Certain Financial Statement Information (Tables)

3 Months Ended

Jun. 30, 2015

Certain Financial Statement Information [Abstract]

Schedule of Accounts receivable

Accounts receivable, net:

	June 30, 2015			March 31, 2015
	(In thousands)
Accounts receivable	$	11,803		$	12,709
Less: allowance for bad debts	(277		)	(302		)
	$	11,526		$	12,407

Schedule of Inventories

Inventories:

	June 30, 2015		March 31, 2015
	(In thousands)
Finished goods	$	10,305	$	15,310
Work in process	5,250		5,377
Raw materials	4,248		2,827
	$	19,803	$	23,514

Schedule of Other current assets

Other current assets:

	June 30, 2015		March 31, 2015
	(In thousands)
Prepaid expenses	$	13,790	$	14,847
Executive deferred compensation assets	1,003		1,004
Other	872		989
	$	15,665	$	16,840

Schedule of Property and equipment

Property and equipment:

	Useful Life	June 30, 2015			March 31, 2015
	(In years)	(In thousands)
Machinery and equipment	3-5	$	38,895		$	37,286
Leasehold improvements	1-5	7,526			9,909
Computers, office furniture and equipment	3-5	32,996			32,902
		79,417			80,097
Less: accumulated depreciation and amortization		(64,190		)	(63,348		)
		$	15,227		$	16,749

Schedule of Goodwill

	June 30, 2015		March 31, 2015
	(In thousands)
Goodwill	$	11,425	$	11,425

Schedule of Other assets

Other assets:

	June 30, 2015		March 31, 2015
	(In thousands)
Non-current portion of prepaid expenses	$	578	$	1,974
Other	595		596
	$	1,173	$	2,570

Schedule of Other accrued liabilities

Other accrued liabilities:

	June 30, 2015		March 31, 2015
	(In thousands)
Employee related liabilities	$	1,383	$	1,454
Executive deferred compensation	1,028		1,025
Income taxes	852		1,311
Professional fees	761		515
Other	4,179		3,339
	$	8,203	$	7,644

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 instrument (in thousands):

	June 30, 2015									March 31, 2015
	Amortized Cost		Gross Unrealized					Estimated Fair Value		Amortized Cost		Gross Unrealized					Estimated Fair Value
			Gains		Losses							Gains		Losses
Cash	$	35,209	$	—	$	—		$	35,209	$	33,936	$	—	$	—		$	33,936
Cash equivalents	9,081		—		—			9,081		2,559		—		—			2,559
U.S. Treasury securities and agency bonds	985		—		—			985		1,230		—		—			1,230
Corporate bonds	10,918		17		(13		)	10,922		10,772		28		(6		)	10,794
Mortgage-backed securities	—		6		—			6		—		15		—			15
Municipal bonds	267		—		—			267		—		—		—			—
Mutual funds	19,849		391		(110		)	20,130		24,895		1,955		(59		)	26,791
Preferred stock	5		11		—			16		11		22		—			33
	$	76,314	$	425	$	(123	)	$	76,616	$	73,403	$	2,020	$	(65	)	$	75,358
Reported as:
Cash and cash equivalents								$	44,290								$	36,495
Short-term investments available-for-sale								32,326									38,863
								$	76,616								$	75,358

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 instrument measured at fair value on a recurring basis (in thousands):

	June 30, 2015								March 31, 2015
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Cash	$	35,209	$	—	$	—	$	35,209	$	33,936	$	—	$	—	$	33,936
Cash equivalents	9,081		—		—		9,081		2,559		—		—		2,559
U.S. Treasury securities and agency bonds	985		—		—		985		1,230		—		—		1,230
Corporate bonds	—		10,922		—		10,922		—		10,794		—		10,794
Mortgage-backed securities	—		6		—		6		—		15		—		15
Municipal bonds	267		—		—		267		—		—		—		—
Mutual funds	20,130		—		—		20,130		26,791		—		—		26,791
Preferred stock	—		16		—		16		—		33		—		33
	$	65,672	$	10,944	$	—	$	76,616	$	64,516	$	10,842	$	—	$	75,358

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 securities, by contractual maturity (in thousands):

	June 30, 2015
	Cost		Estimated Fair Value
Less than 1 year	$	3,546	$	3,552
Mature in 1 – 2 years	7,518		7,519
Mature in 3 – 5 years	839		836
Mature after 5 years	—		6
	$	11,903	$	11,913

Schedule of Gross unrealized losses

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

As of June 30, 2015	Less Than 12 Months of Unrealized Losses					12 Months or More of Unrealized Losses					Total
	Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses
Corporate bonds	$	3,502	$	(13	)	$	—	$	—		$	3,502	$	(13	)
Mutual funds	2,186		(58		)	421		(52		)	2,607		(110		)
	$	5,688	$	(71	)	$	421	$	(52	)	$	6,109	$	(123	)

As of March 31, 2015	Less Than 12 Months of Unrealized Losses					12 Months or More of Unrealized Losses					Total
	Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses			Estimated Fair Value		Gross Unrealized Losses
Corporate bonds	$	878	$	(6	)	$	—	$	—		$	878	$	(6	)
Mutual funds	14,592		(17		)	475		(42		)	15,067		(59		)
	$	15,470	$	(23	)	$	475	$	(42	)	$	15,945	$	(65	)

Schedule of Warranty reserve activity

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

	Three months ended June 30,
	2015			2014
Beginning balance	$	194		$	199
Additions during the period	57			—
Settlements and expirations	(28		)	(15		)
Change in estimates	(1		)	(7		)
Ending balance	$	222		$	177

Schedule of Interest income, net

Net realized gain (loss) on short-term investments and interest income, net (in thousands):

	Three months ended June 30,
	2015		2014
Net realized gain (loss) on short-term investments	$	1,430	$	(5	)
Interest income, net	189		341
	$	1,619	$	336

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):

	Three months ended June 30,
	2015			2014
Net loss	$	(7,404	)	$	(13,065	)
Shares used in net loss per share computation:
Weighted average common shares outstanding, basic	81,179			77,916
Net effect of dilutive common share equivalents	—			—
Weighted average common shares outstanding, diluted	81,179			77,916
Basic and diluted net loss per share	$	(0.09	)	$	(0.17	)