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Consolidated Statements of Equity - USD ($)
Total
Total NeoStem, Inc. Shareholders' Equity [Member]
Preferred Stock [Member]
Series B Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Treasury Stock [Member]
Noncontrolling Interest [Member]
Beginning Balance (shares) at Dec. 31, 2013     10,000 27,196,537          
Beginning Balance at Dec. 31, 2013 $ 62,026,435 $ 62,542,475 $ 100 $ 27,197 $ 299,594,525 $ 0 $ (236,373,605) $ (705,742) $ (516,040)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net loss (26,599,576) (26,287,074)         (26,287,074)   (312,502)
Unrealized gain on marketable securities 998 998              
Share-based compensation (in shares)       456,709          
Share-based compensation 5,653,451 5,653,451   $ 457 5,652,994        
Stock Issued During Period, Shares, New Issues       1,650,081          
Net proceeds from issuance of common stock 10,149,438 10,149,438   $ 1,650 10,147,788        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period       41,136          
Proceeds from exercise of options 230,183 230,183   $ 41 230,142        
Proceeds from warrant exercise (in shares)       265,250          
Stock Issued During Period, Value, Warrant Exercises 1,373,925 1,373,925   $ 264 1,373,661        
Shares issued in CSC acquisition (shares)       5,329,510          
Shares issued in CSC acquisition, amount 24,462,451 24,462,451   $ 5,330 24,457,121        
Change in Ownership in Subsidiary 0 (86,618)     (86,618)       86,618
Ending Balance at Jun. 30, 2014 77,297,305 78,039,229 $ 100 $ 34,939 341,369,613 998 (262,660,679) (705,742) (741,924)
Ending Balance (shares) at Jun. 30, 2014     10,000 34,939,223          
Beginning Balance (shares) at Dec. 31, 2014     10,000 36,783,857          
Beginning Balance at Dec. 31, 2014 58,073,789 58,514,836 $ 100 $ 36,784 350,428,903 1,329 (291,246,538) (705,742) (441,047)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net loss (36,389,505) (36,313,156)         (36,313,156)   (76,349)
Unrealized gain on marketable securities 537 537       537      
Share-based compensation (in shares)       903,337          
Share-based compensation 8,132,106 8,132,106   $ 903 8,131,203        
Stock Issued During Period, Shares, New Issues       17,765,820          
Net proceeds from issuance of common stock 36,136,414 36,136,414   $ 17,766 36,118,648        
Proceeds from exercise of options 0                
Change in Ownership in Subsidiary 0 (88,928)     (88,928)       88,928
Ending Balance at Jun. 30, 2015 $ 65,953,341 $ 66,381,809 $ 100 $ 55,453 $ 394,589,826 $ 1,866 $ (327,559,694) $ (705,742) $ (428,468)
Ending Balance (shares) at Jun. 30, 2015     10,000 55,453,014