Subsequent Events (Details Narrative)	3 Months Ended
Mar. 31, 2019 shares
Restricted Stock Units (RSUs) [Member] \| Employee [Member]
Number of shares vested and to be settled with issued shares	120,000

Number of shares vested and to be settled with issued shares.

No definition available.

Name:	SRNA_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndSettledWithIssuedInPeriod
Namespace Prefix:	SRNA_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration