Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
Cash	$ 88,152us-gaap_Cash	$ (126,073)us-gaap_Cash
Accounts receivable, net	164,832us-gaap_AccountsReceivableNet
Prepaid expenses	46,267us-gaap_PrepaidExpenseCurrent
Due on sale of Subsidiary	493,806GRST_DueOnSaleOfSubsidiary
Current assets - held for sale
Total current assets	793,057us-gaap_AssetsCurrent
Cash - Restricted	86,200
Fixed assets, net	256,543us-gaap_PropertyPlantAndEquipmentNet
Long term assets - held for resale
Total assets	1,135,800us-gaap_Assets
Bank overdraft
Accounts payable and accrued liabilities	808,971
Taxes payable	2,806,297us-gaap_AccruedIncomeTaxesCurrent
Deferred revenue	143,839us-gaap_DeferredRevenue
Convertible notes payable
Current portion of loan payable	7,625us-gaap_NotesAndLoansPayableCurrent
Short Term loan	29,758us-gaap_ShortTermBorrowings
Related party notes	51,336
Current liabilities - held for sale
Total current liabilities	3,847,826us-gaap_LiabilitiesCurrent
Loan payable	18,460us-gaap_LongTermLoansPayable
Total liabilities	3,866,286us-gaap_Liabilities
Common stock; $0.01 par value, 500,000,000 shares authorized; 46,134,787 and 41,065,564 shares issued and outstanding at December 31, 2014 and 2013 respectively	461,318us-gaap_CommonStockValue
Additional paid-in capital	16,129,038us-gaap_AdditionalPaidInCapital
Accumulated other comprehensive loss	245,187
Accumulated deficit	(19,566,029)us-gaap_CumulativeEarningsDeficit
Total stockholders' deficit	(2,730,486)us-gaap_StockholdersEquity	(3,070,336)us-gaap_StockholdersEquity
Total liabilities and stockholders' deficit	1,135,800
Scenario, Actual [Member]
Accounts receivable, net		194,503
Prepaid expenses		84,523
Due on sale of Subsidiary
Current assets - held for sale		284,294
Total current assets		563,320
Cash - Restricted		94,020
Fixed assets, net		283,246
Long term assets - held for resale		252,878
Total assets		1,193,464
Bank overdraft		126,073
Accounts payable and accrued liabilities		440,607
Taxes payable		2,371,919
Deferred revenue		107,477
Convertible notes payable		232,353
Current portion of loan payable		7,953
Short Term loan		44,443
Related party notes		205,995
Current liabilities - held for sale		698,528
Total current liabilities		4,235,348
Loan payable		28,452
Total liabilities		4,263,800
Common stock; $0.01 par value, 500,000,000 shares authorized; 46,134,787 and 41,065,564 shares issued and outstanding at December 31, 2014 and 2013 respectively		410,656
Additional paid-in capital		13,920,629
Accumulated other comprehensive loss		264,135
Accumulated deficit		(17,665,756)
Total stockholders' deficit		(3,070,336)
Total liabilities and stockholders' deficit		$ 1,193,464

No authoritative reference available.

No definition available.

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- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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No definition available.

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Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of assets classified as held for sale.

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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Carrying value as of the balance sheet date of payments made in excess of existing cash balances, which will be honored by the bank but reflected as a loan to the entity. Overdrafts generally have a very short time frame for correction or repayment and are therefore more similar to short-term bank financing than trade financing.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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Amount of cumulative earnings (deficits) for relevant time periods.

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No definition available.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.

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Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Sum of the carrying values as of the balance sheet date of the portions of all long-term notes and loans payable due within one year or the operating cycle if longer.

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The amount for notes payable (written promise to pay), due to related parties. 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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Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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