Value of input used to measure derivative liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputSharePriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=smsi_AdditionalWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EmbeddedDerivativeFinancialInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt and Warrants Transactions - Assumptions (Details)	Sep. 30, 2023 $ / shares yr	Aug. 31, 2023 $ / shares yr	Jul. 31, 2023 yr $ / shares	Jun. 30, 2023 $ / shares yr	May 31, 2023 yr $ / shares	May 01, 2023 yr $ / shares	Mar. 31, 2023 yr $ / shares
Warrants \| Common stock market price
Line Of Credit Facility [Line Items]
Measurement input, warrants \| $ / shares	1.21
Warrants \| Risk-free interest rate
Line Of Credit Facility [Line Items]
Measurement input, warrants	0.0449
Warrants \| Expected dividend yield
Line Of Credit Facility [Line Items]
Measurement input, warrants	0
Warrants \| Expected term (in years)
Line Of Credit Facility [Line Items]
Measurement input, warrants \| yr	3.87
Warrants \| Expected volatility
Line Of Credit Facility [Line Items]
Measurement input, warrants	0.6605
Additional Warrants \| Common stock market price
Line Of Credit Facility [Line Items]
Measurement input, warrants \| $ / shares	1.21
Additional Warrants \| Risk-free interest rate
Line Of Credit Facility [Line Items]
Measurement input, warrants	0.0449
Additional Warrants \| Expected dividend yield
Line Of Credit Facility [Line Items]
Measurement input, warrants	0
Additional Warrants \| Expected term (in years)
Line Of Credit Facility [Line Items]
Measurement input, warrants \| yr	4.37
Additional Warrants \| Expected volatility
Line Of Credit Facility [Line Items]
Measurement input, warrants	0.6923
Embedded Derivative Financial Instruments \| Common stock market price
Line Of Credit Facility [Line Items]
Measurement input, derivatives \| $ / shares	1.21	1.71	1.14	1.11	1.21	1.22	1.16
Embedded Derivative Financial Instruments \| Risk-free interest rate
Line Of Credit Facility [Line Items]
Measurement input, derivatives	0.0556	0.0554	0.0553	0.0542	0.0491	0.0468	0.0468
Embedded Derivative Financial Instruments \| Expected dividend yield
Line Of Credit Facility [Line Items]
Measurement input, derivatives	0	0	0	0	0	0	0
Embedded Derivative Financial Instruments \| Expected term (in years)
Line Of Credit Facility [Line Items]
Measurement input, derivatives \| yr	0.25	0.33	0.42	0.50	0.59	0.67	0.75
Embedded Derivative Financial Instruments \| Expected volatility
Line Of Credit Facility [Line Items]
Measurement input, derivatives	0.7821	0.6985	0.5989	0.9068	0.8620	0.8157	0.8434