$	48	$	173		$	123

Schedule of Reconciliation of Shares Used to Calculate Basic and Diluted Net (Loss) Income 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):

	Three Months Ended September 30,						Six Months Ended September 30,
	2012			2011			2012			2011
Net loss	$	(21,557	)	$	(1,152	)	$	(44,947	)	$	(8,029	)
Shares used in net loss per share computation:
Weighted average common shares outstanding, basic		64,947			62,526			63,678			63,202
Net effect of dilutive common share equivalents		—			—			—			—
Weighted average common shares outstanding, diluted		64,947			62,526			63,678			63,202
Basic and diluted net loss per share	$	(0.33	)	$	(0.02	)	$	(0.71	)	$	(0.13	)