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1. Restatement of Previously Issued Financial Statements (Details Narrative) (USD $)
 12 Months Ended
Dec. 31, 2013
BCF [Member]  
Cumulative Effect of Changes, Continuing Operations $ 1,627,789GRST_CumulativeEffectOfChangesContinuingOperations
/ us-gaap_StatementScenarioAxis
= GRST_BCFMember
Cumulative Effect of Changes, Discontinued 511,073GRST_CumulativeEffectOfChangesDiscontinued
/ us-gaap_StatementScenarioAxis
= GRST_BCFMember
Comensation [Member]  
Cumulative Effect of Changes, Continuing Operations 365,850GRST_CumulativeEffectOfChangesContinuingOperations
/ us-gaap_StatementScenarioAxis
= GRST_CompensationMember
Legal Fees [Member]  
Cumulative Effect of Changes, Continuing Operations 2,810,683GRST_CumulativeEffectOfChangesContinuingOperations
/ us-gaap_StatementScenarioAxis
= us-gaap_LegalReserveMember
Opening Deficit [Member]  
Cumulative Effect of Changes, Continuing Operations $ 2,219,238GRST_CumulativeEffectOfChangesContinuingOperations
/ us-gaap_StatementScenarioAxis
= GRST_OpeningDeficitMember