Other Accrued Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Other accrued liabilities
Accrued inventory received	$ 10,000ENVS_AccruedInventoryReceived1	$ 10,000ENVS_AccruedInventoryReceived1
Accrued professional services	298,000us-gaap_AccruedProfessionalFeesCurrent	161,000us-gaap_AccruedProfessionalFeesCurrent
Accrued warranty	74,000	74,000
Other	49,000ENVS_OtherAccruedLiabilitiesCurrent1	49,000ENVS_OtherAccruedLiabilitiesCurrent1
Total	$ 431,000us-gaap_OtherAccruedLiabilitiesCurrent	$ 294,000us-gaap_OtherAccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. 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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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. 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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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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