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This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Interest expense - note payable17false 3us-gaap_GainLossOnDerivativeInstrumentsNetPretaxus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse49152374915237falsefalsefalse2truefalsefalse740848740848falsefalsefalse3truefalsefalse497187497187falsefalsefalse4truefalsefalse-2887993-2887993falsefalsefalsexbrli:monetaryItemTypemonetaryAggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 false2Change in fair value - derivative18false 3ztho_ExpenseForModificationOfWarrantsPreviouslyIssuedForServicesztho_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse00falsefalsefalse2truefalsefalse00falsefalsefalse3truefalsefalse-4789801-4789801falsefalsefalse4truefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRefers to Expense for modification of warrants previously issued for services.No definition available.false2Expense for modification of warrants19false 3us-gaap_GainLossRelatedToLitigationSettlementus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalse2truefalsefalse00falsefalsefalse3truefalsefalse00falsefalsefalse4truefalsefalse-13967-13967falsefalsefalsexbrli:monetaryItemTypemonetaryThe net proceeds or assets obtained in excess of (less than) the net carrying amount of assets recorded, or assets distributed and liabilities assumed less than (in excess of) estimated litigation liability extinguished, in settlement of a litigation matter. 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