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v3.21.2

Subsequent Events (Details Narrative) - ft² | Jul. 28, 2021 | Jul. 27, 2021 | Apr. 30, 2021
--- | --- | --- | ---
Subsequent Event [Line Items] |  |  |
Area of land |  |  | 6,900
Subsequent Event [Member] | Lease Termination Agreement [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Area of land | 11,491 | 18,952 |
Lease expire date | Jan. 31, 2027 | Aug. 31, 2022 |

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- Definition Area of land held. + References No definition available. + Details
Name: | us-gaap_AreaOfLand
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

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- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=SRNA_LeaseTerminationAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |