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Consolidated Statements of Operations (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Revenues $ 73,717,980 $ 69,821,294
Cost of revenues 55,974,088 49,668,262
Gross profit 17,743,892 20,153,032
Research and development 11,003,110 7,684,537
Selling, general, and administrative 41,845,255 30,788,638
Goodwill impairment 19,432,667 558,168
Operating expenses 72,281,032 39,031,343
Operating loss (54,537,140) (18,878,311)
Other income (expense):    
Other income (expense), net 2,338,270 513,110
Interest expense (3,991,220) (480,903)
Nonoperating Income (Expense), Total (1,652,950) 32,207
Loss from operations before provision for income taxes and noncontrolling interests (56,190,090) (18,846,104)
Provision for income taxes 392,767 550,912
Net loss (56,582,857) (19,397,016)
Less - net (loss) income attributable to noncontrolling interests (9,448,388) 3,908,690
Net loss attributable to NeoStem, Inc. (47,134,469) (23,305,706)
Preferred dividends 639,765 237,963
Net loss attributable to NeoStem, Inc. common shareholders $ (47,774,234) $ (23,543,669)
Basic and diluted loss per share $ (0.54) $ (0.46)
Weighted average common shares outstanding 88,598,696 51,632,417