XML 49 R38.htm IDEA: XBRL DOCUMENT
v3.25.3

Note 6 - Fair Value of Financial Instruments - Changes in Derivative Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024
Measurement at December 31, 2024 | $ 121 | $ 101 | $ 224 | $ 369 | $ 411 | $ 597
Change in fair value | (34) | 20 | (123) | (220) | (42) | (186)
Measurement at March 31, 2025 | 87 | 121 | 101 | 149 | 369 | 411
Notes Warrants [Member] |  |  |  |  |  |
Measurement at December 31, 2024 | 107 | 90 | 197 | 338 | 362 | 334
Change in fair value | (29) | 17 | (107) | (203) | (24) | 28
Measurement at March 31, 2025 | 78 | 107 | 90 | 135 | 338 | 362
Additional Warrants [Member] |  |  |  |  |  |
Measurement at December 31, 2024 | 14 | 11 | 27 | 31 | 49 | 263
Change in fair value | (5) | 3 | (16) | (17) | (18) | (214)
Measurement at March 31, 2025 | $ 9 | $ 14 | $ 11 | $ 14 | $ 31 | $ 49

X
- Definition Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=smsi_NotesWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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