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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Summary of Significant Accounting Policies [Abstract] |  |
Clinical Services Reimbursement | $ 0.5 nbs_ClinicalServicesReimbursement | $ 0.7 nbs_ClinicalServicesReimbursement

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- Definition Clinical Services Reimbursement + References No definition available. + Details
Name: | nbs_ClinicalServicesReimbursement
Namespace Prefix: | nbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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