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The Business Principal of consolidation (Details) |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2014 | Mar. 31, 2011 | Sep. 30, 2014 NeoStem, Inc. [Member] UNITED STATES | Sep. 30, 2014 NeoStem Therapies, Inc [Member] UNITED STATES | Sep. 30, 2014 Stem Cell Technologies, Inc [Member] UNITED STATES | Sep. 30, 2014 Amorcyte, LLC [Member] UNITED STATES | Sep. 30, 2014 Progenitor Cell Therapy, LLC [Member] UNITED STATES | Sep. 30, 2014 NeoStem Family Storage, LLC [Member] UNITED STATES | Sep. 30, 2014 Athelos Corporation [Member] UNITED STATES | Sep. 30, 2014 PCT Allendale, LLC [Member] UNITED STATES | Sep. 30, 2014 NeoStem Oncology [Member] UNITED STATES
Schedule of Subisidiary [Line Items] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Ownership Interest by Parent | 90.00% | 80.10% |  | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% | 90.00% | 100.00% | 100.00%
Minority Interest Ownership Percentage By Parent [String] |  |  | Parent Company |  |  |  |  |  |  |  |

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | nbs_MinorityInterestOwnershipPercentageByParentString
Namespace Prefix: | nbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
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Namespace Prefix: | nbs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Subsidiary, Ownership Interest by Parent + References No definition available. + Details
Name: | nbs_SubsidiaryOwnershipInterestByParent
Namespace Prefix: | nbs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant