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STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES    
Net loss $ (7,702,574)us-gaap_NetIncomeLoss $ (1,438,069)us-gaap_NetIncomeLoss
Adjustments to reconcile loss from continuing operations to net cash used in operating activities:    
Stock based compensation - stock options and warrants vested 3,878,139us-gaap_ShareBasedCompensation 251,159us-gaap_ShareBasedCompensation
Common shares issued for director fees 150,000ztho_SharesIssuedForDirectorFees 160,001ztho_SharesIssuedForDirectorFees
Shares & warrants issued for services 104,000us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims 0us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
Preferred stock payable for services 149,787ztho_PreferredStockPayableForServices 0ztho_PreferredStockPayableForServices
Depreciation 61,714us-gaap_Depreciation 165,158us-gaap_Depreciation
Change in derivative liability, net of bifurcation 2,233,776us-gaap_UnrealizedGainLossOnDerivatives (48,188)us-gaap_UnrealizedGainLossOnDerivatives
Loss on debt conversion 351,314ztho_GainLossOnDebtConversion 0ztho_GainLossOnDebtConversion
Changes in operating assets and liabilities:    
Accounts receivable (43,948)us-gaap_IncreaseDecreaseInAccountsReceivable 173,220us-gaap_IncreaseDecreaseInAccountsReceivable
Inventory 147,298us-gaap_IncreaseDecreaseInInventories (99,015)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets 14,412us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets 19,983us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Note receivable 0ztho_IncreaseDecreaseInLetterOfCreditOperatingActivities (6,781)ztho_IncreaseDecreaseInLetterOfCreditOperatingActivities
Accounts payable and accrued expenses (212,068)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities 66,677us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
CASH USED IN OPERATING ACTIVITIES (868,150)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (755,855)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
CASH FLOWS FROM FINANCING ACTIVITES    
Proceeds for the purchase of convertible preferred stock 605,000us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock 0us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock
Borrowing on short term debt 0us-gaap_ProceedsFromShortTermDebt 500,000us-gaap_ProceedsFromShortTermDebt
Borrowing on long term convertible notes payable to related parties 0us-gaap_ProceedsFromIssuanceOfLongTermDebt 200,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
Principal payments on debt (588,211)us-gaap_RepaymentsOfDebt 0us-gaap_RepaymentsOfDebt
CASH PROVIDED BY FINANCING ACTIVITIES 16,789us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations 700,000us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
NET DECREASE IN CASH (851,361)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (55,855)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AT BEGINNING OF PERIOD 1,027,713us-gaap_CashAndCashEquivalentsAtCarryingValue 443,472us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AT THE PERIOD ENDED MARCH 31 176,352us-gaap_CashAndCashEquivalentsAtCarryingValue 387,617us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental Disclosures of Cash Flow Information:    
Cash paid during the period for interest 30,479us-gaap_InterestPaid 0us-gaap_InterestPaid
Dividends payable declared 48,617us-gaap_DividendsCommonStockCash 0us-gaap_DividendsCommonStockCash
Preferred stock issued for preferred stock payable 1,010,000us-gaap_StockIssued1 0us-gaap_StockIssued1
Conversion of debt and interest into preferred stock $ 386,375ztho_DebtConversionConvertedInstrumentDebtOrInterestIntoPreferredStock $ 0ztho_DebtConversionConvertedInstrumentDebtOrInterestIntoPreferredStock