XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.21.2

Summary of Non-vested Non-qualified Stock Option Activity (Details) | 9 Months Ended
--- | ---
Sep. 30, 2021 USD ($) $ / shares shares
2017 Equity Incentive Plan [Member] | Employees And Consultants [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Options Nonvested, Beginning | shares |
Weighted Average Grant-Date Fair Value, Beginning | $ / shares |
Aggregated Intrinsic Value, Nonvested Beginning |
Grant Date Fair Value Nonvested, Beginning |
Number of Options Nonvested, Granted | shares | 3,035,800
Weighted Average Grant-Date Fair Value, Granted | $ / shares | $ 0.082
Grant Date Fair Value Nonvested, Granted |
Number of Options Nonvested, Vested | shares | (1,285,800)
Weighted Average Grant-Date Fair Value, Vested | $ / shares | $ 0.112
Aggregated Intrinsic Value, Vested | $ 66,412
Grant Date Fair Value Nonvested, Vested |
Number of Options Nonvested, Forfeited | shares |
Grant Date Fair Value Nonvested, Forfeited |
Number of Options Nonvested, Expired | shares |
Grant Date Fair Value Nonvested, Expired |
Number of Options Nonvested, Ending | shares | 1,750,000
Weighted Average Grant-Date Fair Value, Ending | $ / shares | $ 0.061
Aggregated Intrinsic Value, Nonvested Ending |
Grant Date Fair Value Nonvested, Ending | 104,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $ (66,412)
2017 Equity Plan and 2021 Equity Plan [Member] | Directors [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Options Nonvested, Beginning | shares | 1,000,000
Weighted Average Grant-Date Fair Value, Beginning | $ / shares | $ 0.029
Aggregated Intrinsic Value, Nonvested Beginning | $ 31,000
Grant Date Fair Value Nonvested, Beginning |
Number of Options Nonvested, Granted | shares | 230,770
Weighted Average Grant-Date Fair Value, Granted | $ / shares | $ 0.065
Grant Date Fair Value Nonvested, Granted |
Number of Options Nonvested, Vested | shares | (1,230,770)
Weighted Average Grant-Date Fair Value, Vested | $ / shares | $ 0.036
Aggregated Intrinsic Value, Vested | $ 1,154
Grant Date Fair Value Nonvested, Vested |
Number of Options Nonvested, Forfeited | shares |
Number of Options Nonvested, Expired | shares |
Number of Options Nonvested, Ending | shares |
Aggregated Intrinsic Value, Nonvested Ending |
Grant Date Fair Value Nonvested, Ending |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | (1,154)
Aggregated Intrinsic Value, Nonvested Forfeited | $ (29,846)

X
- References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedInPeriodFairValue1
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Forfeited. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantDateFairValueForfeited
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of options nonvested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonVestedInPeriodFairValue1
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvested
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Vested. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedGrantDateFairValueVested
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Granted. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedGrantDateFairValuesGranted
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Grant Date Fair Value, Expired + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfSharesGrantDateFairValueExpired
Namespace Prefix: | SRNA_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of Options, Expired. + References No definition available. + Details
Name: | SRNA_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsNumberOfOptionsExpired
Namespace Prefix: | SRNA_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of non-vested options forfeited. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=SRNA_TwoThousandAndSeventeenEquityPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=SRNA_EmployeesAndConsultantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=SRNA_TwoThousandAndSeventeenEquityPlanAndTwoThousandAndTwentyOneEquityPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=SRNA_DirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |