Annual report pursuant to section 13 and 15(d)

Deferred Tax Assets and Liabilities (Detail)

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Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Deferred Tax Assets Liabilities [Line Items]    
Net Operating Loss Carryforward $ 26,864 $ 24,188
Amortization of Intangible Asset (1,134) (1,404)
Stock-based compensation 13,329 11,735
Credit Carryforwards    (248)
Other 867 54
Deferred Tax 39,927 34,325
Valuation Allowance (39,927) (34,325)
Net Deferred Tax Asset