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Shareholders' Equity Equity Issuances (Details) (USD $) | 3 Months Ended | 1 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Dec. 31, 2014 | May 08, 2014
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued | 39,423,911 us-gaap_CommonStockSharesIssued |  | 39,423,911 us-gaap_CommonStockSharesIssued | 36,783,857 us-gaap_CommonStockSharesIssued | 5,329,593 us-gaap_CommonStockSharesIssued
Net proceeds from issuance of common stock | $ 7,411,828 us-gaap_StockIssuedDuringPeriodValueNewIssues | $ 5,630,625 us-gaap_StockIssuedDuringPeriodValueNewIssues |  |  |
Aspire Capital Purchase Agreement [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Term of agreement in months |  |  | 24 months |  |
Discount Applied To Weighted Average Price |  | 5.00%nbs_DiscountAppliedToWeightedAveragePrice / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |
Purchase Commitment, Remaining Minimum Amount Committed | 11,700,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  | 11,700,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  |
Stock Issued During Period, Shares, Other | 5,687,942 us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |  |
Stock Issued During Period, Shares, New Issues | 2,200,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |  |
Net proceeds from issuance of common stock | 7,400,000 us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_SubsidiarySaleOfStockAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |  |
Aspire Capital Purchase Agreement [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  | 150,000 us-gaap_CommonStockSharesIssued / dei_LegalEntityAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |
Purchase Commitment, Remaining Minimum Amount Committed |  | $ 30,000,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted / dei_LegalEntityAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  | 1,400,000 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / dei_LegalEntityAxis = nbs_AspireCapitalPurchaseAgreementMember |  |  |

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