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15. Income Taxes (Details-Deferred taxes) (USD $)
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Mar. 31, 2015
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Mar. 31, 2014
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| Deferred tax assets: | ||
| Net operating loss carryforwards | $ 36,661,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 36,209,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Research and development tax credit carryforwards | 1,667,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch | 1,650,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch |
| Stock-based compensation | 4,880,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 3,941,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Reserves and accruals | 1,731,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | 2,537,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals |
| Other deferred tax assets | 49,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther | 13,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther |
| State income taxes | (1,000)us-gaap_DeferredTaxAssetsStateTaxes | (1,000)us-gaap_DeferredTaxAssetsStateTaxes |
| Basis difference in assets | 5,000us-gaap_DeferredTaxAssetsOther | 35,000us-gaap_DeferredTaxAssetsOther |
| Total deferred tax assets | 44,992,000us-gaap_DeferredTaxAssetsGross | 44,384,000us-gaap_DeferredTaxAssetsGross |
| Deferred tax liabilities: | ||
| Unrealized gain on Ruthigen | (1,105,000)us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome | (3,111,000)us-gaap_DeferredTaxLiabilitiesOtherComprehensiveIncome |
| Net deferred tax asset | 43,887,000us-gaap_DeferredTaxAssetsLiabilitiesNet | 41,273,000us-gaap_DeferredTaxAssetsLiabilitiesNet |
| Valuation allowance | (43,887,000)us-gaap_DeferredTaxAssetsValuationAllowance | (41,273,000)us-gaap_DeferredTaxAssetsValuationAllowance |
| Net deferred tax asset | $ 0us-gaap_DeferredTaxAssetsNet | $ 0us-gaap_DeferredTaxAssetsNet |
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, before jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other provisions, reserves, allowances, and accruals not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains in other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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