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Debt (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 11, 2016
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Sep. 26, 2014
Debt Instrument [Line Items]                
Notes Payable   $ 1,300,000     $ 1,300,000   $ 1,800,000  
Debt Instrument, Maximum Payment To Lender Based On Receipt Of Proceeds From Eligible Events     $ 3,000,000          
Debt Issuance Cost     $ (100,000)          
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Three   400,000     400,000      
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Four   6,800,000     6,800,000      
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five   3,000,000     3,000,000      
Long-term Debt   10,200,000     10,200,000      
Interest expense   $ 200,000   $ 300,000 $ 500,000 $ 600,000    
Impaired Long-Lived Assets Held and Used, Asset Name [Domain]                
Debt Instrument [Line Items]                
Debt Instrument, Periodic Payment, Interest     8.00%          
Long-term Debt [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum     8.50%          
Aspire Capital Purchase Agreement [Member]                
Debt Instrument [Line Items]                
Long-term Debt, Gross               $ 15,000,000
NeoStem, Inc. [Member] | Long-term Debt [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Payment Terms     21 months          
Oxford Finance LLC [Member]                
Debt Instrument [Line Items]                
Repayments of Debt $ 7,000,000              
Debt Instrument, Payment To Lender Based On Receipt Of Proceeds From Eligible Events, Percent     20.00%          
Long-term Debt     $ 8,700,000       $ 15,000,000  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months     $ 5,000,000