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v2.4.1.9

Income Taxes (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Reconciliation of the total income tax provision tax rate [Abstract] |  |  |
Income tax expense (benefit) at federal statutory rate (in hundredths) | (34.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | (34.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | (34.00%)us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Income tax expense (benefit) at state statutory rate (in hundredths) | (3.52%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | (3.54%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | (2.79%)us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Gain on previously held equity interest in joint venture (in hundredths) | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness | (7.02%)us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfBusiness
Mark to market permanent adjustment (in hundredths) | (0.37%)cytx_EffectiveIncomeTaxRateReconciliationMarkToMarketPermanentAdjustment | (2.15%)cytx_EffectiveIncomeTaxRateReconciliationMarkToMarketPermanentAdjustment | (0.24%)cytx_EffectiveIncomeTaxRateReconciliationMarkToMarketPermanentAdjustment
Change in federal valuation allowance (in hundredths) | 27.12%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | 80.13%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance | 35.86%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Change in state rate (in hundredths) | 0.02%us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal | (1.01%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal | (8.36%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal
Permanent interest adjustments (in hundredths) | 4.17%cytx_PermanentInterestAdjustments | 0.00%cytx_PermanentInterestAdjustments | 0.00%cytx_PermanentInterestAdjustments
Debt refinance permanent adjustment (in hundredths) | 3.92%cytx_DebtRefinancePermanentAdjustment | 0.00%cytx_DebtRefinancePermanentAdjustment | 0.00%cytx_DebtRefinancePermanentAdjustment
Acquired NOL's/Intangibles from joint venture (in hundredths) | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfAssets | (33.40%)us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfAssets | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDispositionOfAssets
Foreign rate differential (in hundredths) | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | 2.48%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (0.04%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Other, net (in hundredths) | 2.66%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (1.49%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 9.57%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Total income tax provision (in hundredths) | 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 0.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Deferred tax assets [Abstract] |  |  |
Allowances and reserves | $ 825,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | $ 639,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals |
Accrued expenses | 502,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | 718,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |
Deferred revenue and gain-on-sale | 32,000 us-gaap_DeferredTaxAssetsDeferredIncome | 79,000 us-gaap_DeferredTaxAssetsDeferredIncome |
Stock based compensation | 7,786,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 6,962,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
Net operating loss carryforwards | 117,258,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 107,846,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
Income tax credit carryforwards | 6,993,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | 6,710,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards |
Property and equipment, principally due to differences in depreciation | 926,000 us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | 804,000 us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment |
Other,net | 77,000 us-gaap_DeferredTaxAssetsOther | 296,000 us-gaap_DeferredTaxAssetsOther |
Deferred tax assets (Total) | 134,399,000 us-gaap_DeferredTaxAssetsGross | 124,054,000 us-gaap_DeferredTaxAssetsGross |
Valuation allowance | (132,583,000)us-gaap_DeferredTaxAssetsValuationAllowance | (122,450,000)us-gaap_DeferredTaxAssetsValuationAllowance |
Total deferred tax assets, net of allowance | 1,816,000 us-gaap_DeferredTaxAssetsNet | 1,604,000 us-gaap_DeferredTaxAssetsNet |
Deferred tax liabilities [Abstract] |  |  |
Intangibles | (1,816,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets | (1,604,000)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets |
Total deferred tax liability | (1,816,000)us-gaap_DeferredIncomeTaxLiabilities | (1,604,000)us-gaap_DeferredIncomeTaxLiabilities |
Net deferred tax assets (liability) | 0 us-gaap_DeferredTaxLiabilities | 0 us-gaap_DeferredTaxLiabilities |
Schedule of reconciliation of unrecognized tax benefits activity [Roll Forward] |  |  |
Unrecognized Tax Benefits - Beginning | 1,723,000 us-gaap_UnrecognizedTaxBenefits | 1,394,000 us-gaap_UnrecognizedTaxBenefits | 1,304,000 us-gaap_UnrecognizedTaxBenefits
Gross increases - tax positions in prior period | 0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 69,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Gross decreases - tax positions in prior period | 0 us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | 0 us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | 0 us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Gross increase - current-period tax positions | 129,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 260,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 90,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Settlements | 0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities | 0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities | 0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities
Lapse of statute of limitations | 0 us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | 0 us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | 0 us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Unrecognized Tax Benefits - Ending | 1,852,000 us-gaap_UnrecognizedTaxBenefits | 1,723,000 us-gaap_UnrecognizedTaxBenefits | 1,394,000 us-gaap_UnrecognizedTaxBenefits
Income Tax Contingency [Line Items] |  |  |
Increased valuation allowance | 10,133,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |  |
Net operating loss carryforwards, Expire date | Begin to expire in 2019 and 2015 |  |
State tax credit carryforwards | 4,113,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal |  |
Cumulative change in ownership (in hundredths) | 50.00%cytx_CumulativeChangeInOwnership |  |
Period of net operating loss and R&D tax credit carry forwards to offset future taxable income | 3 years |  |
Excess tax benefits | 1,261,000 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits |  |
Period for material changes of liability for uncertain tax benefits | 12 months |  |
Federal [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax loss carryforwards | 314,349,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember |  |
Federal tax carry forward | 4,279,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember |  |
Federal tax credit carryforward, Expiration date | Begin to expire in 2018 |  |
California [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax loss carryforwards | 187,182,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = cytx_CaliforniaMember |  |
Stock Option [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Increased valuation allowance | $ 579,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_FinancialInstrumentAxis = us-gaap_StockOptionMember |  |

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