Annual report pursuant to Section 13 and 15(d)

15. Income Taxes (Details-Deferred taxes)

v2.4.1.9
15. Income Taxes (Details-Deferred taxes) (USD $)
Mar. 31, 2015
Mar. 31, 2014
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