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Shareholders' Equity Warrants (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Class of Warrant or Right [Line Items] |  |
Weighted Average Exercise Price, Warrants Exercised | $ 5.38 |
Warrants Issued During Period, Value | $ 149,900 | $ 172,200
Warrant inducements | 40,407 | 41,969
Warrant holder A [Member] |  |
Class of Warrant or Right [Line Items] |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 600,000 |
Warrant Inducement Per Share | 0.30 |
Proceeds from Issuance of Warrants | $ 3,000,000 |
Minimum [Member] | Warrant holder A [Member] |  |
Class of Warrant or Right [Line Items] |  |
Weighted Average Exercise Price, Warrants Exercised | $ 5.10 |
Maximum [Member] | Warrant holder A [Member] |  |
Class of Warrant or Right [Line Items] |  |
Weighted Average Exercise Price, Warrants Exercised | $ 7.40 |

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- Definition Class of Warrant or Right, fair value of warrant inducement + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Stock Issued During Period, Shares, Warrant Inducements + References No definition available. + Details
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- Definition Warrants Issued During Period, Value + References No definition available. + Details
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Namespace Prefix: | nbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Weighted Average Exercise Price, Warrants Exercised + References No definition available. + Details
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Namespace Prefix: | nbs_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Definition The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 2 -Article 4 + Details
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Period Type: | instant

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- Definition The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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