Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues	$ 21,250us-gaap_SalesRevenueNet	$ 20,563us-gaap_SalesRevenueNet	$ 45,401us-gaap_SalesRevenueNet	$ 67,830us-gaap_SalesRevenueNet
Cost and operating expenses:
Cost of revenues	18,094us-gaap_CostOfRevenue	15,863us-gaap_CostOfRevenue	43,953us-gaap_CostOfRevenue	56,461us-gaap_CostOfRevenue
Research and development	2,795us-gaap_ResearchAndDevelopmentExpense	2,951us-gaap_ResearchAndDevelopmentExpense	8,993us-gaap_ResearchAndDevelopmentExpense	9,061us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	7,550	8,232	23,534	27,741
Arbitration award expense			10,188us-gaap_LegalFees
Restructuring and impairments	507	108	5,416	872
Amortization of acquisition related intangibles	39	84	118	247
Total cost and operating expenses	28,985us-gaap_CostsAndExpenses	27,238us-gaap_CostsAndExpenses	92,202us-gaap_CostsAndExpenses	94,382us-gaap_CostsAndExpenses
Operating loss	(7,735)us-gaap_OperatingIncomeLoss	(6,675)us-gaap_OperatingIncomeLoss	(46,801)us-gaap_OperatingIncomeLoss	(26,552)us-gaap_OperatingIncomeLoss
Change in fair value of derivatives and warrants	2,288	535	3,048	1,890
Interest expense, net	(525)	(1,634)	(1,555)	(7,250)
Other (expense) income, net	(209)us-gaap_OtherNonoperatingIncomeExpense	(341)us-gaap_OtherNonoperatingIncomeExpense	379us-gaap_OtherNonoperatingIncomeExpense	(908)us-gaap_OtherNonoperatingIncomeExpense
Loss before income tax expense	(6,181)	(8,115)	(44,929)	(32,820)
Income tax expense	172us-gaap_IncomeTaxExpenseBenefit	302us-gaap_IncomeTaxExpenseBenefit	363us-gaap_IncomeTaxExpenseBenefit	733us-gaap_IncomeTaxExpenseBenefit
Net loss	$ (6,353)us-gaap_NetIncomeLoss	$ (8,417)us-gaap_NetIncomeLoss	$ (45,292)us-gaap_NetIncomeLoss	$ (33,553)us-gaap_NetIncomeLoss
Net loss per common share
Basic	$ (0.07)us-gaap_EarningsPerShareBasic	$ (0.14)us-gaap_EarningsPerShareBasic	$ (0.55)us-gaap_EarningsPerShareBasic	$ (0.55)us-gaap_EarningsPerShareBasic
Diluted	$ (0.07)us-gaap_EarningsPerShareDiluted	$ (0.14)us-gaap_EarningsPerShareDiluted	$ (0.55)us-gaap_EarningsPerShareDiluted	$ (0.55)us-gaap_EarningsPerShareDiluted
Weighted average number of common shares outstanding
Basic	87,645	62,309	82,284	60,578
Diluted	87,645	62,309	82,284	60,578

Gain (loss) in change of fair value of derivative instruments and warrants.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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