3. BASIC INCOME (LOSS) PER SHARE (Details Narrative) - shares	3 Months Ended
May 31, 2017	May 31, 2016
Earnings Per Share [Abstract]
Warrants excluded from the denominator for diluted income (loss) per share	6,407,221	6,407,221

Warrants Excluded From Denominator For Diluted Income Loss Per Share

No definition available.

Name:	SYEV_WarrantsExcludedFromDenominatorForDilutedIncomeLossPerShare
Namespace Prefix:	SYEV_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration