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Transactions with Olympus Corporation (Details) (USD $)	1 Months Ended	12 Months Ended			0 Months Ended
	Oct. 31, 2010	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 08, 2014	May 27, 2013	May 08, 2013
Acquisition of Olympus' Interest in the Joint Venture [Abstract]
Remeasurement gain		$ 0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	$ 4,892,000us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	$ 0us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
Inputs used in valuation of acquired intangible assets [Abstract]
Useful life (in years)		7 years		10 years
Total payments to be made			5,000,000us-gaap_BusinessCombinationConsiderationTransferred1
Payments totaling		2,700,000us-gaap_PaymentsForPreviousAcquisition
Remaining payment obligation		3,300,000us-gaap_PaymentsForProceedsFromPreviousAcquisition
Initial investment by Olympus Corporation in Cytori [Abstract]
Common stock issued (in shares)	4,600,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
Difference between proceeds received and fair values of common stock and option liability		0cytx_IncreaseDecreaseDeferredRevenueRelatedParty	(638,000)cytx_IncreaseDecreaseDeferredRevenueRelatedParty	(2,882,000)cytx_IncreaseDecreaseDeferredRevenueRelatedParty
Formation of the Olympus-Cytori Joint Venture [Abstract]
Joint Venture Payment		2,262,000us-gaap_PaymentsToAcquireInterestInJointVenture	221,000us-gaap_PaymentsToAcquireInterestInJointVenture	0us-gaap_PaymentsToAcquireInterestInJointVenture
Percentage of share in Joint Venture (in hundredths)		50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
Put/Calls and Guarantees [Abstract]
Put option, repurchase floor				22,000,000,000cytx_PutOptionRepurchaseFloor
Option liability			0us-gaap_BeneficialInterest	2,250,000us-gaap_BeneficialInterest
Fair Value Inputs [Abstract]
Expected volatility (in hundredths)		90.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
Risk free interest rate (in hundredths)		1.65%us-gaap_FairValueAssumptionsRiskFreeInterestRate
Acquired Olympus Ownership [Member]
Acquisition of Olympus' Interest in the Joint Venture [Abstract]
Equity interest acquired (in hundredths)						50.00%cytx_BusinessAcquisitionPercentageOfEquityInterestsAcquired / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Acquisition agreement date						May 27, 2013
Remeasurement gain		4,892,000us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Installment payment amount description						Installment payments will be calculated quarterly based on 5% of Cytori's gross sales receipts for all products sold. If Cytori receives an aggregate $35,000,000 in cash through strategic or financing arrangements during the first year of the Termination Agreement, Cytori will pay $4,500,000 upon request of Olympus as full and complete consideration under the Agreement.
Gross sales receipts (in hundredths)						5.00%cytx_GrossSalesReceipts / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Limit for cash through strategic or financing arrangements						35,000,000cytx_LimitForCashThroughStrategicOrFinancingArrangements / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Required payment for acquisition						4,500,000cytx_RequiredPaymentForAcquisition / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Inputs used in valuation of acquired intangible assets [Abstract]
Estimated fair value							9,394,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Fair value of purchase consideration						4,928,000cytx_FairValueOfPurchaseConsideration / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Unamortized discount resulting from fair value calculation of purchase obligations						1,072,000cytx_UnamortizedDiscountResultingFromFairValueCalculationOfPurchaseObligations / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Weighted average expected term for amortization of purchase obligation						1 year 9 months 18 days
Year-to-date equity loss from investment in Joint Venture						48,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Increased obligation under alternative payment option					1,500,000cytx_IncreaseInSettlementObligation / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Total payments to be made					6,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Additional interest expense of quarterly reassessment		579,000,000cytx_AdditionalInterestExpense / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Unrecognized future discount amount		289,000,000cytx_RemainingUnrecognizedFutureDiscount / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Fair value of the assets acquired and liabilities assumed at the date of acquisition [Abstract]
Current assets							236,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Property and equipment							260,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Intangible assets							9,394,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Total assets acquired							9,890,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Accrued and other current liabilities							(33,000)cytx_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesAccruedAndOtherLiabilities / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Total fair value of the Joint Venture							9,857,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember
Acquired Olympus Ownership [Member] | Minimum [Member]
Acquisition of Olympus' Interest in the Joint Venture [Abstract]
Payment obligation under termination agreement						4,500,000cytx_PaymentObligationUnderTerminationAgreement / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Payment installment period						1 year
Inputs used in valuation of acquired intangible assets [Abstract]
Discount rate used to value intangible assets (in hundredths)						9.75%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Acquired Olympus Ownership [Member] | Maximum [Member]
Acquisition of Olympus' Interest in the Joint Venture [Abstract]
Payment obligation under termination agreement						16,000,000cytx_PaymentObligationUnderTerminationAgreement / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Payment installment period						6 years
Inputs used in valuation of acquired intangible assets [Abstract]
Discount rate used to value intangible assets (in hundredths)						12.75%us-gaap_FairValueInputsDiscountRate / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Acquired Olympus Ownership [Member] | Developed Technology [Member]
Inputs used in valuation of acquired intangible assets [Abstract]
Useful life (in years)		7 years
Estimated fair value		9,394,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Fair value of the assets acquired and liabilities assumed at the date of acquisition [Abstract]
Intangible assets		$ 9,394,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis = cytx_AcquiredOlympusOwnershipMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Cash outflow representing an adjustment to the purchase price of a previous acquisition.

+ References

No definition available.

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- Definition

The net cash inflow or outflow associated with the aggregate amount of adjustment to the purchase price of a previous acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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-Name Accounting Standards Codification

-Topic 230

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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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-Name Accounting Standards Codification

-Topic 505

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-Name Accounting Standards Codification

-Topic 505

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-Section S99

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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