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Consolidated Balance Sheets (Parentheticals) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Preferred Stock, Shares Outstanding 10,000us-gaap_PreferredStockSharesOutstanding 10,000us-gaap_PreferredStockSharesOutstanding
Common Stock, Par Value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Accounts receivable trade, net of allowance for doubtful accounts $ 383,490us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 385,362us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Preferred Stock, authorized 20,000,000us-gaap_PreferredStockSharesAuthorized 20,000,000us-gaap_PreferredStockSharesAuthorized
Common Stock, Shares, Outstanding 39,423,911us-gaap_CommonStockSharesOutstanding 36,783,857us-gaap_CommonStockSharesOutstanding
Common Stock, Shares Authorized 500,000,000us-gaap_CommonStockSharesAuthorized 500,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, Shares, Issued 39,423,911us-gaap_CommonStockSharesIssued 36,783,857us-gaap_CommonStockSharesIssued
Preferred stock, shares designated 825,000nbs_PreferredStockSharesDesignated 825,000nbs_PreferredStockSharesDesignated
Preferred stock, issued 10,000us-gaap_PreferredStockSharesIssued 10,000us-gaap_PreferredStockSharesIssued
Preferred stock, Series B convertible redeemable preferred stock liquidation value, share of common stock 0.01us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion 0.01us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
Preferred stock, par value $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare