3.20.1 html 402 561 1 false 87 0 false 8 false false R1.htm 0001000 - Document - Cover Sheet http://www.inwk.com/role/Cover Cover Cover 1 false false R2.htm 1001000 - Statement - Consolidated Statements of Operations Sheet http://www.inwk.com/role/ConsolidatedStatementsOfOperations Consolidated Statements of Operations Statements 2 false false R3.htm 1002000 - Statement - Consolidated Statements of Comprehensive Income (Loss) Sheet http://www.inwk.com/role/ConsolidatedStatementsOfComprehensiveIncomeLoss Consolidated Statements of Comprehensive Income (Loss) Statements 3 false false R4.htm 1003000 - Statement - Consolidated Balance Sheets Sheet http://www.inwk.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 4 false false R5.htm 1003501 - Statement - Consolidated Balance Sheets [Parenthetical] Sheet http://www.inwk.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets [Parenthetical] Statements 5 false false R6.htm 1004000 - Statement - Consolidated Statements of Stockholders' Equity Sheet http://www.inwk.com/role/ConsolidatedStatementsOfStockholdersEquity Consolidated Statements of Stockholders' Equity Statements 6 false false R7.htm 1005000 - Statement - Consolidated Statements of Cash Flows Sheet http://www.inwk.com/role/ConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 2101100 - Disclosure - Description of the Business Sheet http://www.inwk.com/role/DescriptionOfBusiness Description of the Business Notes 8 false false R9.htm 2103100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 2105100 - Disclosure - Leases Sheet http://www.inwk.com/role/Leases Leases Notes 10 false false R11.htm 2107100 - Disclosure - Revenue Recognition Sheet http://www.inwk.com/role/RevenueRecognition Revenue Recognition Notes 11 false false R12.htm 2109100 - Disclosure - Goodwill Sheet http://www.inwk.com/role/Goodwill Goodwill Notes 12 false false R13.htm 2111100 - Disclosure - Other Intangible Assets Sheet http://www.inwk.com/role/OtherIntangibleAssets Other Intangible Assets Notes 13 false false R14.htm 2113100 - Disclosure - Restructuring Activities and Charges Sheet http://www.inwk.com/role/RestructuringActivitiesAndCharges Restructuring Activities and Charges Notes 14 false false R15.htm 2115100 - Disclosure - Property and Equipment Sheet http://www.inwk.com/role/PropertyAndEquipment Property and Equipment Notes 15 false false R16.htm 2117100 - Disclosure - Revolving Credit Facilities Sheet http://www.inwk.com/role/RevolvingCreditFacilities Revolving Credit Facilities Notes 16 false false R17.htm 2119100 - Disclosure - Long-Term Debt Sheet http://www.inwk.com/role/LongTermDebt Long-Term Debt Notes 17 false false R18.htm 2121100 - Disclosure - Commitments and Contingencies Sheet http://www.inwk.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 18 false false R19.htm 2123100 - Disclosure - Income Taxes Sheet http://www.inwk.com/role/IncomeTaxes Income Taxes Notes 19 false false R20.htm 2125100 - Disclosure - Fair Value Measurement Sheet http://www.inwk.com/role/FairValueMeasurement Fair Value Measurement Notes 20 false false R21.htm 2127100 - Disclosure - (Loss) Earnings Per Share Sheet http://www.inwk.com/role/LossEarningsPerShare (Loss) Earnings Per Share Notes 21 false false R22.htm 2129100 - Disclosure - Share Repurchase Program Sheet http://www.inwk.com/role/ShareRepurchaseProgram Share Repurchase Program Notes 22 false false R23.htm 2131100 - Disclosure - Stock-Based Compensation Plan Sheet http://www.inwk.com/role/StockBasedCompensationPlan Stock-Based Compensation Plan Notes 23 false false R24.htm 2133100 - Disclosure - Benefit Plans Sheet http://www.inwk.com/role/BenefitPlans Benefit Plans Notes 24 false false R25.htm 2135100 - Disclosure - Related Party Transactions Sheet http://www.inwk.com/role/RelatedPartyTransactions Related Party Transactions Notes 25 false false R26.htm 2137100 - Disclosure - Business Segments Sheet http://www.inwk.com/role/BusinessSegments Business Segments Notes 26 false false R27.htm 2139100 - Disclosure - Quarterly Selected Financial Information (Unaudited) Sheet http://www.inwk.com/role/QuarterlySelectedFinancialInformationUnaudited Quarterly Selected Financial Information (Unaudited) Notes 27 false false R28.htm 2140100 - Disclosure - Revision of Prior Period Financial Statements Sheet http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatements Revision of Prior Period Financial Statements Notes 28 false false R29.htm 2203201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.inwk.com/role/SummaryOfSignificantAccountingPolicies 29 false false R30.htm 2303302 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.inwk.com/role/SummaryOfSignificantAccountingPolicies 30 false false R31.htm 2305301 - Disclosure - Leases (Tables) Sheet http://www.inwk.com/role/LeasesTables Leases (Tables) Tables http://www.inwk.com/role/Leases 31 false false R32.htm 2307301 - Disclosure - Revenue Recognition (Tables) Sheet http://www.inwk.com/role/RevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.inwk.com/role/RevenueRecognition 32 false false R33.htm 2309301 - Disclosure - Goodwill (Tables) Sheet http://www.inwk.com/role/GoodwillTables Goodwill (Tables) Tables http://www.inwk.com/role/Goodwill 33 false false R34.htm 2311301 - Disclosure - Other Intangible Assets (Tables) Sheet http://www.inwk.com/role/OtherIntangibleAssetsTables Other Intangible Assets (Tables) Tables http://www.inwk.com/role/OtherIntangibleAssets 34 false false R35.htm 2313301 - Disclosure - Restructuring Activities and Charges (Tables) Sheet http://www.inwk.com/role/RestructuringActivitiesAndChargesTables Restructuring Activities and Charges (Tables) Tables http://www.inwk.com/role/RestructuringActivitiesAndCharges 35 false false R36.htm 2315301 - Disclosure - Property and Equipment (Tables) Sheet http://www.inwk.com/role/PropertyAndEquipmentTables Property and Equipment (Tables) Tables http://www.inwk.com/role/PropertyAndEquipment 36 false false R37.htm 2317301 - Disclosure - Revolving Credit Facilities (Tables) Sheet http://www.inwk.com/role/RevolvingCreditFacilitiesTables Revolving Credit Facilities (Tables) Tables http://www.inwk.com/role/RevolvingCreditFacilities 37 false false R38.htm 2319301 - Disclosure - Long-Term Debt (Tables) Sheet http://www.inwk.com/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://www.inwk.com/role/LongTermDebt 38 false false R39.htm 2323301 - Disclosure - Income Taxes (Tables) Sheet http://www.inwk.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.inwk.com/role/IncomeTaxes 39 false false R40.htm 2325301 - Disclosure - Fair Value Measurement (Tables) Sheet http://www.inwk.com/role/FairValueMeasurementTables Fair Value Measurement (Tables) Tables http://www.inwk.com/role/FairValueMeasurement 40 false false R41.htm 2327301 - Disclosure - (Loss) Earnings Per Share (Tables) Sheet http://www.inwk.com/role/LossEarningsPerShareTables (Loss) Earnings Per Share (Tables) Tables http://www.inwk.com/role/LossEarningsPerShare 41 false false R42.htm 2331301 - Disclosure - Stock-Based Compensation Plan (Tables) Sheet http://www.inwk.com/role/StockBasedCompensationPlanTables Stock-Based Compensation Plan (Tables) Tables http://www.inwk.com/role/StockBasedCompensationPlan 42 false false R43.htm 2337301 - Disclosure - Business Segments (Tables) Sheet http://www.inwk.com/role/BusinessSegmentsTables Business Segments (Tables) Tables http://www.inwk.com/role/BusinessSegments 43 false false R44.htm 2339301 - Disclosure - Quarterly Selected Financial Information (Unaudited) (Tables) Sheet http://www.inwk.com/role/QuarterlySelectedFinancialInformationUnauditedTables Quarterly Selected Financial Information (Unaudited) (Tables) Tables http://www.inwk.com/role/QuarterlySelectedFinancialInformationUnaudited 44 false false R45.htm 2340301 - Disclosure - Revision of Prior Period Financial Statements (Tables) Sheet http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatementsTables Revision of Prior Period Financial Statements (Tables) Tables http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatements 45 false false R46.htm 2403403 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 46 false false R47.htm 2403404 - Disclosure - Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details) Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPoliciesScheduleOfAllowanceForDoubtfulAccountsDetails Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details) Details 47 false false R48.htm 2403406 - Disclosure - Summary of Significant Accounting Policies - Summary of Property and Equipment (Details) Sheet http://www.inwk.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfPropertyAndEquipmentDetails Summary of Significant Accounting Policies - Summary of Property and Equipment (Details) Details 48 false false R49.htm 2405402 - Disclosure - Leases - Narrative (Details) Sheet http://www.inwk.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 49 false false R50.htm 2405403 - Disclosure - Leases - Supplemental Balance Sheet Information (Details) Sheet http://www.inwk.com/role/LeasesSupplementalBalanceSheetInformationDetails Leases - Supplemental Balance Sheet Information (Details) Details 50 false false R51.htm 2405404 - Disclosure - Leases - Components of Lease Cost (Details) Sheet http://www.inwk.com/role/LeasesComponentsOfLeaseCostDetails Leases - Components of Lease Cost (Details) Details 51 false false R52.htm 2405405 - Disclosure - Leases - Average Lease Terms and Discount Rates (Details) Sheet http://www.inwk.com/role/LeasesAverageLeaseTermsAndDiscountRatesDetails Leases - Average Lease Terms and Discount Rates (Details) Details 52 false false R53.htm 2405406 - Disclosure - Leases - Supplemental Cash Flow Information (Details) Sheet http://www.inwk.com/role/LeasesSupplementalCashFlowInformationDetails Leases - Supplemental Cash Flow Information (Details) Details 53 false false R54.htm 2405407 - Disclosure - Leases - Aggregate Future Lease Payments (Details) Sheet http://www.inwk.com/role/LeasesAggregateFutureLeasePaymentsDetails Leases - Aggregate Future Lease Payments (Details) Details 54 false false R55.htm 2407402 - Disclosure - Revenue Recognition (Details) Sheet http://www.inwk.com/role/RevenueRecognitionDetails Revenue Recognition (Details) Details http://www.inwk.com/role/RevenueRecognitionTables 55 false false R56.htm 2409402 - Disclosure - Goodwill - Schedule of Goodwill (Details) Sheet http://www.inwk.com/role/GoodwillScheduleOfGoodwillDetails Goodwill - Schedule of Goodwill (Details) Details 56 false false R57.htm 2409403 - Disclosure - Goodwill - Narrative (Details) Sheet http://www.inwk.com/role/GoodwillNarrativeDetails Goodwill - Narrative (Details) Details 57 false false R58.htm 2411402 - Disclosure - Other Intangible Assets - Schedule of Intangible Assets (Details) Sheet http://www.inwk.com/role/OtherIntangibleAssetsScheduleOfIntangibleAssetsDetails Other Intangible Assets - Schedule of Intangible Assets (Details) Details 58 false false R59.htm 2411403 - Disclosure - Other Intangible Assets - Narrative (Details) Sheet http://www.inwk.com/role/OtherIntangibleAssetsNarrativeDetails Other Intangible Assets - Narrative (Details) Details 59 false false R60.htm 2411404 - Disclosure - Other Intangible Assets - Schedule of Future Amortization Expense (Details) Sheet http://www.inwk.com/role/OtherIntangibleAssetsScheduleOfFutureAmortizationExpenseDetails Other Intangible Assets - Schedule of Future Amortization Expense (Details) Details 60 false false R61.htm 2413402 - Disclosure - Restructuring Activities and Charges - Narrative (Details) Sheet http://www.inwk.com/role/RestructuringActivitiesAndChargesNarrativeDetails Restructuring Activities and Charges - Narrative (Details) Details 61 false false R62.htm 2413403 - Disclosure - Restructuring Activities and Charges - Schedule of Restructuring Charges (Details) Sheet http://www.inwk.com/role/RestructuringActivitiesAndChargesScheduleOfRestructuringChargesDetails Restructuring Activities and Charges - Schedule of Restructuring Charges (Details) Details 62 false false R63.htm 2413404 - Disclosure - Restructuring Activities and Charges - Schedule of Restructuring Costs by Segment (Details) Sheet http://www.inwk.com/role/RestructuringActivitiesAndChargesScheduleOfRestructuringCostsBySegmentDetails Restructuring Activities and Charges - Schedule of Restructuring Costs by Segment (Details) Details 63 false false R64.htm 2415402 - Disclosure - Property and Equipment - Schedule of Property and Equipment (Details) Sheet http://www.inwk.com/role/PropertyAndEquipmentScheduleOfPropertyAndEquipmentDetails Property and Equipment - Schedule of Property and Equipment (Details) Details 64 false false R65.htm 2415403 - Disclosure - Property and Equipment - Narrative (Details) Sheet http://www.inwk.com/role/PropertyAndEquipmentNarrativeDetails Property and Equipment - Narrative (Details) Details 65 false false R66.htm 2417402 - Disclosure - Revolving Credit Facilities - Narrative (Details) Sheet http://www.inwk.com/role/RevolvingCreditFacilitiesNarrativeDetails Revolving Credit Facilities - Narrative (Details) Details 66 false false R67.htm 2417403 - Disclosure - Revolving Credit Facilities - Change in Fair Value of ABL Embedded Derivative (Details) Sheet http://www.inwk.com/role/RevolvingCreditFacilitiesChangeInFairValueOfAblEmbeddedDerivativeDetails Revolving Credit Facilities - Change in Fair Value of ABL Embedded Derivative (Details) Details 67 false false R68.htm 2417404 - Disclosure - Revolving Credit Facilities - Summary of ABL Credit Facility (Details) Sheet http://www.inwk.com/role/RevolvingCreditFacilitiesSummaryOfAblCreditFacilityDetails Revolving Credit Facilities - Summary of ABL Credit Facility (Details) Details 68 false false R69.htm 2419402 - Disclosure - Long-Term Debt - Narrative (Details) Sheet http://www.inwk.com/role/LongTermDebtNarrativeDetails Long-Term Debt - Narrative (Details) Details 69 false false R70.htm 2419403 - Disclosure - Long-Term Debt - Change in Fair Value of Term Loan Embedded Derivative (Details) Sheet http://www.inwk.com/role/LongTermDebtChangeInFairValueOfTermLoanEmbeddedDerivativeDetails Long-Term Debt - Change in Fair Value of Term Loan Embedded Derivative (Details) Details 70 false false R71.htm 2419404 - Disclosure - Long-Term Debt - Change in Fair Value of Initial Warrant (Details) Sheet http://www.inwk.com/role/LongTermDebtChangeInFairValueOfInitialWarrantDetails Long-Term Debt - Change in Fair Value of Initial Warrant (Details) Details 71 false false R72.htm 2419405 - Disclosure - Long-Term Debt - Summary of Term Loan Credit Facility (Details) Sheet http://www.inwk.com/role/LongTermDebtSummaryOfTermLoanCreditFacilityDetails Long-Term Debt - Summary of Term Loan Credit Facility (Details) Details 72 false false R73.htm 2421403 - Disclosure - Commitments and Contingencies - Narrative (Details) Sheet http://www.inwk.com/role/CommitmentsAndContingenciesNarrativeDetails Commitments and Contingencies - Narrative (Details) Details 73 false false R74.htm 2423402 - Disclosure - Income Taxes - Components of Income Taxes (Details) Sheet http://www.inwk.com/role/IncomeTaxesComponentsOfIncomeTaxesDetails Income Taxes - Components of Income Taxes (Details) Details 74 false false R75.htm 2423403 - Disclosure - Income Taxes - Effective Income Tax Reconciliation (Details) Sheet http://www.inwk.com/role/IncomeTaxesEffectiveIncomeTaxReconciliationDetails Income Taxes - Effective Income Tax Reconciliation (Details) Details 75 false false R76.htm 2423404 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) Sheet http://www.inwk.com/role/IncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails Income Taxes - Deferred Tax Assets and Liabilities (Details) Details 76 false false R77.htm 2423405 - Disclosure - Income Taxes - Narrative (Details) Sheet http://www.inwk.com/role/IncomeTaxesNarrativeDetails Income Taxes - Narrative (Details) Details 77 false false R78.htm 2423406 - Disclosure - Income Taxes - Uncertain Tax Positions (Details) Sheet http://www.inwk.com/role/IncomeTaxesUncertainTaxPositionsDetails Income Taxes - Uncertain Tax Positions (Details) Details 78 false false R79.htm 2425402 - Disclosure - Fair Value Measurement - Schedule of Fair Value Assumptions (Details) Sheet http://www.inwk.com/role/FairValueMeasurementScheduleOfFairValueAssumptionsDetails Fair Value Measurement - Schedule of Fair Value Assumptions (Details) Details 79 false false R80.htm 2425403 - Disclosure - Fair Value Measurement - Schedule of Fair Value Measurements (Details) Sheet http://www.inwk.com/role/FairValueMeasurementScheduleOfFairValueMeasurementsDetails Fair Value Measurement - Schedule of Fair Value Measurements (Details) Details 80 false false R81.htm 2427402 - Disclosure - (Loss) Earnings Per Share - Narrative (Details) Sheet http://www.inwk.com/role/LossEarningsPerShareNarrativeDetails (Loss) Earnings Per Share - Narrative (Details) Details 81 false false R82.htm 2427403 - Disclosure - (Loss) Earnings Per Share - Schedule of Earnings Per Share (Details) Sheet http://www.inwk.com/role/LossEarningsPerShareScheduleOfEarningsPerShareDetails (Loss) Earnings Per Share - Schedule of Earnings Per Share (Details) Details 82 false false R83.htm 2429401 - Disclosure - Share Repurchase Program (Details) Sheet http://www.inwk.com/role/ShareRepurchaseProgramDetails Share Repurchase Program (Details) Details http://www.inwk.com/role/ShareRepurchaseProgram 83 false false R84.htm 2431402 - Disclosure - Stock-Based Compensation Plan - Narrative (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanNarrativeDetails Stock-Based Compensation Plan - Narrative (Details) Details 84 false false R85.htm 2431403 - Disclosure - Stock-Based Compensation Plan - Stock Option Activity (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanStockOptionActivityDetails Stock-Based Compensation Plan - Stock Option Activity (Details) Details 85 false false R86.htm 2431404 - Disclosure - Stock-Based Compensation Plan - Option Assumptions (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanOptionAssumptionsDetails Stock-Based Compensation Plan - Option Assumptions (Details) Details 86 false false R87.htm 2431405 - Disclosure - Stock-Based Compensation Plan - SAR Activity (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanSarActivityDetails Stock-Based Compensation Plan - SAR Activity (Details) Details 87 false false R88.htm 2431407 - Disclosure - Stock-Based Compensation Plan - Restricted Share Activity (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanRestrictedShareActivityDetails Stock-Based Compensation Plan - Restricted Share Activity (Details) Details 88 false false R89.htm 2431408 - Disclosure - Stock-Based Compensation Plan - Restricted Share Unit Activity (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanRestrictedShareUnitActivityDetails Stock-Based Compensation Plan - Restricted Share Unit Activity (Details) Details 89 false false R90.htm 2431409 - Disclosure - Stock-Based Compensation Plan - Performance Share Unit Activity (Details) Sheet http://www.inwk.com/role/StockBasedCompensationPlanPerformanceShareUnitActivityDetails Stock-Based Compensation Plan - Performance Share Unit Activity (Details) Details 90 false false R91.htm 2433401 - Disclosure - Benefit Plans (Details) Sheet http://www.inwk.com/role/BenefitPlansDetails Benefit Plans (Details) Details http://www.inwk.com/role/BenefitPlans 91 false false R92.htm 2435401 - Disclosure - Related Party Transactions (Details) Sheet http://www.inwk.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.inwk.com/role/RelatedPartyTransactions 92 false false R93.htm 2437402 - Disclosure - Business Segments - Narrative (Details) Sheet http://www.inwk.com/role/BusinessSegmentsNarrativeDetails Business Segments - Narrative (Details) Details 93 false false R94.htm 2437403 - Disclosure - Business Segments - Revenue by Segment (Details) Sheet http://www.inwk.com/role/BusinessSegmentsRevenueBySegmentDetails Business Segments - Revenue by Segment (Details) Details 94 false false R95.htm 2437404 - Disclosure - Business Segments - EBITDA and Adjusted EBITDA (Details) Sheet http://www.inwk.com/role/BusinessSegmentsEbitdaAndAdjustedEbitdaDetails Business Segments - EBITDA and Adjusted EBITDA (Details) Details 95 false false R96.htm 2437405 - Disclosure - Business Segments - Assets by Segment (Details) Sheet http://www.inwk.com/role/BusinessSegmentsAssetsBySegmentDetails Business Segments - Assets by Segment (Details) Details 96 false false R97.htm 2437406 - Disclosure - Business Segments - Long-lived Assets by Segment (Details) Sheet http://www.inwk.com/role/BusinessSegmentsLongLivedAssetsBySegmentDetails Business Segments - Long-lived Assets by Segment (Details) Details 97 false false R98.htm 2439402 - Disclosure - Quarterly Selected Financial Information (Unaudited) (Details) Sheet http://www.inwk.com/role/QuarterlySelectedFinancialInformationUnauditedDetails Quarterly Selected Financial Information (Unaudited) (Details) Details http://www.inwk.com/role/QuarterlySelectedFinancialInformationUnauditedTables 98 false false R99.htm 2440402 - Disclosure - Revision of Prior Period Financial Statements - Revised Consolidated Statements of Income Amounts (Details) Sheet http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatementsRevisedConsolidatedStatementsOfIncomeAmountsDetails Revision of Prior Period Financial Statements - Revised Consolidated Statements of Income Amounts (Details) Details 99 false false R100.htm 2440403 - Disclosure - Revision of Prior Period Financial Statements - Revised Consolidated Balance Sheet Amounts (Details) Sheet http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatementsRevisedConsolidatedBalanceSheetAmountsDetails Revision of Prior Period Financial Statements - Revised Consolidated Balance Sheet Amounts (Details) Details 100 false false R101.htm 2440404 - Disclosure - Revision of Prior Period Financial Statements - Revised Consolidated Statements of Cash Flows Amounts (Details) Sheet http://www.inwk.com/role/RevisionOfPriorPeriodFinancialStatementsRevisedConsolidatedStatementsOfCashFlowsAmountsDetails Revision of Prior Period Financial Statements - Revised Consolidated Statements of Cash Flows Amounts (Details) Details 101 false false R9999.htm Uncategorized Items - inwk201910-k.htm Sheet http://xbrl.sec.gov/role/uncategorizedFacts Uncategorized Items - inwk201910-k.htm Cover 102 false false All Reports Book All Reports inwk201910-k.htm inwk-20191231.xsd inwk-20191231_cal.xml inwk-20191231_def.xml inwk-20191231_lab.xml inwk-20191231_pre.xml inwk201910-kex1027.htm inwk201910-kex211subsi.htm inwk201910-kex231audit.htm inwk201910-kex311302ce.htm inwk201910-kex312302ce.htm inwk201910-kex321906ce.htm inwk201910-kex43.htm chart-052311296d295911b96.jpg http://fasb.org/srt/2019-01-31 http://xbrl.sec.gov/dei/2019-01-31 http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/country/2017-01-31 true true