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Consolidated Statements of Cash Flows (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash Flows from Operating Activities:    
Net Loss $ (8,118,016)us-gaap_NetIncomeLoss $ (4,187,892)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:    
Loss (gain) on extinguishment of debt 176,496us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt
(Gain) loss on derivatives (1,167,000)us-gaap_GainLossOnDerivativeInstrumentsNetPretax 91,000us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Amortization of intangible assets 1,576us-gaap_AmortizationOfIntangibleAssets 1,551us-gaap_AmortizationOfIntangibleAssets
Amortization of debt discount 1,373,143us-gaap_AmortizationOfDebtDiscountPremium 444,450us-gaap_AmortizationOfDebtDiscountPremium
Stock issued for services 334,238us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims 202,270us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
Stock issued for compensation 1,479,972us-gaap_ShareBasedCompensation 505,509us-gaap_ShareBasedCompensation
Stock issued for interest expense and financing expenses 285,196us-gaap_PaidInKindInterest 406,508us-gaap_PaidInKindInterest
Warrant grants issued for compensation and services 0us-gaap_AdjustmentOfWarrantsGrantedForServices 206,700us-gaap_AdjustmentOfWarrantsGrantedForServices
Equity instruments issued with debt greater than debt carrying amount 185,000nrti_EquityInstrumentsIssuedWithDebtGreaterThanDebtCarryingAmount 0nrti_EquityInstrumentsIssuedWithDebtGreaterThanDebtCarryingAmount
Inventory reserve 0us-gaap_IncreaseDecreaseInOtherCurrentLiabilities (49,200)us-gaap_IncreaseDecreaseInOtherCurrentLiabilities
Change in assets and liabilities:    
Accounts receivable 129,690us-gaap_IncreaseDecreaseInAccountsReceivable (472,297)us-gaap_IncreaseDecreaseInAccountsReceivable
Receivable from the Technology Business Tax Certificate Transfer Program 2,981,499us-gaap_IncreaseDecreaseInLongTermReceivablesCurrent (1,147,429)us-gaap_IncreaseDecreaseInLongTermReceivablesCurrent
Deferred cost of goods sold 569,036nrti_IncreaseDecreaseInDeferredCostOfGoodsSold (569,036)nrti_IncreaseDecreaseInDeferredCostOfGoodsSold
Inventories (266,089)us-gaap_IncreaseDecreaseInInventories (366,810)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses (20,369)us-gaap_IncreaseDecreaseInPrepaidExpense 3,044us-gaap_IncreaseDecreaseInPrepaidExpense
Deposits 319,683us-gaap_IncreaseDecreaseInDeposits (418,892)us-gaap_IncreaseDecreaseInDeposits
Accounts payable and accrued expenses 372,375us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities 2,326,763us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Deferred revenue (1,269,470)us-gaap_IncreaseDecreaseInDeferredRevenue 1,269,470us-gaap_IncreaseDecreaseInDeferredRevenue
Customer prepayments 0us-gaap_IncreaseDecreaseInCustomerDeposits (39,970)us-gaap_IncreaseDecreaseInCustomerDeposits
Net cash used in operating activities (2,633,041)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (1,841,239)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash Flows from Investing Activities:    
Business acquisition 0us-gaap_PaymentsToAcquireBusinessesGross (100,000)us-gaap_PaymentsToAcquireBusinessesGross
Purchase of intangible assets 0us-gaap_PaymentsToAcquireIntangibleAssets (41,000)us-gaap_PaymentsToAcquireIntangibleAssets
Net cash used in investing activities 0us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (141,000)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash Flows from Financing Activities:    
Proceeds from debt 3,060,030us-gaap_ProceedsFromIssuanceOfDebt 3,331,688us-gaap_ProceedsFromIssuanceOfDebt
Repayment of debt (528,000)us-gaap_RepaymentsOfDebt (1,251,522)us-gaap_RepaymentsOfDebt
Net cash provided by financing activities 2,532,030us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations 2,080,166us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net (decrease) increase in cash (101,011)us-gaap_CashPeriodIncreaseDecrease 97,927us-gaap_CashPeriodIncreaseDecrease
Cash at beginning of year 106,773us-gaap_Cash 8,846us-gaap_Cash
Cash at end of year 5,762us-gaap_Cash 106,773us-gaap_Cash
Supplemental disclosure of cash and non-cash investing and financing transactions:    
Interest paid 215,855us-gaap_InterestPaid 86,169us-gaap_InterestPaid
Income taxes paid 1,500us-gaap_IncomeTaxesPaid 5,500us-gaap_IncomeTaxesPaid
Debt converted to Convertible Preferred Stock Series G shares 53,460us-gaap_DebtConversionConvertedInstrumentAmount1 55,188us-gaap_DebtConversionConvertedInstrumentAmount1
Convertible Preferred Stock Series G shares issued for financing $ 612,924us-gaap_StockIssued1 $ 153,740us-gaap_StockIssued1