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Shareholders' Equity Warrant Exercises (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Stock Options and Warrants [Line Items]
Proceeds from exercise of warrants	$ 2,126,291	$ 5,925,931
Underwriting Offering [Member]
Stock Options and Warrants [Line Items]
Class of Warrant or Right, fair value of warrant inducement	$ 0

X

- Definition

Class of Warrant or Right, fair value of warrant inducement

+ References

No definition available.

+ Details

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Namespace Prefix:	nbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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