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Trading Arrangements, by Individual [Table] Note 5 - Digital Assets Material Terms of Trading Arrangement [Text Block] Note 6 - Accrued Liabilities Note 7 - Commitments and Contingencies Note 10 - Common Stock Warrants and Warrant Liabilities Note 12 - Stock-based Compensation Note 13 - Divestitures Minimum [Member] Note 2 - Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Details) Note 2 - Summary of Significant Accounting Policies - Schedule of Earnings Per Share, Basic and Diluted (Details) Statistical Measurement [Domain] Note 2 - Summary of Significant Accounting Policies - Outstanding Stock Warrants Excluded from the Diluted Net Loss Per Share Computation (Details) Maximum [Member] Note 3 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) Note 4 - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) Note 5 - Digital Assets - Crypto Asset, Holding (Details) us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Note 5 - Digital Assets - Crypto Asset, Activity (Details) Note 6 - Accrued Liabilities - Summary of Accrued Liabilities (Details) Accounts payable and accrued liabilities us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities Note 7 - Commitments and Contingencies - Lease Expense (Details) Note 10 - Common Stock Warrants and Warrant Liabilities - Schedule of Stockholders' Equity Note, Warrants or Rights (Details) Note 10 - Common Stock Warrants and Warrant Liabilities - Schedule of Stockholders' Equity Note, Warrants or Rights (Details) (Parentheticals) Note 10 - Common Stock Warrants and Warrant Liabilities (Details) Note 12 - Stock-based Compensation - Schedule of Nonvested Restricted Stock Units Activity (Details) Note 13 - Divestitures - Discontinued Operations (Details) Warrant Liabilities [Policy Text Block] The disclosure of accounting policy for warrant liabilities. 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SKY Tokens [Member] Represents SKY tokens. sdev_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePriceOfCommonStockPercentageOfStockOwnedByShareholderMinimum Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percentage of Stock Owned by Shareholder, Minimum Minimum percentage of a shareholder's ownership of common stock used for determining the purchase price of common stock expressed as a percentage of its fair value. Shareholder of More Than 10% [Member] Represents the shareholder of more than 10%. Prepaid Expenses and Other Current Assets [Text Block] The entire disclosure for prepaid expenses and other assets expected to be realized or consumed within one year or the normal operating cycle, if longer. 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Subsequent Event [Member] LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) Share-Based Payment Arrangement [Text Block] Lease Contractual Term [Axis] Lease Contractual Term [Domain] Changes in operating assets and liabilities: Preferred stock, shares issued (in shares) Preferred stock, shares outstanding (in shares) Stock Issued During Period, Shares, New Issues (in shares) Reclassification [Table] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized (in shares) The January 2026 Warrants [Member] Represents the January 2026 warrants. sdev_ComissionPercent Comission, Percent The percentage that the commission will be. Series B Preferred Stock [Member] USDT and USDS Tokens [Member] Represents USDT and USDS tokens. January 2026 Private Placement [Member] Represents the January 2026 Private Placement. Fair Value, by Balance Sheet Grouping [Table] sdev_CryptoAssetNumberOfUnitsAcquired Crypto Asset, Number of Units, Acquired Number of restricted and unrestricted crypto asset units acquired. 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Series F Preferred Stock [Member] sdev_WarrantsExercisableAtTwelveMonthsPercentage Warrants Exercisable at Twelve Months, Percentage The percentage of warrants exercisable twelve months after execution. sdev_WarrantsExercisableAtNinthMonthsPercentage Warrants Exercisable at Ninth Months, Percentage The percentage of warrants exercisable nine months after execution. us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations Cash, cash equivalents and restricted cash of continuing operations, end of period TLF Bio Innovation Warrants [Member] Represents TLF Bio Innovation warrants. New Accounting Pronouncements, Policy [Policy Text Block] Antidilutive Securities, Name [Domain] Concentration Risk, Credit Risk, Policy [Policy Text Block] Statement [Table] Prepaid insurance Operating lease – included in operating cash flows sdev_StockIssuedDuringPeriodSharesWarrantsExercised Stock Issued During Period, Shares, Warrants Exercised The number of shares of stock issued during period due to warrants exercised. The July 2020 Warrants [Member] Represents the July 2020 warrants. sdev_EquityIssuableMaximumOfferingPrice Equity Issuable, Maximum Offering Price The maximum offering price of equity issuable. The November 2021 Warrants [Member] Represents the November 2021 Warrants. Fair value of October 2025 Pre-Funded Warrants upon issuance The fair value of warrants issued during the period. us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue Weighted Average Grant Date Fair Value (in dollars per share) Weighted Average Grant Date Fair Value (in dollars per share) Weighted Average Grant Date Fair Value, Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) NeutroPhase [Member] Represents the distribution agreement for NeutroPhase. us-gaap_LitigationReserve Estimated Litigation Liability us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Wound Care [Member] Represents wound care. 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Interest on Unsecured Convertible Notes us-gaap_ProceedsFromSaleOfIntangibleAssets Proceeds from Sale of Intangible Assets Fair Value, Assets Measured on Recurring Basis [Table Text Block] Non-cash loss on fair value of warrant liabilities in excess of proceeds at issuance Non-cash loss on fair value of warrant liabilities in excess of proceeds at issuance Amount of non-cash gain (loss) on warrant liabilities in excess of proceeds at issuance. us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1 Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Income taxes Proceeds from divestiture us-gaap_ProceedsFromDivestitureOfBusinesses Concentration Risk Type [Domain] Crypto Asset [Domain] Crypto Asset [Axis] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Class of Warrant or Right [Table] us-gaap_LongTermDebt Long-Term Debt us-gaap_LossContingencyAccrualAtCarryingValue Loss Contingency Accrual Statement of Stockholders' Equity [Abstract] Loss Contingency Nature [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Statement of Cash Flows [Abstract] sdev_CryptoAssetPercentOfTotalSupply Crypto Asset, Percent of Total Supply Percentage of total supply of crypto asset. SKY Tokens and Stablecoins [Member] Represents SKY tokens and Stablecoins. Stockholders’ equity (deficit): Product Concentration Risk [Member] Equity Components [Axis] sdev_CryptoAssetPerTokenPrice Crypto Asset, Per Token Price The per token price of a crypto asset. Operating lease liabilities us-gaap_IncreaseDecreaseInOperatingLeaseLiability Stablecoins [Member] Represents stablecoins. us-gaap_PaymentsOfStockIssuanceCosts Payments of Stock Issuance Costs Equity Component [Domain] Staking rewards earned in SKY tokens Amount of increase in crypto asset from staking award. Fair Value, Inputs, Level 2 [Member] us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights Class of Warrant or Right, Number of Securities Called by Warrants or Rights Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 1 [Member] Equity [Text Block] Additional Paid-in Capital [Member] us-gaap_ClassOfWarrantOrRightOutstanding Class of Warrant or Right, Outstanding Outstanding warrants (in shares) Outstanding warrants (in shares) Retained Earnings [Member] Dispositions Number of crypto assets disposed of. January 2026 SKY Tokens [Member] Represents SKY tokens related to the January 2026 Private Placement. Loss Contingency, Nature [Domain] Reclassification of warrant liabilities Represents the amount of reclassification of private placement warrants. Staking Award SKY Tokens [Member] Represents SKY tokens received as staking award. sdev_CommonStockAvailableForIssuance Common Stock Available for Issuance Value amount of common stock available for future issuance. Subsequent Event Type [Domain] sdev_OwnershipPercentage Ownership Percentage Percentage of ownership. Restricted cash held as a certificate of deposit sdev_RestrictedCashHeldAsACertificateOfDepositFairValueDisclosure Fair value portion of restricted cash held as a certificate of deposit. sdev_ProceedsFromIssuanceOrSaleOfEquityNet Proceeds from Issuance or Sale of Equity, Net Amount of net proceeds form the issuance or sale of equity. Subsequent Event [Table] Subsequent Event Type [Axis] Warrants issued for 5:1 reverse stock split due to rounding feature (in shares) Number of warrants issued in reverse stock split. Sale of Stock [Axis] The 2026 Equity Incentive Plan [Member] Represents the 2026 Equity Incentive Plan. The 2024 Warrant Reprice Transaction [Member] Represents the 2024 warrant reprice transaction. The 2026 Plan [Member] Represents the 2026 Plan. June 2024 Warrant [Member] Represents the June 2024 warrants. The October 2025 and January 2026 Pre-Funded Warrants [Member] Represents the October 2025 and January 2026 pre-funded warrants. Election of the holder prior to the date of issuance [Member] Represents the election of the holder prior to the date of issuance. Series F-1 Warrants [Member] Represents the Series F-1 warrants. Performance Based RSUs [Member] Represents Performance based RSUs. Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Time Based RSUs [Member] Represents time-based RSUs. Series F-3 Warrants [Member] Related to Series F-3 Warrants. Received in connection with the January 2026 Private Placement, Number of Tokens Crypto Asset, Number of Units Received From Equity Issuance The number of crypto assets received from equity issuance. Accounts Payable and Accrued Liabilities Disclosure [Text Block] Fair Value Disclosures [Text Block] Liability for Future Policy Benefit Activity [Table] Digital assets and stablecoins received in exchange for pre-funded warrants Digital Assets Received in Exchange for Pre-Funded Warrants Amount of digital assets received in exchange for pre-funded warrants. Share-Based Payment Arrangement, Option [Member] Received as staking rewards, Fair Value Crypto Asset, Recevied As Rewards The value amount of crypto assets received as rewards. sdev_ClassOfWarrantsOrRightsReclassifiedFromLiabilityToEquity Reclassification of October 2025 and January 2026 Pre-Funded Warrant liabilities to equity during period The amount of warrants or rights reclassified from liability to equity. Purchased on digital asset exchanges, Fair Value The value amount of crypto assets acquired through exchange. us-gaap_LiabilitiesCurrent Total current liabilities Other Received as staking rewards, Number of Tokens Crypto Asset, Number of Units Received As Rewards The number of crypto assets received as rewards. Received in connection with the January 2026 Private Placement, Fair Value Crypto Asset, Received From Equity Issuance Value amount of crypto assets received from equity issuance. Purchased on digital asset exchanges, Number of Tokens The number of crypto assets acquired through exchange. Operating loss us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss Temporary Equity, Shares Issued (in shares) Temporary Equity, Shares Outstanding (in shares) Temporary Equity, Shares Authorized (in shares) Lease, Cost [Table Text Block] Mezzanine (temporary) equity: Other Commitments [Table] The July 2024 Series F-1 Warrants [Member] Related to warrants. Net cash (used in) provided by operating activities, discontinued operations us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations Net cash provided by investing activities, discontinued operations us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations us-gaap_PreferredStockConvertibleSharesIssuable Preferred Stock, Convertible, Shares Issuable (in shares) Stock-based compensation expense Gain on divestiture us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Non-cash gain on divestiture General and administrative us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Net (loss) income from continuing operations, before taxes Additional paid-in capital Debt Disclosure [Text Block] Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Debt Conversion, Name [Domain] Debt Conversion Description [Axis] Prepaid expenses and other current assets Total prepaid expenses and other current assets Use of Estimates, Policy [Policy Text Block] sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVolumeWeightedAveragePriceThresholdOne Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Volume-Weighted Average Price Threshold One (in dollars per share) The volume-weighted average price of the first threshold for the share-based compensation arrangements by share-based payment award equity instruments other than options. us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments Debt Instrument, Convertible, Number of Equity Instruments us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Issuance of common stock in at the market offering, net sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsThirdThresholdValue Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Third Threshold, Value Amount of the third threshold of share-based compensation arrangements by share-based payment awards equity instruments other than options. Conversion of Preferred Stock to common stock sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFirstThresholdValue Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, First Threshold, Value Amount of the first threshold of share-based compensation arrangements by share-based payment awards equity instruments other than options. us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Series B Preferred Stock, Post-split [Member] Related to post split stock. sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSecondThresholdValue Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Second Threshold, Value Amount of the second threshold of share-based compensation arrangements by share-based payment awards equity instruments other than options. us-gaap_AmortizationOfFinancingCostsAndDiscounts Amortization of Debt Issuance Costs and Discounts sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVolumeWeightedAveragePriceThresholdTwo Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Volume-Weighted Average Price Threshold Two (in dollars per share) The volume-weighted average price of the second threshold for the share-based compensation arrangements by share-based payment award equity instruments other than options. sdev_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVolumeWeightedAveragePriceThresholdThree Share-Based Compensation Arrangements by Share-Based Payment Award Equity Instruments Other Than Options Volume-Weighted Average Price Threshold Three (in dollars per share) The volume-weighted average price of the third threshold for the share-based compensation arrangements by share-based payment award equity instruments other than options. VWAP RSUs [Member] Represents the VWAP RSUs. us-gaap_AssetsCurrent Total current assets Vesting of director restricted stock awards sdev_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualIncreaseInSharesAuthorizedPercentageOfOutstandingCommonStock Share-based Compensation Arrangement by Share-based Payment Award, Annual Increase in Shares Authorized, Percentage of Outstanding Common Stock Annual increase in number of shares originally approved for awards under the equity-based compensation plan expressed as a percentage of outstanding common stock. Conversion of Unsecured Convertible Notes To Common Stock [Member] Represents the conversion of the unsecured convertible debt into common stock. Issuance of common stock in at the market offering, net (in shares) Stock Issued During Period, Shares, New Issues September 2022 Warrants [Member] Represents the September 2022 warrants. Restricted Stock Units (RSUs) [Member] Conversion of Preferred Stock to common stock (in shares) Debt Instrument, Name [Domain] us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage Vesting of director restricted stock awards (in shares) Class of Stock [Domain] us-gaap_StockIssuedDuringPeriodSharesReverseStockSplits Stock Issued During Period, Shares, Reverse Stock Splits (in shares) Schedule of Long-Term Debt Instruments [Table] Net increase (decrease) in cash and cash equivalents, discontinued operations us-gaap_NetCashProvidedByUsedInDiscontinuedOperations Debt Instrument [Axis] Temporary Equity, Par or Stated Value Per Share (in dollars per share) Operating activities: us-gaap_StockOptionPlanExpense Stock-based compensation expense related to employee and director stock awards Investing activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash used in operating activities, continuing operations Financing activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities, continuing operations us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by (used in) financing activities, continuing operations Impairment of long-lived assets Long-Lived Asset, Held and Used, Impairment Loss Accounting Policies [Abstract] Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Office Space for Corporate Headquarters in Emeryville, California [Member] Represents office space for its corporate headquarters located in Emeryville, California. Other Liabilities Disclosure [Text Block] us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Diluted (loss) earnings per share from continuing operations (in dollars per share) us-gaap_StockRepurchasedDuringPeriodValue Redemption of Series F Preferred Stock Basic (loss) earnings per share from continuing operations (in dollars per share) us-gaap_StockRepurchasedDuringPeriodShares Redemption of Series F Preferred Stock (in shares) Net (loss) income from continuing operations Net (loss) income from continuing operations Warrants and Pre-funded Warrants [Member] Represents warrants and pre-funded warrants. Receivable with Imputed Interest [Table] Income Statement [Abstract] Net income from discontinued operations before income taxes us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax Diluted earnings per share from discontinued operations (in dollars per share) us-gaap_NumberOfOperatingSegments Number of Operating Segments Research and development Amount of research and development expense attributable to disposal group, including, but not limited to, discontinued operation. Basic earnings per share from discontinued operations (in dollars per share) us-gaap_NumberOfReportableSegments Number of Reportable Segments Sales and marketing sdev_DisposalGroupIncludingDiscontinuedOperationSellingAndMarketingExpense Amount of selling and marketing expense attributable to disposal group, including, but not limited to, discontinued operation. us-gaap_StockRedeemedOrCalledDuringPeriodValue Stock Redeemed or Called During Period, Value Income Tax Contingency [Table] Non-cash gain on changes in fair value of warrant liabilities Non-cash gain on changes in fair value of warrant liabilities Fair Value Adjustment of Warrants Income Tax Uncertainties, Policy [Policy Text Block] Redeemable Preferred Stock [Member] Net income (loss) Net (loss) income attributable to common stockholders us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic Net (loss) income attributable to common stockholders Repurchase of warrants Amount of additional paid in capital of warrants repurchased. Professional Services Amount of current professional services payable. Unsecured Convertible Notes, net of discounts (Benefit) Provision for income taxes us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation October 2025 Pre-Funded Warrants [Member] Represents the October 2025 pre-funded warrants. us-gaap_DebtConversionOriginalDebtAmount1 Debt Conversion, Original Debt, Amount Conversions of Unsecured Convertible Notes to common stock sdev_PercentOfClosingPrice Percent of Closing Price The percentage of the closing price. us-gaap_DebtConversionConvertedInstrumentSharesIssued1 Debt Conversion, Converted Instrument, Shares Issued Reverse Stock Split [Member] The conversion of a reverse stock split where there is a reduction in the shares outstanding. Conversions of preferred stock to common stock Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block] Tabular disclosure of the components of cash, cash equivalents, restricted cash and restricted cash equivalents. Income Tax Disclosure [Text Block] Accounting Standards Update and Change in Accounting Principle [Table] Income Tax, Policy [Policy Text Block] Deferred financing costs Related Party Transaction [Table] Related Party Transactions Disclosure [Text Block] sdev_EquityOfferingRightToConsentModificationOfDigitalAssetStrategyPercentageOfOriginalPurchaseOwned Equity Offering, Right to Consent Modification of Digital Asset Strategy, Percentage of Original Purchase Owned Percentage of original purchase required to be owned for right to consent modification of digital assets strategy. sdev_EquityOfferingPeriodForRightToConsentModificationOfDigitalAssetStrategy Equity Offering, Period for Right to Consent Modification of Digital Asset Strategy Period for right to consent modification of digital assets strategy. Fair Value Hierarchy and NAV [Domain] us-gaap_StockRedeemedOrCalledDuringPeriodShares Stock Redeemed or Called During Period, Shares Measurement Frequency [Domain] Crypto Asset, Cost Basis Statement of Financial Position [Abstract] Digital assets, at fair value us-gaap_NonoperatingIncomeExpense Total non-operating income (expense), net Warrant liabilities transferred to equity Warrant Liability [Member] Represents information about warrant liability. us-gaap_RepaymentsOfNotesPayable Repayment of bridge loan Dispositions, Fair Value Unrealized gain on digital assets Unrealized gain on digital assets Crypto Asset, Unrealized Gain (Loss), Operating SKY digital assets Crypto Asset, Fair Value Crypto Asset, Fair Value Balance, Fair Value Balance, Fair Value Unsecured Convertible Notes [Member] Relating Unsecured Convertible Notes. Crypto Asset [Text Block] us-gaap_PaymentForAcquisitionCryptoAsset Purchases of SKY tokens Assets, Total [Member] Proceeds from redemption of stablecoins Crypto Asset, Holding [Table] us-gaap_TangibleAssetImpairmentCharges Tangible Asset Impairment Charges Fair Value, Recurring [Member] Other assets us-gaap_PaymentsForRepurchaseOfConvertiblePreferredStock Payment on redemption of Series F Preferred Stock Net change in fair value Nonmonetary Transaction Type [Domain] Nonmonetary Transaction Type [Axis] us-gaap_IncreaseDecreaseInOtherOperatingAssets Other assets Other assets us-gaap_WarrantsAndRightsOutstanding Warrant liabilities Warrant liabilities dei_DocumentType Document Type Operating expenses: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Document Information [Line Items] Document Quarterly Report us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage us-gaap_PaymentsForRepurchaseOfWarrants Payments on warrants purchase Payments for Repurchase of Warrants Crypto Asset, Unrealized Gain (Loss), Operating and Nonoperating Weighted-average remaining lease term (in years) (Year) Document Information [Table] The December 2023 Warrants [Member] Represents December 2023 Warrants. The November 2022 A-1 Warrants [Member] Represents November 2022 A-1 Warrants. Effect of dilutive January 2026 Pre-Funded Warrants (in shares) Anti-dilutive securities (in shares) Antidilutive Securities [Axis] dei_EntityInteractiveDataCurrent Entity Interactive Data Current us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Document Transition Report Diluted (in shares) us-gaap_OperatingExpenses Total operating expenses Basic and diluted net (loss) income per share attributable to common stockholders: The 2021 Private Placement Program [Member] Represents the 2021 private placement program. Effect of dilutive in-the-money warrants and RSUs (in shares) Basic (in shares) Derivative Instrument [Axis] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] us-gaap_EarningsPerShareBasic Basic (loss) earnings per share attributable to common stockholders (in dollars per share) Indemnification Agreement [Member] sdev_MaximumPercentageOfCommonStockOutstanding Maximum Percentage of Common Stock Outstanding Represents maximum percentage of common stock outstanding. Title and Position [Domain] Earnings Per Share, Policy [Policy Text Block] Restricted cash included in other assets us-gaap_RestrictedCashAndCashEquivalentsNoncurrent Amortization of debt discounts on convertible notes Document Fiscal Period Focus Document Fiscal Year Focus us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 Stockholders' Equity Note, Stock Split, Conversion Ratio Restricted cash included in current assets us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue Amendment Flag The 2017 Omnibus Incentive Plan [Member] Represents the 2017 Omnibus Incentive Plan. Common Stock [Member] sdev_PolicyTable dei_DocumentPeriodEndDate Document Period End Date Net income from discontinued operations, net of taxes sdev_LossIncomeFromDiscontinuedOperationsNetOfTaxAttributableToParent Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Legal Entity [Axis] Operating lease – expense dei_EntityFileNumber Entity File Number Entity Tax Identification Number Supplemental disclosure of cash flow information: Entity [Domain] Entity Central Index Key dei_EntityRegistrantName Entity Registrant Name dei_EntityCurrentReportingStatus Entity Current Reporting Status Entity Incorporation, State or Country Code Current Fiscal Year End Date Incentive Stock Options (ISOs) [Member] Represents incentive stock options (ISOs). Entity Filer Category dei_EntityShellCompany Entity Shell Company Entity Emerging Growth Company Entity Small Business us-gaap_OperatingIncomeLoss Operating loss The July 2024 Series F-1 and F-3 Warrants [Member] Represents the July 2024 series F-1 and F-3 warrants. Cash and cash equivalents sdev_CashAndCashEquivalentsIncludingDisposalGroup Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Warrant liabilities, at fair value dei_EntityAddressStateOrProvince Entity Address, State or Province dei_EntityAddressCityOrTown Entity Address, City or Town Other (in shares) Accumulated deficit dei_EntityAddressAddressLine1 Entity Address, Address Line One Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] dei_CityAreaCode City Area Code Crypto Asset, Activity [Table Text Block] Crypto Asset, Holding [Table Text Block] dei_LocalPhoneNumber Local Phone Number dei_EntityAddressPostalZipCode Entity Address, Postal Zip Code Preferred Stock [Member] Title of 12(b) Security Security Exchange Name Trading Symbol us-gaap_DebtInstrumentConvertibleConversionPrice1 Debt Instrument, Convertible, Conversion Price (in dollars per share) Class of Stock [Axis] Warrants exercised (in shares) The number of warrants or rights exercised during period. dei_EntityCommonStockSharesOutstanding Entity Common Stock, Shares Outstanding (in shares) us-gaap_OtherAssetsCurrent Other Director [Member] Weighted average shares outstanding: Scenario [Axis] Scenario [Domain] Proceeds from warrant exercises Proceeds from Warrant Exercises Employees and Directors [Member] Represents information about employees and directors. sdev_LeaseTerminationFee Lease Termination Fee The amount of fee resulting from the termination of lease. Common stock, par value (in dollars per share) us-gaap_GainLossOnTerminationOfLease Gain (Loss) on Termination of Lease Basis of Accounting, Policy [Policy Text Block] Avenova Assets [Member] Represents the Avenova Assets. Derivative Contract [Domain] us-gaap_OtherNonoperatingIncomeExpense Other expense, net Sale of Stock [Domain] sdev_FairValueOfWarrantsExercised Exercise of October 2025 Pre-Funded Warrants Fair value amount of warrants exercised. us-gaap_Assets TOTAL ASSETS R01 [Member] Represents R01. Cash and Cash Equivalents, Policy [Policy Text Block] Framework [Member] Represents Framework [Member] Cash and cash equivalents At the Market Offering Agreement [Member] Related to an at the market offering agreement. Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Net income from discontinued operations, net of taxes Net income from discontinued operations, net of taxes (Note 13) us-gaap_EarningsPerShareDiluted Diluted (loss) earnings per share attributable to common stockholders (in dollars per share) Revenue from Contract with Customer [Policy Text Block] Cost of goods sold us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold Accounts and Financing Receivables [Table] Fair Value by Liability Class [Domain] Digital Assets [Policy Text Block] Disclosure of accounting policy for digital assets. Disposal Group Name [Domain] Gross profit us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss Interest paid Net sales us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue Total operating expenses us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense Disposal Groups, Including Discontinued Operations [Table] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber Number of Shares (in shares) Number of Shares (in shares) Disposal Groups, Including Discontinued Operations [Table Text Block] Number of Shares, Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) Disposal Group Name [Axis] us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration Disposal Group, Including Discontinued Operation, Consideration us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures Number of Shares, Forfeited/Canceled (in shares) us-gaap_StockholdersEquity Total stockholders’ equity (deficit) Balance Balance Weighted Average Grant Date Fair Value, Forfeited/Canceled (in dollars per share) Stockholders' Equity Note, Warrants or Rights Disclosure [Text Block] The entire disclosure of warrants or rights. Stock, Class of Stock [Table] Concentration Risk Benchmark [Axis] Warrants exercised on a cashless basis The amount of warrants exercised on cashless basis. Concentration Risk Benchmark [Domain] ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] Staking revenue ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Commitments and Contingencies sdev_OperatingLeaseLiabilityDerecognized Operating Lease, Liability Derecognized The amount of liability derecognized as part of operating lease. sdev_ClassOfWarrantOrRightNumberOfSecuritiesWithholding Class Of Warrant Or Right, Number Of Securities, Withholding (in shares) The number of securities of withholding.