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Capital Availability (Details) (USD $)
0 Months Ended 3 Months Ended 0 Months Ended
May 05, 2015
Mar. 31, 2015
Mar. 31, 2014
May 08, 2015
Dec. 31, 2014
Oct. 31, 2014
Subsequent Event [Line Items]            
Net loss   $ (21,958,000)us-gaap_NetIncomeLoss $ (10,400,000)us-gaap_NetIncomeLoss      
Accumulated deficit   (360,231,000)us-gaap_RetainedEarningsAccumulatedDeficit     (338,273,000)us-gaap_RetainedEarningsAccumulatedDeficit  
Net cash used in operating activities   (5,030,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (8,962,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations      
Common stock issued, value 25,000,000us-gaap_StockIssuedDuringPeriodValueNewIssues          
Institutional Investors [Member]            
Subsequent Event [Line Items]            
Each unit consist of number of common stock and warrant (in shares)           1cytx_SubscriptionAgreementsNumberOfCommonStockAvailableInEachUnit
/ dei_LegalEntityAxis
= cytx_InstitutionalInvestorsMember
Subsequent Event [Member]            
Subsequent Event [Line Items]            
Common stock issued, value       19,400,000us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Each unit consist of number of common stock and warrant (in shares) 1cytx_SubscriptionAgreementsNumberOfCommonStockAvailableInEachUnit
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Subsequent Event [Member] | Institutional Investors [Member]            
Subsequent Event [Line Items]            
Common stock issued, value $ 25,000,000us-gaap_StockIssuedDuringPeriodValueNewIssues
/ dei_LegalEntityAxis
= cytx_InstitutionalInvestorsMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Each unit consist of number of common stock and warrant (in shares) 1cytx_SubscriptionAgreementsNumberOfCommonStockAvailableInEachUnit
/ dei_LegalEntityAxis
= cytx_InstitutionalInvestorsMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember