3.22.1 html 347 526 1 true 108 0 false 12 false false R1.htm 000100 - Document - Document and Entity Information Sheet http://sanuwave.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 010000 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://sanuwave.com/role/ConsolidatedBalanceSheets CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 010100 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://sanuwave.com/role/ConsolidatedBalanceSheetsParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 020000 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS Sheet http://sanuwave.com/role/ConsolidatedStatementsOfComprehensiveLoss CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS Statements 4 false false R5.htm 030000 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT Sheet http://sanuwave.com/role/ConsolidatedStatementsOfStockholdersDeficit CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT Statements 5 false false R6.htm 040000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://sanuwave.com/role/ConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 040100 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Sheet http://sanuwave.com/role/ConsolidatedStatementsOfCashFlowsParenthetical CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Statements 7 false false R8.htm 060100 - Disclosure - Nature of the Business and Basis of Presentation Sheet http://sanuwave.com/role/NatureOfBusinessAndBasisOfPresentation Nature of the Business and Basis of Presentation Notes 8 false false R9.htm 060200 - Disclosure - Going Concern Sheet http://sanuwave.com/role/GoingConcern Going Concern Notes 9 false false R10.htm 060300 - Disclosure - Summary of Significant Accounting Policies Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 060400 - Disclosure - Loss per Share Sheet http://sanuwave.com/role/LossPerShare Loss per Share Notes 11 false false R12.htm 060500 - Disclosure - Asset Purchase Agreement Sheet http://sanuwave.com/role/AssetPurchaseAgreement Asset Purchase Agreement Notes 12 false false R13.htm 060600 - Disclosure - Inventory Sheet http://sanuwave.com/role/Inventory Inventory Notes 13 false false R14.htm 060700 - Disclosure - Property and Equipment Sheet http://sanuwave.com/role/PropertyAndEquipment Property and Equipment Notes 14 false false R15.htm 060800 - Disclosure - Goodwill and Other Intangible Assets Sheet http://sanuwave.com/role/GoodwillAndOtherIntangibleAssets Goodwill and Other Intangible Assets Notes 15 false false R16.htm 060900 - Disclosure - Accrued Expenses Sheet http://sanuwave.com/role/AccruedExpenses Accrued Expenses Notes 16 false false R17.htm 061000 - Disclosure - Revenue Sheet http://sanuwave.com/role/Revenue Revenue Notes 17 false false R18.htm 061100 - Disclosure - Concentration of Credit Risk and Limited Suppliers Sheet http://sanuwave.com/role/ConcentrationOfCreditRiskAndLimitedSuppliers Concentration of Credit Risk and Limited Suppliers Notes 18 false false R19.htm 061200 - Disclosure - Accounts Receivable Factoring Sheet http://sanuwave.com/role/AccountsReceivableFactoring Accounts Receivable Factoring Notes 19 false false R20.htm 061300 - Disclosure - Notes Payable Notes http://sanuwave.com/role/NotesPayable Notes Payable Notes 20 false false R21.htm 061400 - Disclosure - Common Stock Purchase Warrants Sheet http://sanuwave.com/role/CommonStockPurchaseWarrants Common Stock Purchase Warrants Notes 21 false false R22.htm 061500 - Disclosure - Fair Value Measurements Sheet http://sanuwave.com/role/FairValueMeasurements Fair Value Measurements Notes 22 false false R23.htm 061600 - Disclosure - Leases Sheet http://sanuwave.com/role/Leases Leases Notes 23 false false R24.htm 061700 - Disclosure - Common Stock Sheet http://sanuwave.com/role/CommonStock Common Stock Notes 24 false false R25.htm 061800 - Disclosure - Preferred Stock Sheet http://sanuwave.com/role/PreferredStock Preferred Stock Notes 25 false false R26.htm 061900 - Disclosure - Commitments and Contingencies Sheet http://sanuwave.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 26 false false R27.htm 062000 - Disclosure - Related party transactions Sheet http://sanuwave.com/role/RelatedPartyTransactions Related party transactions Notes 27 false false R28.htm 062100 - Disclosure - Stock-based Compensation Sheet http://sanuwave.com/role/StockbasedCompensation Stock-based Compensation Notes 28 false false R29.htm 062200 - Disclosure - Joint ventures Sheet http://sanuwave.com/role/JointVentures Joint ventures Notes 29 false false R30.htm 062300 - Disclosure - Income taxes Sheet http://sanuwave.com/role/IncomeTaxes Income taxes Notes 30 false false R31.htm 062400 - Disclosure - Subsequent Events Sheet http://sanuwave.com/role/SubsequentEvents Subsequent Events Notes 31 false false R32.htm 070300 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://sanuwave.com/role/SummaryOfSignificantAccountingPolicies 32 false false R33.htm 080300 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://sanuwave.com/role/SummaryOfSignificantAccountingPolicies 33 false false R34.htm 080400 - Disclosure - Loss per Share (Tables) Sheet http://sanuwave.com/role/LossPerShareTables Loss per Share (Tables) Tables http://sanuwave.com/role/LossPerShare 34 false false R35.htm 080500 - Disclosure - Asset Purchase Agreement (Tables) Sheet http://sanuwave.com/role/AssetPurchaseAgreementTables Asset Purchase Agreement (Tables) Tables http://sanuwave.com/role/AssetPurchaseAgreement 35 false false R36.htm 080600 - Disclosure - Inventory (Tables) Sheet http://sanuwave.com/role/InventoryTables Inventory (Tables) Tables http://sanuwave.com/role/Inventory 36 false false R37.htm 080700 - Disclosure - Property and Equipment (Tables) Sheet http://sanuwave.com/role/PropertyAndEquipmentTables Property and Equipment (Tables) Tables http://sanuwave.com/role/PropertyAndEquipment 37 false false R38.htm 080800 - Disclosure - Goodwill and Other Intangible Assets (Tables) Sheet http://sanuwave.com/role/GoodwillAndOtherIntangibleAssetsTables Goodwill and Other Intangible Assets (Tables) Tables http://sanuwave.com/role/GoodwillAndOtherIntangibleAssets 38 false false R39.htm 080900 - Disclosure - Accrued Expenses (Tables) Sheet http://sanuwave.com/role/AccruedExpensesTables Accrued Expenses (Tables) Tables http://sanuwave.com/role/AccruedExpenses 39 false false R40.htm 081000 - Disclosure - Revenue (Tables) Sheet http://sanuwave.com/role/RevenueTables Revenue (Tables) Tables http://sanuwave.com/role/Revenue 40 false false R41.htm 081100 - Disclosure - Concentration of Credit Risk and Limited Suppliers (Tables) Sheet http://sanuwave.com/role/ConcentrationOfCreditRiskAndLimitedSuppliersTables Concentration of Credit Risk and Limited Suppliers (Tables) Tables http://sanuwave.com/role/ConcentrationOfCreditRiskAndLimitedSuppliers 41 false false R42.htm 081200 - Disclosure - Accounts Receivable Factoring (Tables) Sheet http://sanuwave.com/role/AccountsReceivableFactoringTables Accounts Receivable Factoring (Tables) Tables http://sanuwave.com/role/AccountsReceivableFactoring 42 false false R43.htm 081300 - Disclosure - Notes Payable (Tables) Notes http://sanuwave.com/role/NotesPayableTables Notes Payable (Tables) Tables http://sanuwave.com/role/NotesPayable 43 false false R44.htm 081400 - Disclosure - Common Stock Purchase Warrants (Tables) Sheet http://sanuwave.com/role/CommonStockPurchaseWarrantsTables Common Stock Purchase Warrants (Tables) Tables http://sanuwave.com/role/CommonStockPurchaseWarrants 44 false false R45.htm 081500 - Disclosure - Fair Value Measurements (Tables) Sheet http://sanuwave.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://sanuwave.com/role/FairValueMeasurements 45 false false R46.htm 081600 - Disclosure - Leases (Tables) Sheet http://sanuwave.com/role/LeasesTables Leases (Tables) Tables http://sanuwave.com/role/Leases 46 false false R47.htm 082100 - Disclosure - Stock-based Compensation (Tables) Sheet http://sanuwave.com/role/StockbasedCompensationTables Stock-based Compensation (Tables) Tables http://sanuwave.com/role/StockbasedCompensation 47 false false R48.htm 082300 - Disclosure - Income taxes (Tables) Sheet http://sanuwave.com/role/IncomeTaxesTables Income taxes (Tables) Tables http://sanuwave.com/role/IncomeTaxes 48 false false R49.htm 090100 - Disclosure - Nature of the Business and Basis of Presentation (Details) Sheet http://sanuwave.com/role/NatureOfBusinessAndBasisOfPresentationDetails Nature of the Business and Basis of Presentation (Details) Details http://sanuwave.com/role/NatureOfBusinessAndBasisOfPresentation 49 false false R50.htm 090302 - Disclosure - Summary of Significant Accounting Policies, Property and Equipment (Details) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails Summary of Significant Accounting Policies, Property and Equipment (Details) Details 50 false false R51.htm 090304 - Disclosure - Summary of Significant Accounting Policies, Goodwill and Other Intangible Assets (Details) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesGoodwillAndOtherIntangibleAssetsDetails Summary of Significant Accounting Policies, Goodwill and Other Intangible Assets (Details) Details 51 false false R52.htm 090306 - Disclosure - Summary of Significant Accounting Policies, Impairment of Long-lived Assets (Details) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesImpairmentOfLonglivedAssetsDetails Summary of Significant Accounting Policies, Impairment of Long-lived Assets (Details) Details 52 false false R53.htm 090308 - Disclosure - Summary of Significant Accounting Policies, Segment Information (Details) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesSegmentInformationDetails Summary of Significant Accounting Policies, Segment Information (Details) Details 53 false false R54.htm 090310 - Disclosure - Summary of Significant Accounting Policies, Revenue Recognition (Details) Sheet http://sanuwave.com/role/SummaryOfSignificantAccountingPoliciesRevenueRecognitionDetails Summary of Significant Accounting Policies, Revenue Recognition (Details) Details 54 false false R55.htm 090400 - Disclosure - Loss per Share, Weighted Average Shares Outstanding (Details) Sheet http://sanuwave.com/role/LossPerShareWeightedAverageSharesOutstandingDetails Loss per Share, Weighted Average Shares Outstanding (Details) Details 55 false false R56.htm 090402 - Disclosure - Loss per Share, Anti Dilutive Equity Securities (Details) Sheet http://sanuwave.com/role/LossPerShareAntiDilutiveEquitySecuritiesDetails Loss per Share, Anti Dilutive Equity Securities (Details) Details 56 false false R57.htm 090500 - Disclosure - Asset Purchase Agreement, Purchase Consideration (Details) Sheet http://sanuwave.com/role/AssetPurchaseAgreementPurchaseConsiderationDetails Asset Purchase Agreement, Purchase Consideration (Details) Details 57 false false R58.htm 090502 - Disclosure - Asset Purchase Agreement, Estimates of Fair Value of Assets Acquired (Details) Sheet http://sanuwave.com/role/AssetPurchaseAgreementEstimatesOfFairValueOfAssetsAcquiredDetails Asset Purchase Agreement, Estimates of Fair Value of Assets Acquired (Details) Details 58 false false R59.htm 090504 - Disclosure - Asset Purchase Agreement, Estimated Useful Lives for Intangible Assets (Details) Sheet http://sanuwave.com/role/AssetPurchaseAgreementEstimatedUsefulLivesForIntangibleAssetsDetails Asset Purchase Agreement, Estimated Useful Lives for Intangible Assets (Details) Details 59 false false R60.htm 090506 - Disclosure - Asset Purchase Agreement, Acquisition and Related Costs (Details) Sheet http://sanuwave.com/role/AssetPurchaseAgreementAcquisitionAndRelatedCostsDetails Asset Purchase Agreement, Acquisition and Related Costs (Details) Details 60 false false R61.htm 090508 - Disclosure - Asset Purchase Agreement, Unaudited Actual and Pro forma Information (Details) Sheet http://sanuwave.com/role/AssetPurchaseAgreementUnauditedActualAndProFormaInformationDetails Asset Purchase Agreement, Unaudited Actual and Pro forma Information (Details) Details 61 false false R62.htm 090600 - Disclosure - Inventory (Details) Sheet http://sanuwave.com/role/InventoryDetails Inventory (Details) Details http://sanuwave.com/role/InventoryTables 62 false false R63.htm 090700 - Disclosure - Property and Equipment (Details) Sheet http://sanuwave.com/role/PropertyAndEquipmentDetails Property and Equipment (Details) Details http://sanuwave.com/role/PropertyAndEquipmentTables 63 false false R64.htm 090800 - Disclosure - Goodwill and Other Intangible Assets (Details) Sheet http://sanuwave.com/role/GoodwillAndOtherIntangibleAssetsDetails Goodwill and Other Intangible Assets (Details) Details http://sanuwave.com/role/GoodwillAndOtherIntangibleAssetsTables 64 false false R65.htm 090900 - Disclosure - Accrued Expenses (Details) Sheet http://sanuwave.com/role/AccruedExpensesDetails Accrued Expenses (Details) Details http://sanuwave.com/role/AccruedExpensesTables 65 false false R66.htm 091004 - Disclosure - Revenue, Disaggregation of Revenue (Details) Sheet http://sanuwave.com/role/RevenueDisaggregationOfRevenueDetails Revenue, Disaggregation of Revenue (Details) Details 66 false false R67.htm 091006 - Disclosure - Revenue, Contract Liabilities (Details) Sheet http://sanuwave.com/role/RevenueContractLiabilitiesDetails Revenue, Contract Liabilities (Details) Details 67 false false R68.htm 091100 - Disclosure - Concentration of Credit Risk and Limited Suppliers (Details) Sheet http://sanuwave.com/role/ConcentrationOfCreditRiskAndLimitedSuppliersDetails Concentration of Credit Risk and Limited Suppliers (Details) Details http://sanuwave.com/role/ConcentrationOfCreditRiskAndLimitedSuppliersTables 68 false false R69.htm 091200 - Disclosure - Accounts Receivable Factoring (Details) Sheet http://sanuwave.com/role/AccountsReceivableFactoringDetails Accounts Receivable Factoring (Details) Details http://sanuwave.com/role/AccountsReceivableFactoringTables 69 false false R70.htm 091300 - Disclosure - Notes Payable, Outstanding Notes Payable (Details) Notes http://sanuwave.com/role/NotesPayableOutstandingNotesPayableDetails Notes Payable, Outstanding Notes Payable (Details) Details 70 false false R71.htm 091302 - Disclosure - Notes Payable, Senior Secured Promissory Note Payable, in Default (Details) Notes http://sanuwave.com/role/NotesPayableSeniorSecuredPromissoryNotePayableInDefaultDetails Notes Payable, Senior Secured Promissory Note Payable, in Default (Details) Details 71 false false R72.htm 091304 - Disclosure - Notes Payable, Convertible Promissory Notes Payable, in Default (Details) Notes http://sanuwave.com/role/NotesPayableConvertiblePromissoryNotesPayableInDefaultDetails Notes Payable, Convertible Promissory Notes Payable, in Default (Details) Details 72 false false R73.htm 091306 - Disclosure - Notes Payable, April 2021 Securities Purchase Agreement and Warrants (in Default) (Details) Notes http://sanuwave.com/role/NotesPayableApril2021SecuritiesPurchaseAgreementAndWarrantsInDefaultDetails Notes Payable, April 2021 Securities Purchase Agreement and Warrants (in Default) (Details) Details 73 false false R74.htm 091308 - Disclosure - Notes Payable, December 2021 Advance on Future Receipts Financing (Details) Notes http://sanuwave.com/role/NotesPayableDecember2021AdvanceOnFutureReceiptsFinancingDetails Notes Payable, December 2021 Advance on Future Receipts Financing (Details) Details 74 false false R75.htm 091310 - Disclosure - Notes Payable, Warrant issuances to Leviston and Five Institutions' in April, May and September 2021 (Details) Notes http://sanuwave.com/role/NotesPayableWarrantIssuancesToLevistonAndFiveInstitutionsInAprilMayAndSeptember2021Details Notes Payable, Warrant issuances to Leviston and Five Institutions' in April, May and September 2021 (Details) Details 75 false false R76.htm 091312 - Disclosure - Notes Payable, Interest rates on Leviston and Five Institutions' Notes, Conversion Option, and Loss on Issuance (Details) Notes http://sanuwave.com/role/NotesPayableInterestRatesOnLevistonAndFiveInstitutionsNotesConversionOptionAndLossOnIssuanceDetails Notes Payable, Interest rates on Leviston and Five Institutions' Notes, Conversion Option, and Loss on Issuance (Details) Details 76 false false R77.htm 091314 - Disclosure - Notes Payable, Convertible Promissory Notes Payable (HealthTronics), in Default (Details) Notes http://sanuwave.com/role/NotesPayableConvertiblePromissoryNotesPayableHealthtronicsInDefaultDetails Notes Payable, Convertible Promissory Notes Payable (HealthTronics), in Default (Details) Details 77 false false R78.htm 091316 - Disclosure - Notes Payable, Convertible Promissory Notes Payable (Stolarski), in Default (Details) Notes http://sanuwave.com/role/NotesPayableConvertiblePromissoryNotesPayableStolarskiInDefaultDetails Notes Payable, Convertible Promissory Notes Payable (Stolarski), in Default (Details) Details 78 false false R79.htm 091318 - Disclosure - Notes Payable, September 2021 Advances on Future Receipts Financing (Details) Notes http://sanuwave.com/role/NotesPayableSeptember2021AdvancesOnFutureReceiptsFinancingDetails Notes Payable, September 2021 Advances on Future Receipts Financing (Details) Details 79 false false R80.htm 091320 - Disclosure - Notes Payable, SBA Loans (Details) Notes http://sanuwave.com/role/NotesPayableSbaLoansDetails Notes Payable, SBA Loans (Details) Details 80 false false R81.htm 091400 - Disclosure - Common Stock Purchase Warrants (Details) Sheet http://sanuwave.com/role/CommonStockPurchaseWarrantsDetails Common Stock Purchase Warrants (Details) Details http://sanuwave.com/role/CommonStockPurchaseWarrantsTables 81 false false R82.htm 091500 - Disclosure - Fair Value Measurements, Liabilities Measured at Fair Value on Recurring Basis (Details) Sheet http://sanuwave.com/role/FairValueMeasurementsLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails Fair Value Measurements, Liabilities Measured at Fair Value on Recurring Basis (Details) Details 82 false false R83.htm 091502 - Disclosure - Fair Value Measurements, Warrants Fair Value, Outstanding and Valuation Model (Details) Sheet http://sanuwave.com/role/FairValueMeasurementsWarrantsFairValueOutstandingAndValuationModelDetails Fair Value Measurements, Warrants Fair Value, Outstanding and Valuation Model (Details) Details 83 false false R84.htm 091600 - Disclosure - Leases, ROU Assets and Lease Liability (Details) Sheet http://sanuwave.com/role/LeasesRouAssetsAndLeaseLiabilityDetails Leases, ROU Assets and Lease Liability (Details) Details 84 false false R85.htm 091602 - Disclosure - Leases, Lease Costs (Details) Sheet http://sanuwave.com/role/LeasesLeaseCostsDetails Leases, Lease Costs (Details) Details 85 false false R86.htm 091604 - Disclosure - Leases, Cash Paid for Amounts Included in Measurement of Lease Liabilities (Details) Sheet http://sanuwave.com/role/LeasesCashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesDetails Leases, Cash Paid for Amounts Included in Measurement of Lease Liabilities (Details) Details 86 false false R87.htm 091606 - Disclosure - Leases, Operating Leases, Remaining Lease Terms (Details) Sheet http://sanuwave.com/role/LeasesOperatingLeasesRemainingLeaseTermsDetails Leases, Operating Leases, Remaining Lease Terms (Details) Details 87 false false R88.htm 091610 - Disclosure - Leases, Finance Lease, Remaining Lease Terms (Details) Sheet http://sanuwave.com/role/LeasesFinanceLeaseRemainingLeaseTermsDetails Leases, Finance Lease, Remaining Lease Terms (Details) Details 88 false false R89.htm 091700 - Disclosure - Common Stock (Details) Sheet http://sanuwave.com/role/CommonStockDetails Common Stock (Details) Details http://sanuwave.com/role/CommonStockPurchaseWarrantsTables 89 false false R90.htm 091800 - Disclosure - Preferred Stock (Details) Sheet http://sanuwave.com/role/PreferredStockDetails Preferred Stock (Details) Details http://sanuwave.com/role/PreferredStock 90 false false R91.htm 092000 - Disclosure - Related party transactions (Details) Sheet http://sanuwave.com/role/RelatedPartyTransactionsDetails Related party transactions (Details) Details http://sanuwave.com/role/RelatedPartyTransactions 91 false false R92.htm 092100 - Disclosure - Stock-based Compensation, Stock Inventive Plan (Details) Sheet http://sanuwave.com/role/StockbasedCompensationStockInventivePlanDetails Stock-based Compensation, Stock Inventive Plan (Details) Details 92 false false R93.htm 092104 - Disclosure - Stock-based Compensation, Weighted Average Assumptions (Details) Sheet http://sanuwave.com/role/StockbasedCompensationWeightedAverageAssumptionsDetails Stock-based Compensation, Weighted Average Assumptions (Details) Details 93 false false R94.htm 092200 - Disclosure - Joint ventures (Details) Sheet http://sanuwave.com/role/JointVenturesDetails Joint ventures (Details) Details http://sanuwave.com/role/JointVentures 94 false false R95.htm 092302 - Disclosure - Income taxes, Components of Income Tax Provision (Benefit) from Continuing Operations (Details) Sheet http://sanuwave.com/role/IncomeTaxesComponentsOfIncomeTaxProvisionBenefitFromContinuingOperationsDetails Income taxes, Components of Income Tax Provision (Benefit) from Continuing Operations (Details) Details 95 false false R96.htm 092304 - Disclosure - Income taxes, Income Tax Provision (Benefit) (Details) Sheet http://sanuwave.com/role/IncomeTaxesIncomeTaxProvisionBenefitDetails Income taxes, Income Tax Provision (Benefit) (Details) Details 96 false false R97.htm 092306 - Disclosure - Income taxes, Deferred Tax Assets (Details) Sheet http://sanuwave.com/role/IncomeTaxesDeferredTaxAssetsDetails Income taxes, Deferred Tax Assets (Details) Details 97 false false R98.htm 092410 - Disclosure - Subsequent Events, Warrant Exercises (Details) Sheet http://sanuwave.com/role/SubsequentEventsWarrantExercisesDetails Subsequent Events, Warrant Exercises (Details) Details 98 false false R99.htm 092412 - Disclosure - Subsequent Events, Second Amendment to Note and Warrant Purchase and Security Agreement (Details) Sheet http://sanuwave.com/role/SubsequentEventsSecondAmendmentToNoteAndWarrantPurchaseAndSecurityAgreementDetails Subsequent Events, Second Amendment to Note and Warrant Purchase and Security Agreement (Details) Details 99 false false All Reports Book All Reports brhc10036577_10k.htm brhc10036577_ex10-55.htm brhc10036577_ex10-56.htm brhc10036577_ex10-57.htm brhc10036577_ex21-1.htm brhc10036577_ex23-1.htm brhc10036577_ex31-1.htm brhc10036577_ex31-2.htm brhc10036577_ex32-1.htm brhc10036577_ex32-2.htm snwv-20211231.xsd snwv-20211231_cal.xml snwv-20211231_def.xml snwv-20211231_lab.xml snwv-20211231_pre.xml http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true