XML 73 R63.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Equity Transactions - Additional Information (Detail) |  |  |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 29, 2017 USD ($) $ / shares shares | May 17, 2017 USD ($) | May 16, 2017 Investor $ / shares shares | Sep. 02, 2016 $ / shares shares | Jun. 30, 2017 USD ($) $ / shares | Mar. 31, 2017 USD ($) $ / shares | Dec. 31, 2016 USD ($) $ / shares | Sep. 30, 2016 USD ($) $ / shares | Jun. 30, 2017 USD ($) $ / shares | Sep. 30, 2017 USD ($) Triggering_Event $ / shares shares | Sep. 30, 2016 USD ($) $ / shares | Dec. 31, 2016 USD ($) $ / shares | May 31, 2017 $ / shares
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, issued and sold to investors, purchase price | $ 5,500,000 |  |  |  |  |  |  |  |  | $ 2,413,000 |  |  |
Gross proceeds from issuance of preferred stock | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, principal amount | $ 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Warrants term |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Warrants exercisable beginning date |  |  |  |  |  |  |  |  |  | Nov. 18, 2017 |  |  |
Gross proceeds before deducting transaction fees and other expenses |  | $ 2,300,000 |  |  |  |  |  |  |  |  |  |  |
Offering cost related to the transaction |  | 200,000 |  |  |  |  |  |  |  |  |  |  |
Transaction fees |  | 100,000 |  |  |  |  |  |  |  |  |  |  |
Legal and other expenses |  | 100,000 |  |  |  |  |  |  |  |  |  |  |
Cash from issuance of common stock, net of offering costs |  | $ 2,100,000 |  |  |  |  |  |  |  | $ 2,056,000 |  |  |
Number of triggering events for issuance of warrants | Triggering_Event |  |  |  |  |  |  |  |  |  | 5 |  |  |
ASU 2017-11 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) the Loss before provision for income taxes and Net loss |  |  |  |  | $ (600,000) | $ 600,000 | $ 500,000 | $ 300,000 |  | $ 0 | $ 300,000 | $ 800,000 |
Increased (decreased) net loss |  |  |  |  | $ (600,000) | $ 600,000 | $ 500,000 | $ 300,000 |  | $ 0 | $ 300,000 | $ 800,000 |
Increase (decrease) the net loss per share | $ / shares |  |  |  |  | $ (0.05) | $ 0.05 | $ 0.04 | $ 0.03 | $ 0.00 | $ 0 | $ 0.02 | $ 0.07 |
Reduction of amortization of debt discounts |  |  |  |  |  |  |  |  | $ (100,000) |  |  | $ (100,000) |
ASU 2017-11 [Member] | Previously Reported [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of previously reported change in fair value of warrant liabilities |  |  |  |  |  | $ 700,000 |  |  | $ 100,000 |  | $ 300,000 | $ 900,000 |
Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Triggering event charges |  |  |  |  |  |  |  |  |  | $ 3,000,000 |  |  |
William W. and Dieva L. Smith [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted exercise price | $ / shares |  |  |  |  |  |  |  |  |  | $ 2.38 |  |  |
William W. and Dieva L. Smith [Member] | Note and Warrant Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock exercise price | $ / shares |  |  |  | $ 2.74 |  |  |  |  |  |  |  |  |
Purchase of warrants | shares |  |  |  | 850,000 |  |  |  |  |  |  |  |  |
Warrants expiration period |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Unterberg Koller Capital Fund L.P. and William W. and Dieva L. Smith [Member] | Note and Warrant Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock exercise price | $ / shares |  |  |  | $ 2.74 |  |  |  |  |  |  |  |  |
Purchase of warrants | shares |  |  |  | 1,700,000 |  |  |  |  |  |  |  |  |
Warrants expiration period |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Unterberg Koller Capital Fund L.P. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted exercise price | $ / shares |  |  |  |  |  |  |  |  |  | $ 2.14 |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, issued and sold to investors | shares |  |  |  |  |  |  |  |  |  | 3,000 |  |  |
Preferred stock, dividend rate | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, conversion price per share | $ / shares | $ 1.14 |  |  |  |  |  |  |  |  | $ 1.14 |  |  |
Convertible preferred stock, terms of conversion |  |  |  |  |  |  |  |  |  | In the event that the trading price of the Company’s Common Stock for 20 consecutive trading days (as determined in the Certificate of Designation) exceeds 400% of the then effective Conversion Price of the Series B Preferred Stock (initially set at $1.14), the Company may force conversion of the Series B Preferred Stock into shares of Common Stock or elect to redeem the Series B Preferred Stock for cash. |  |  |
Preferred stock threshold consecutive trading days | 20 days |  |  |  |  |  |  |  |  |  |  |  |
Trading price of common stock exceeds conversion price, percentage | 400.00% |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stock, right to increase in dividend percentage upon stock price trigger | 12.00% |  |  |  |  |  |  |  |  |  |  |  |
Triggering event charges |  |  |  |  |  |  |  |  |  | $ 41,000,000 |  |  |
Series B Preferred Stock [Member] | William W. and Dieva L. Smith [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares converted into common stock | shares | 2,750 |  |  |  |  |  |  |  |  |  |  |  |
Series B Preferred Stock [Member] | Andrew Arno [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares converted into common stock | shares | 50 |  |  |  |  |  |  |  |  |  |  |  |
Offering [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from issuance of preferred stock | $ 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from issuance of preferred stock | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Offering [Member] | William W. and Dieva L. Smith [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, principal amount | 2,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Offering [Member] | Andrew Arno [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, principal amount | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Offering [Member] | Series B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, issued and sold to investors | shares | 5,500 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, price per share | $ / shares | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, issued and sold to investors, purchase price | $ 5,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, conversion price per share | $ / shares | $ 1.14 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares converted into common stock | shares | 4,824,562 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend payment terms |  |  |  |  |  |  |  |  |  | The holders of Series B Preferred Stock are entitled to receive cumulative dividends out of funds legally available thereof at a rate of ten percent (10%) per annum, payable (i) when and as declared by the Board of Directors, in quarterly installments on March 1, June 1, September 1 and December 1, and (ii) upon conversion into Common Stock with respect the Series B Preferred Stock being converted. |  |  |
Registered Direct Offering [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, issued and sold to investors | shares |  |  | 2,077,000 |  |  |  |  |  |  |  |  |  |
Common stock, price per share | $ / shares |  |  | $ 1.05 |  |  |  |  |  |  |  |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, issued and sold to investors | shares |  |  | 85,000 |  |  |  |  |  |  |  |  |  |
Common stock, price per share | $ / shares |  |  | $ 1.10 |  |  |  |  |  |  |  |  |  |
Number of accredited investors | Investor |  |  | 4 |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Andrew Arno [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, issued and sold to investors | shares |  |  | 50,000 |  |  |  |  |  |  |  |  |  |
Common stock, price per share | $ / shares |  |  | $ 1.10 |  |  |  |  |  |  |  |  |  |
Sutter [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of warrants to purchase shares of common stock on number of shares sold |  |  |  |  |  |  |  |  |  | 5.00% |  |  |
Common stock exercise price | $ / shares |  |  |  |  |  |  |  |  |  | $ 1.21 |  |  |
Common stock offering price per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.10
Chardan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of warrants to purchase shares of common stock on number of shares sold |  |  |  |  |  |  |  |  |  | 5.00% |  |  |
Common stock exercise price | $ / shares |  |  |  |  |  |  |  |  |  | $ 1.155 |  |  |
Common stock offering price per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.05

X
- Definition Class of warrant or right adjusted exercise price of warrants or rights. + References No definition available. + Details
Name: | smsi_ClassOfWarrantOrRightAdjustedExercisePriceOfWarrantsOrRights
Namespace Prefix: | smsi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock issuance costs. + References No definition available. + Details
Name: | smsi_CommonStockIssuanceCosts
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Common stock offering price per share. + References No definition available. + Details
Name: | smsi_CommonStockOfferingPricePerShare
Namespace Prefix: | smsi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Stock Warrants Expiration Period + References No definition available. + Details
Name: | smsi_CommonStockWarrantsExpirationPeriod
Namespace Prefix: | smsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Convertible preferred stock conversion price per share. + References No definition available. + Details
Name: | smsi_ConvertiblePreferredStockConversionPricePerShare
Namespace Prefix: | smsi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Convertible preferred stock, right to increase in dividend percentage upon stock price trigger. + References No definition available. + Details
Name: | smsi_ConvertiblePreferredStockRightToIncreaseInDividendPercentageUponStockPriceTrigger
Namespace Prefix: | smsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Convertible preferred stock threshold consecutive trading days. + References No definition available. + Details
Name: | smsi_ConvertiblePreferredStockThresholdConsecutiveTradingDays
Namespace Prefix: | smsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Convertible preferred stock threshold percentage of stock price trigger. + References No definition available. + Details
Name: | smsi_ConvertiblePreferredStockThresholdPercentageOfStockPriceTrigger
Namespace Prefix: | smsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Legal fees and other expenses paid in connection with sale of common stock. Included in total offering costs. + References No definition available. + Details
Name: | smsi_LegalAndOtherExpenses
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition New accounting pronouncement or change in accounting principle effect of change on amortization of debt discounts. + References No definition available. + Details
Name: | smsi_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnAmortizationOfDebtDiscounts
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition New accounting pronouncement or change in accounting principle effect of change on loss before provision for income taxes. + References No definition available. + Details
Name: | smsi_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnLossBeforeProvisionForIncomeTaxes
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition New accounting pronouncement or change in accounting principle effect of change on net loss of basic and diluted earnings per share. + References No definition available. + Details
Name: | smsi_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetLossOfBasicAndDilutedEarningsPerShare
Namespace Prefix: | smsi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of accredited investors. + References No definition available. + Details
Name: | smsi_NumberOfAccreditedInvestors
Namespace Prefix: | smsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of triggering events for issuance of warrants. + References No definition available. + Details
Name: | smsi_NumberOfTriggeringEventsForIssuanceOfWarrants
Namespace Prefix: | smsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of warrants to purchase common stock shares on number of shares sold. + References No definition available. + Details
Name: | smsi_PercentageOfWarrantsToPurchaseCommonStockSharesOnNumberOfSharesSold
Namespace Prefix: | smsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Preferred stock shares issued price per share. + References No definition available. + Details
Name: | smsi_PreferredStockSharesIssuedPricePerShare
Namespace Prefix: | smsi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gross proceeds from issuance of common stock. + References No definition available. + Details
Name: | smsi_ProceedsFromIssuanceOfCommonStockGross
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from issuance of preferred stock and preference stock gross. + References No definition available. + Details
Name: | smsi_ProceedsFromIssuanceOfPreferredStockAndPreferenceStockGross
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Shares issued during preferred stock shares new issues. + References No definition available. + Details
Name: | smsi_SharesIssuedDuringPreferredStockSharesNewIssues
Namespace Prefix: | smsi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares issued during preferred stock value new issues. + References No definition available. + Details
Name: | smsi_SharesIssuedDuringPreferredStockValueNewIssues
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transaction fees on sale of common stock. + References No definition available. + Details
Name: | smsi_TransactionFeesOnSaleOfCommonStock
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Triggering event charges. + References No definition available. + Details
Name: | smsi_TriggeringEventCharges
Namespace Prefix: | smsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Warrants exercisable beginning date. + References No definition available. + Details
Name: | smsi_WarrantsExercisableBeginningDate
Namespace Prefix: | smsi_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Warrants term. + References No definition available. + Details
Name: | smsi_WarrantsTerm
Namespace Prefix: | smsi_
Data Type: | xbrli:durationItemType
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_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued for each share of convertible preferred stock that is converted. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644 + Details
Name: | us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Specific terms relevant to convertibility. Includes class of preferred stock and number of shares convertible into, exercise (or conversion) price or rates, dates relevant to conversion timing and events relevant to conversion. Describe also any beneficial conversion features. where convertible preferred stock with a nondetachable conversion feature is in-the-money at commitment date. For contingently convertible preferred stock, discuss the circumstances of the contingency, including the events or changes in circumstance that would cause the contingency to be met and any of the significant features necessary to understand the conversion rights and the timing of those rights. Include also an events or changes in circumstance, if any, that could adjust or change the contingency, conversion price, or number of shares, including significant terms of those changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ConvertiblePreferredStockTermsOfConversion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 25 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the effect of a change in accounting principle on net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794 + Details
Name: | us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Specific information regarding dividend payment dates or timing and whether or not dividends are paid on a cumulative basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockDividendPaymentTerms
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage rate used to calculate dividend payments on preferred stock. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=smsi_AccountingStandardsUpdate201711Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioPreviouslyReportedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=smsi_WilliamWAndDievaLSmithMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=smsi_NoteAndWarrantPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=smsi_UnterbergKollerCapitalFundLPAndWilliamWAndDievaLSmithMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=smsi_UnterbergKollerCapitalFundLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesBPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=smsi_OfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=smsi_RegisteredDirectOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=smsi_SutterSecuritiesIncorporatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=smsi_ChardanCapitalMarketsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |