BALANCE SHEET (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 176,352	$ 1,027,713
Accounts receivable	90,136us-gaap_AccountsReceivableNetCurrent	46,188us-gaap_AccountsReceivableNetCurrent
Inventory	561,731us-gaap_InventoryNet	709,029us-gaap_InventoryNet
Prepaid expenses and other assets	48,884	63,296
Total current assets	877,103us-gaap_AssetsCurrent	1,846,226us-gaap_AssetsCurrent
Long Term Assets
Other assets	15,393us-gaap_OtherAssetsNoncurrent	15,393us-gaap_OtherAssetsNoncurrent
Property and equipment, net	1,146,261us-gaap_PropertyPlantAndEquipmentNet	1,207,975us-gaap_PropertyPlantAndEquipmentNet
Total long term assets	1,161,654us-gaap_AssetsNoncurrent	1,223,368us-gaap_AssetsNoncurrent
TOTAL ASSETS	2,038,757us-gaap_Assets	3,069,594us-gaap_Assets
Current Liabilities
Accounts payable	813,875us-gaap_AccountsPayableCurrent	1,033,875us-gaap_AccountsPayableCurrent
Dividends payable	48,617us-gaap_DividendsPayableCurrent	0us-gaap_DividendsPayableCurrent
Short-term borrowings	0us-gaap_ShortTermBorrowings	588,211us-gaap_ShortTermBorrowings
Short-term nonconvertible notes payable to related party	270,000	270,000
Customer deposit	0us-gaap_CustomerDepositsCurrent	70,400us-gaap_CustomerDepositsCurrent
Accrued expenses and other	427,745us-gaap_AccruedLiabilitiesCurrent	367,331us-gaap_AccruedLiabilitiesCurrent
Accrued liquidated damages	36,178ztho_AccruedLiquidatedDamagesCurrent	36,178ztho_AccruedLiquidatedDamagesCurrent
Derivative liabilities	2,253,942us-gaap_DerivativeLiabilitiesCurrent	20,166us-gaap_DerivativeLiabilitiesCurrent
Total Current Liabilities	3,850,357us-gaap_LiabilitiesCurrent	2,386,161us-gaap_LiabilitiesCurrent
Long-term convertible notes payable to related parties	624,866	990,000
Total Liabilities	4,475,223us-gaap_Liabilities	3,376,161us-gaap_Liabilities
Stockholders' Equity (Deficit)
Common stock, $0.00005 par value; authorized 200,000,000 shares; issued and outstanding 40,711,778 and 39,734,854 shares, March 31, 2015 and December 31, 2014, respectively	2,036us-gaap_CommonStockValue	1,987us-gaap_CommonStockValue
Preferred stock payable	224,787	1,010,000
Additional paid-in capital	137,487,668	131,134,645
Accumulated deficit	(140,155,773)	(132,453,199)
Total Stockholders' Equity (Deficit)	(2,436,466)us-gaap_StockholdersEquity	(306,567)us-gaap_StockholdersEquity
TOTAL LIABILITIES & STOCKHOLDERS' EQUITY (DEFICIT)	2,038,757	3,069,594
Convertible Preferred Stock, Series B [Member]
Stockholders' Equity (Deficit)
Convertible preferred stock, Series B, $0.01 par value; authorized 3,000,000 shares; issued and outstanding 481,590 and 0 shares, March 31, 2015 and December 31, 2014, respectively	$ 4,816	$ 0

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant