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Summary of Significant Accounting Policies (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Oct. 31, 2010
Cash and Cash Equivalents [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents investments with original maturities | $ 8,144,000 us-gaap_ShortTermInvestments |  |  |  | $ 4,644,000 us-gaap_ShortTermInvestments |  |  |  | $ 8,144,000 us-gaap_ShortTermInvestments | $ 4,644,000 us-gaap_ShortTermInvestments |  |  |
Goodwill and Intangibles [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Other intangibles, net, Beginning balance |  |  |  | 9,345,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |  | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill | 9,345,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |
Other intangibles, Acquisition of JV Intangible |  |  |  |  |  |  |  |  | 255,000 us-gaap_FinitelivedIntangibleAssetsAcquired1 | 9,394,000 us-gaap_FinitelivedIntangibleAssetsAcquired1 |  |  |
Other intangibles, net, Amortization |  |  |  |  |  |  |  |  | (185,000)us-gaap_AmortizationOfIntangibleAssets | (49,000)us-gaap_AmortizationOfIntangibleAssets |  |  |
Other intangibles, net, Ending balance | 9,415,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |  | 9,345,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |  | 9,415,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 9,345,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |
Goodwill, net, Beginning balance |  |  |  | 3,922,000 us-gaap_Goodwill |  |  |  | 3,922,000 us-gaap_Goodwill | 3,922,000 us-gaap_Goodwill | 3,922,000 us-gaap_Goodwill |  |  |
Goodwill, net, Increase (Decrease) |  |  |  |  |  |  |  |  | 0 us-gaap_GoodwillPeriodIncreaseDecrease | 0 us-gaap_GoodwillPeriodIncreaseDecrease |  |  |
Goodwill, net Ending balance | 3,922,000 us-gaap_Goodwill |  |  |  | 3,922,000 us-gaap_Goodwill |  |  |  | 3,922,000 us-gaap_Goodwill | 3,922,000 us-gaap_Goodwill | 3,922,000 us-gaap_Goodwill |  |
Total goodwill and other intangibles, net | 13,337,000 us-gaap_IntangibleAssetsNetIncludingGoodwill |  |  |  | 13,267,000 us-gaap_IntangibleAssetsNetIncludingGoodwill |  |  |  | 13,337,000 us-gaap_IntangibleAssetsNetIncludingGoodwill | 13,267,000 us-gaap_IntangibleAssetsNetIncludingGoodwill |  |  |
Useful life (in years) |  |  |  |  |  |  |  |  | 7 years |  | 10 years |  |
Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 896,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseNextTwelveMonths |  |  |  |  |  |  |  | 896,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseNextTwelveMonths |  |  |  |
2016 | 1,267,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearTwo |  |  |  |  |  |  |  | 1,267,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearTwo |  |  |  |
2017 | 1,774,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearThree |  |  |  |  |  |  |  | 1,774,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearThree |  |  |  |
2018 | 2,306,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearFour |  |  |  |  |  |  |  | 2,306,000 us-gaap_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseYearFour |  |  |  |
Thereafter | 2,883,000 cytx_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseAfterYearFive |  |  |  |  |  |  |  | 2,883,000 cytx_IntangibleAssetsArisingFromInsuranceContractsAcquiredInBusinessCombinationAmortizationExpenseAfterYearFive |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Change in fair value of warrants |  |  |  |  |  |  |  |  | (369,000)us-gaap_FairValueAdjustmentOfWarrants | (418,000)us-gaap_FairValueAdjustmentOfWarrants | (209,000)us-gaap_FairValueAdjustmentOfWarrants |  |
Exercise price per shares (in dollars per share) | $ 25.00 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |  |  |  |  |  |  |  | $ 25.00 us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 |  |  |  |
Expected term |  |  |  |  |  |  |  |  | 5 years 3 months 18 days |  |  |  |
Common stock market price (in dollars per share) | $ 0.49 us-gaap_SharePrice |  |  |  |  |  |  |  | $ 0.49 us-gaap_SharePrice |  |  |  | $ 4.50 us-gaap_SharePrice
Risk free interest rate (in hundredths) |  |  |  |  |  |  |  |  | 1.65%us-gaap_FairValueAssumptionsRiskFreeInterestRate |  |  |  |
Expected volatility (in hundredths) |  |  |  |  |  |  |  |  | 90.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate |  |  |  |
Resulting fair value (per warrant) (in dollars per share) | $ 0.38 cytx_WarrantFairValue |  |  |  |  |  |  |  | $ 0.38 cytx_WarrantFairValue |  |  |  |
Revenue Recognition [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Period of services provided subsequent to date of sale |  |  |  |  |  |  |  |  | 1 year |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 100.00%us-gaap_ConcentrationRiskPercentage1 | 100.00%us-gaap_ConcentrationRiskPercentage1 | 100.00%us-gaap_ConcentrationRiskPercentage1 |  |
Revenues | 2,469,000 us-gaap_Revenues | 518,000 us-gaap_Revenues | 935,000 us-gaap_Revenues | 1,031,000 us-gaap_Revenues | 2,706,000 us-gaap_Revenues | 1,616,000 us-gaap_Revenues | 1,408,000 us-gaap_Revenues | 1,392,000 us-gaap_Revenues | 4,953,000 us-gaap_Revenues | 7,122,000 us-gaap_Revenues | 8,709,000 us-gaap_Revenues |  |
Research and Development Arrangements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue, related party, revenue recognized |  |  |  |  |  |  |  | 638,000 us-gaap_DeferredRevenueRevenueRecognized |  | 0 us-gaap_DeferredRevenueRevenueRecognized | 2,882,000 us-gaap_DeferredRevenueRevenueRecognized |  |
Costs associated with the development device |  |  |  |  |  |  |  |  | 15,105,000 us-gaap_ResearchAndDevelopmentExpense | 17,065,000 us-gaap_ResearchAndDevelopmentExpense | 13,628,000 us-gaap_ResearchAndDevelopmentExpense |  |
Maximum total cost-plus fixed fee | 12,100,000 cytx_MaximumTotalCostPlusFixedFee |  |  |  |  |  |  |  | 12,100,000 cytx_MaximumTotalCostPlusFixedFee |  |  |  |
Equity method ownership interest in joint venture (in hundredths) | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage |  |  |  |  |  |  |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage |  |  |  |
Qualifying expenses entitlement under BARDA contract |  |  |  |  |  |  |  |  | 4,700,000 cytx_QualifyingExpensesEntitlementUnderBardaContract |  |  |  |
Qualifying expenditures related to research |  |  |  |  |  |  |  |  | 2,461,000 cytx_QualifyingExpendituresRelatedToResearchAndDevelopmentExpense | 3,053,000 cytx_QualifyingExpendituresRelatedToResearchAndDevelopmentExpense | 331,000 cytx_QualifyingExpendituresRelatedToResearchAndDevelopmentExpense |  |
Qualified expenses entitlement under BARDA contract |  |  |  |  |  |  |  |  | 14,100,000 cytx_QualifiedExpensesEntitlementUnderBARDAContract |  |  |  |
Qualified expenses related to research |  |  |  |  |  |  |  |  | 8,300,000 cytx_QualifiedExpensesRelatedToResearch |  |  |  |
Total expense and expenditure on Initial option |  |  |  |  |  |  |  |  | 22,400,000 cytx_TotalExpenseAndExpenditureOnInitialOption |  |  |  |
Loss Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) |  |  |  |  |  |  |  |  | 43.7 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 17.2 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 17.4 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |  |
Olympus and Olympus-Cytori [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Research and Development Arrangements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenues, related party | 28,311,000 cytx_DeferredRevenuesRelatedParty / us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis = us-gaap_LicenseAgreementTermsMember |  |  |  |  |  |  |  | 28,311,000 cytx_DeferredRevenuesRelatedParty / us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis = us-gaap_LicenseAgreementTermsMember |  |  |  |
BARDA Contract [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Research and Development Arrangements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Costs associated with the development device |  |  |  |  |  |  |  |  |  |  |  | 106,000,000 us-gaap_ResearchAndDevelopmentExpense / us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis = cytx_BardaContractMember |
Research and development arrangement with federal government, customer funding to offset costs incurred |  |  |  |  |  |  |  |  | 4,700,000 us-gaap_ResearchAndDevelopmentArrangementWithFederalGovernmentCustomerFundingToOffsetCostsIncurred / us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis = cytx_BardaContractMember |  |  |  |
Research and development arrangement, initial base period |  |  |  |  |  |  |  |  | 2 years |  |  |  |
North America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  |
Revenues |  |  |  |  |  |  |  |  | 894,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 1,079,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 1,143,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  |
Japan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 62.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_JP | 30.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_JP | 50.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_JP |  |
Revenues |  |  |  |  |  |  |  |  | 3,068,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_JP | 2,109,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_JP | 4,352,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_JP |  |
Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 17.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 23.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Revenues |  |  |  |  |  |  |  |  | 506,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 1,240,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 2,004,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |  |
Other countries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember | 38.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember | 14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember |  |
Revenues |  |  |  |  |  |  |  |  | 485,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember | 2,694,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember | 1,210,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cytx_OtherCountriesMember |  |
Customer Concentration Risk [Member] | Revenue Recognized [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of customers |  |  |  |  |  |  |  |  | 1 cytx_NumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  | 1 cytx_NumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |
Number of distributor |  |  |  |  |  |  |  |  | 3 cytx_NumberOfDistributor / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 1 cytx_NumberOfDistributor / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 52.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 26.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of customers |  |  |  |  |  |  |  |  |  | 1 cytx_NumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 2 cytx_NumberOfCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |
Number of distributor |  |  |  |  |  |  |  |  | 3 cytx_NumberOfDistributor / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 2 cytx_NumberOfDistributor / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 1 cytx_NumberOfDistributor / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |
Concentration risk percentage (in hundredths) |  |  |  |  |  |  |  |  | 92.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 55.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 39.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |  |
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |  | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Fair value of warrants allocated from additional paid in capital |  |  |  |  |  |  |  |  | 421,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityIssues / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 421,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityIssues / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Decrease in fair value recognized in operating expenses |  |  |  |  |  |  |  |  | (134,000)cytx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPeriodIncreaseDecreaseFairValueAdjustment / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | (134,000)cytx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPeriodIncreaseDecreaseFairValueAdjustment / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Ending balance | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |  | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |  | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 287,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_FairValueByLiabilityClassAxis = us-gaap_WarrantMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of warrants | 10,000,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |  | 10,000,000 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_WarrantMember |  |  |
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Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
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