Warrant And Derivative Liabilities, Noncurrent

No definition available.

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Namespace Prefix:	smsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
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

No definition available.

+ Details

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

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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

Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands			9 Months Ended
	Aug. 12, 2022	Aug. 11, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Class of Warrant or Right [Line Items]
Net cash proceeds from stock and warrants offering			$ 0	$ 15,000
Fair value of warrants at inception			$ 1,278		$ 3,317
Additional Warrants
Class of Warrant or Right [Line Items]
Number of shares issued (in shares)		1,132,075
Net cash proceeds from stock and warrants offering	$ 2,800
Additional Warrants
Class of Warrant or Right [Line Items]
Fair value of warrants at inception	$ 1,600
Additional Warrants \| Additional Warrants
Class of Warrant or Right [Line Items]
Purchase price (in dollars per share)		$ 2.65
Aggregate number of warrants (in shares)		1,132,075
Common stock market price		$ 2.65