XML 29 R47.htm IDEA: XBRL DOCUMENT v2.4.1.9
LONG-TERM CONVERTIBLE NOTES PAYABLE TO RELATED PARTIES (Details) (USD $)
0 Months Ended
Jan. 08, 2015
Aug. 06, 2014
Apr. 30, 2014
Apr. 25, 2014
Feb. 11, 2014
May 12, 2014
Jul. 15, 2014
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]                  
Convertible senior secured note               $ 990,000us-gaap_NotesPayableRelatedPartiesNoncurrent $ 0us-gaap_NotesPayableRelatedPartiesNoncurrent
Interest rate on debt (in hundredths)               8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage  
Convertible notes payable to related parties outstanding amount               990,000us-gaap_NotesPayableRelatedPartiesNoncurrent 0us-gaap_NotesPayableRelatedPartiesNoncurrent
Accrued and unpaid interest               86,323us-gaap_InterestPayableCurrentAndNoncurrent  
Morris Garfinkle [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Exchange price for convertible notes 40,335ztho_ExchangePriceForConvertibleNotes
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Mark Hershorn [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Exchange price for convertible notes 20,844ztho_ExchangePriceForConvertibleNotes
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MarkHershornMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Brian Israel [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Exchange price for convertible notes 20,844ztho_ExchangePriceForConvertibleNotes
/ us-gaap_LineOfCreditFacilityAxis
= ztho_BrianIsraelMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | Edward Smith, Director and Shareholder [Member]                  
Debt Instrument [Line Items]                  
Convertible senior secured note   264,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
19,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
300,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
200,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
       
Term of debt   2 years 2 years 2 years 2 years        
Maturity date   Aug. 06, 2016 Apr. 30, 2016 Apr. 25, 2016 Feb. 11, 2016        
Interest rate on debt (in hundredths)   14.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
14.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
14.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
12.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
       
Period considered to calculate interest rate   365 days 365 days 365 days 365 days        
Conversion of shares (in dollars per share)   $ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
$ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
$ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
         
Period after which conversion option become effective   90 days 90 days 90 days 90 days        
Proceeds from debt   200,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
             
Convertible notes payable to related parties outstanding amount   264,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
19,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
300,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
200,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
       
Convertible Notes [Member] | Edward Smith, Director and Shareholder [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Initial warrants received (in shares) 609,566ztho_InitialWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Additional warrants received ( in shares) 259,208ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible, warrants held by directors (in shares) 71,211ztho_ConvertibleWarrantsHeldByDirectorsInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Exchange price for convertible notes 284,844ztho_ExchangePriceForConvertibleNotes
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | Morris Garfinkle [Member]                  
Debt Instrument [Line Items]                  
Convertible senior secured note           75,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Term of debt           2 years      
Maturity date           May 12, 2016      
Interest rate on debt (in hundredths)           14.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Period considered to calculate interest rate           365 days      
Conversion of shares (in dollars per share)           $ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Period after which conversion option become effective           90 days      
Convertible notes payable to related parties outstanding amount           75,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Convertible Notes [Member] | Morris Garfinkle [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Initial warrants received (in shares) 86,317ztho_InitialWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Additional warrants received ( in shares) 36,705ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible, warrants held by directors (in shares) 10,084ztho_ConvertibleWarrantsHeldByDirectorsInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MorrisGarfinkleMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | CKS Warehouse [Member]                  
Debt Instrument [Line Items]                  
Convertible senior secured note           75,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Term of debt           2 years      
Maturity date           May 12, 2016      
Interest rate on debt (in hundredths)           14.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Period considered to calculate interest rate           365 days      
Conversion of shares (in dollars per share)           $ 1.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Period after which conversion option become effective           90 days      
Convertible notes payable to related parties outstanding amount           75,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
     
Convertible Notes [Member] | CKS Warehouse [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Initial warrants received (in shares) 41,712ztho_InitialWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Additional warrants received ( in shares) 17,737ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible, warrants held by directors (in shares) 4,873ztho_ConvertibleWarrantsHeldByDirectorsInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Exchange price for convertible notes 19,491ztho_ExchangePriceForConvertibleNotes
/ us-gaap_LineOfCreditFacilityAxis
= ztho_CksWarehouseMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | Mark Hershorn [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Initial warrants received (in shares) 44,606ztho_InitialWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MarkHershornMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Additional warrants received ( in shares) 18,968ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MarkHershornMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible, warrants held by directors (in shares) 5,211ztho_ConvertibleWarrantsHeldByDirectorsInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_MarkHershornMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | Brian Israel [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Initial warrants received (in shares) 44,606ztho_InitialWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_BrianIsraelMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Additional warrants received ( in shares) 18,968ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_BrianIsraelMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible, warrants held by directors (in shares) 5,211ztho_ConvertibleWarrantsHeldByDirectorsInShares
/ us-gaap_LineOfCreditFacilityAxis
= ztho_BrianIsraelMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Convertible Notes [Member] | Minimum [Member] | Edward Smith, Director and Shareholder [Member]                  
Debt Instrument [Line Items]                  
Conversion of shares (in dollars per share)         $ 1.25us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
       
Convertible Notes [Member] | Maximum [Member] | Edward Smith, Director and Shareholder [Member]                  
Debt Instrument [Line Items]                  
Conversion of shares (in dollars per share)         $ 2.25us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
       
Convertible Notes [Member] | Private Placement [Member] | Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Conversion of shares (in dollars per share) $ 4.00us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
               
Shares received by director under private placement (in shares) 96,589ztho_SharesReceivedByDirectorUnderPrivatePlacement
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
               
Initial warrants received (in shares) 826,806ztho_InitialWarrantsReceivedInShares
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
               
Additional warrants received ( in shares) 351,586ztho_AdditionalWarrantsReceivedInShares
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
               
Unsecured Note [Member] | Edward Smith, Director and Shareholder [Member]                  
Debt Instrument [Line Items]                  
Convertible senior secured note             64,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember
   
Term of debt             90 days    
Maturity date             Oct. 15, 2014    
Convertible notes payable to related parties outstanding amount             $ 64,000us-gaap_NotesPayableRelatedPartiesNoncurrent
/ us-gaap_LineOfCreditFacilityAxis
= ztho_DirectorAndShareholderMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember