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Shareholders' Equity Components of share-based compensation expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 10, 2012	Oct. 14, 2011	Jan. 18, 2011	Jun. 02, 2010	Oct. 29, 2009	May 09, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	(3,543,456)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Share-based Compensation Expense	$ 11,209,500us-gaap_AllocatedShareBasedCompensationExpense	$ 6,838,700us-gaap_AllocatedShareBasedCompensationExpense	$ 6,712,500us-gaap_AllocatedShareBasedCompensationExpense
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	494,200us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember	314,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember	195,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	2,058,200us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember	822,200us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember	432,900us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	$ 8,657,100us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember	$ 5,702,500us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember	$ 6,084,600us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember
Stock Options [Member] | 2009 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	8,995,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	5,995,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember		450,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	2,375,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	1,775,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	1,375,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	975,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember	380,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Stock Options [Member] | Non US Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized				570,000us-gaap_CommonStockSharesAuthorized / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_NonUsEquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
2009 Equity Plan [Member] | US Equity Plan [Member] | Stock Options [Member] | 2009 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	(80,856)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	(946,711)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Shares Expired	0nbs_SharesExpired / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Common Stock, Shares Authorized	8,995,000us-gaap_CommonStockSharesAuthorized / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	(4,304,881)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Common Stock, Shares, Outstanding	(3,662,552)us-gaap_CommonStockSharesOutstanding / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2009EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2009EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
2003 Equity Plan [Member] | US Equity Plan [Member] | Stock Options [Member] | 2003 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	(9,250)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	(88,993)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Shares Expired	(29,362)nbs_SharesExpired / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Common Stock, Shares Authorized	250,000us-gaap_CommonStockSharesAuthorized / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	(122,395)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember
Common Stock, Shares, Outstanding	0us-gaap_CommonStockSharesOutstanding / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = nbs_UsEquityPlanMember / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = nbs_A2003EquityPlanMember / us-gaap_StatementEquityComponentsAxis = nbs_A2003EquityPlanMember / nbs_StockOptionsActivityAxis = us-gaap_EmployeeStockOptionMember

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Shares Expired

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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