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Notes Payable, Long-Term Debt and Other Financing (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Notes payable, Gross $ 1,278,000us-gaap_NotesAndLoansPayable $ 1,278,000us-gaap_NotesAndLoansPayable
Less current portion of notes payable (40,000)ENVS_NotesPayableCurrent1 (40,000)ENVS_NotesPayableCurrent1
Notes payable, net of current portion 1,238,000us-gaap_NotesPayable 1,238,000us-gaap_NotesPayable
PrimePlusThreePercentNoteMember    
Debt Instrument [Line Items]    
Notes payable, Gross 1,238,000us-gaap_NotesAndLoansPayable
/ us-gaap_DebtInstrumentAxis
= ENVS_PrimePlusThreePercentNoteMember		 1,238,000us-gaap_NotesAndLoansPayable
/ us-gaap_DebtInstrumentAxis
= ENVS_PrimePlusThreePercentNoteMember
TenPercentNoteMember    
Debt Instrument [Line Items]    
Notes payable, Gross $ 40,000us-gaap_NotesAndLoansPayable
/ us-gaap_DebtInstrumentAxis
= ENVS_TenPercentNoteMember		 $ 40,000us-gaap_NotesAndLoansPayable
/ us-gaap_DebtInstrumentAxis
= ENVS_TenPercentNoteMember