2.4.1.9 Html 278 308 1 true 102 0 false 8 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.actua.com/20150331/taxonomy/role/DocumentDocumentAndEntityInformation Document and Entity Information true false R2.htm 100010 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.actua.com/20150331/taxonomy/role/StatementCONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS false false R3.htm 100020 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.actua.com/20150331/taxonomy/role/StatementCONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) false false R4.htm 100030 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Sheet http://www.actua.com/20150331/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOMELOSS CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) false false R5.htm 100050 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.actua.com/20150331/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY false false R6.htm 100060 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.actua.com/20150331/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS false false R7.htm 100070 - Disclosure - The Company Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureTheCompany The Company false false R8.htm 100080 - Disclosure - Significant Accounting Policies Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSignificantAccountingPolicies Significant Accounting Policies false false R9.htm 100090 - Disclosure - Goodwill and Intangible Assets Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureGoodwillAndIntangibleAssets Goodwill and Intangible Assets false false R10.htm 100100 - Disclosure - Consolidated Businesses Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureConsolidatedBusinesses Consolidated Businesses false false R11.htm 100110 - Disclosure - Equity and Cost Method Businesses Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityAndCostMethodBusinesses Equity and Cost Method Businesses false false R12.htm 100120 - Disclosure - Fair Value Measurements Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureFairValueMeasurements Fair Value Measurements false false R13.htm 100130 - Disclosure - Debt Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureDebt Debt false false R14.htm 100140 - Disclosure - Treasury Stock Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureTreasuryStock Treasury Stock false false R15.htm 100150 - Disclosure - Equity-Based Compensation Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityBasedCompensation Equity-Based Compensation false false R16.htm 100160 - Disclosure - Other Income (Loss) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureOtherIncomeLoss Other Income (Loss) false false R17.htm 100170 - Disclosure - Income Taxes Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureIncomeTaxes Income Taxes false false R18.htm 100180 - Disclosure - Net Income (Loss) per Share Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureNetIncomeLossPerShare Net Income (Loss) per Share false false R19.htm 100190 - Disclosure - Segment Information Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSegmentInformation Segment Information false false R20.htm 100200 - Disclosure - Contingencies Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureContingencies Contingencies false false R21.htm 100210 - Disclosure - Significant Accounting Policies (Policies) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) false false R22.htm 100220 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsTables Goodwill and Intangible Assets (Tables) false false R23.htm 100230 - Disclosure - Consolidated Businesses (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureConsolidatedBusinessesTables Consolidated Businesses (Tables) false false R24.htm 100240 - Disclosure - Equity and Cost Method Businesses (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityAndCostMethodBusinessesTables Equity and Cost Method Businesses (Tables) false false R25.htm 100250 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) false false R26.htm 100260 - Disclosure - Equity-Based Compensation (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityBasedCompensationTables Equity-Based Compensation (Tables) false false R27.htm 100270 - Disclosure - Net Income (Loss) per Share (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureNetIncomeLossPerShareTables Net Income (Loss) per Share (Tables) false false R28.htm 100280 - Disclosure - Segment Information (Tables) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSegmentInformationTables Segment Information (Tables) false false R29.htm 100290 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSignificantAccountingPoliciesAdditionalInformationDetail Significant Accounting Policies - Additional Information (Detail) false false R30.htm 100300 - Disclosure - Summary of Activity Related to Goodwill (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfActivityRelatedToGoodwillDetail Summary of Activity Related to Goodwill (Detail) false false R31.htm 100310 - Disclosure - Summary of Intangible Assets from Continuing Operations (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfIntangibleAssetsFromContinuingOperationsDetail Summary of Intangible Assets from Continuing Operations (Detail) false false R32.htm 100320 - Disclosure - Summary of Intangible Assets from Continuing Operations (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfIntangibleAssetsFromContinuingOperationsParentheticalDetail Summary of Intangible Assets from Continuing Operations (Parenthetical) (Detail) false false R33.htm 100330 - Disclosure - Goodwill and Intangible Assets - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureGoodwillAndIntangibleAssetsAdditionalInformationDetail Goodwill and Intangible Assets - Additional Information (Detail) false false R34.htm 100340 - Disclosure - Remaining Estimated Amortization Expense (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureRemainingEstimatedAmortizationExpenseDetail Remaining Estimated Amortization Expense (Detail) false false R35.htm 100350 - Disclosure - Consolidated Businesses - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureConsolidatedBusinessesAdditionalInformationDetail Consolidated Businesses - Additional Information (Detail) false false R36.htm 100360 - Disclosure - Preliminary Allocation of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosurePreliminaryAllocationOfConsiderationPaidAndEstimatedFairValueOfAssetsAcquiredAndLiabilitiesAssumedDetail Preliminary Allocation of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) false false R37.htm 100370 - Disclosure - Preliminary Allocation of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosurePreliminaryAllocationOfConsiderationPaidAndEstimatedFairValueOfAssetsAcquiredAndLiabilitiesAssumedParentheticalDetail Preliminary Allocation of Consideration Paid and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) false false R38.htm 100380 - Disclosure - Allocations of Purchase Price to Identified Intangible Assets and Tangible Assets and Liabilities (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureAllocationsOfPurchasePriceToIdentifiedIntangibleAssetsAndTangibleAssetsAndLiabilitiesDetail Allocations of Purchase Price to Identified Intangible Assets and Tangible Assets and Liabilities (Detail) false false R39.htm 100390 - Disclosure - Allocations of Purchase Price to Identified Intangible Assets and Tangible Assets and Liabilities (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureAllocationsOfPurchasePriceToIdentifiedIntangibleAssetsAndTangibleAssetsAndLiabilitiesParentheticalDetail Allocations of Purchase Price to Identified Intangible Assets and Tangible Assets and Liabilities (Parenthetical) (Detail) false false R40.htm 100400 - Disclosure - Reconciliation of Activity Related to Redeemable Noncontrolling Interest (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureReconciliationOfActivityRelatedToRedeemableNoncontrollingInterestDetail Reconciliation of Activity Related to Redeemable Noncontrolling Interest (Detail) false false R41.htm 100410 - Disclosure - Pro Forma Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureProFormaInformationDetail Pro Forma Information (Detail) false false R42.htm 100420 - Disclosure - Equity and Cost Method Businesses - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityAndCostMethodBusinessesAdditionalInformationDetail Equity and Cost Method Businesses - Additional Information (Detail) false false R43.htm 100430 - Disclosure - Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummarizedFinancialInformationRelatedToCompaniesAccountedForUnderEquityMethodOfAccountingDetail Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) false false R44.htm 100440 - Disclosure - Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummarizedFinancialInformationRelatedToCompaniesAccountedForUnderEquityMethodOfAccountingParentheticalDetail Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Parenthetical) (Detail) false false R45.htm 100450 - Disclosure - Results of Operations (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureResultsOfOperationsDetail Results of Operations (Detail) false false R46.htm 100460 - Disclosure - Fair Value Hierarchy of Financial Assets Measured at Fair Value on Recurring Basis (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureFairValueHierarchyOfFinancialAssetsMeasuredAtFairValueOnRecurringBasisDetail Fair Value Hierarchy of Financial Assets Measured at Fair Value on Recurring Basis (Detail) false false R47.htm 100470 - Disclosure - Fair Value Measurements - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformationDetail Fair Value Measurements - Additional Information (Detail) false false R48.htm 100480 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureDebtAdditionalInformationDetail Debt - Additional Information (Detail) false false R49.htm 100490 - Disclosure - Treasury Stock - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureTreasuryStockAdditionalInformationDetail Treasury Stock - Additional Information (Detail) false false R50.htm 100500 - Disclosure - Equity-Based Compensation - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureEquityBasedCompensationAdditionalInformationDetail Equity-Based Compensation - Additional Information (Detail) false false R51.htm 100510 - Disclosure - Summary of Equity-Based Compensation (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfEquityBasedCompensationDetail Summary of Equity-Based Compensation (Detail) false false R52.htm 100520 - Disclosure - Changes in Restricted Stock (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureChangesInRestrictedStockDetail Changes in Restricted Stock (Detail) false false R53.htm 100530 - Disclosure - Issued And Unvested Shares Of Restricted Stock Granted (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureIssuedAndUnvestedSharesOfRestrictedStockGrantedDetail Issued And Unvested Shares Of Restricted Stock Granted (Detail) false false R54.htm 100540 - Disclosure - Changes in Stock Appreciation Rights (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureChangesInStockAppreciationRightsDetail Changes in Stock Appreciation Rights (Detail) false false R55.htm 100550 - Disclosure - Changes in Stock Appreciation Rights (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureChangesInStockAppreciationRightsParentheticalDetail Changes in Stock Appreciation Rights (Parenthetical) (Detail) false false R56.htm 100560 - Disclosure - Assumptions Used to Determine Fair Value of Stock Appreciation Rights Granted to Employees (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureAssumptionsUsedToDetermineFairValueOfStockAppreciationRightsGrantedToEmployeesDetail Assumptions Used to Determine Fair Value of Stock Appreciation Rights Granted to Employees (Detail) false false R57.htm 100570 - Disclosure - Other Income (Loss) - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureOtherIncomeLossAdditionalInformationDetail Other Income (Loss) - Additional Information (Detail) false false R58.htm 100580 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) false false R59.htm 100590 - Disclosure - Calculations of Net Income (Loss) Per Share (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureCalculationsOfNetIncomeLossPerShareDetail Calculations of Net Income (Loss) Per Share (Detail) false false R60.htm 100600 - Disclosure - Potentially Dilutive Securities Not Included in Computation of Diluted Net Loss Per Share (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosurePotentiallyDilutiveSecuritiesNotIncludedInComputationOfDilutedNetLossPerShareDetail Potentially Dilutive Securities Not Included in Computation of Diluted Net Loss Per Share (Detail) false false R61.htm 100610 - Disclosure - Segment Information - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSegmentInformationAdditionalInformationDetail Segment Information - Additional Information (Detail) false false R62.htm 100620 - Disclosure - Summary of Selected Information Related to Segments (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfSelectedInformationRelatedToSegmentsDetail Summary of Selected Information Related to Segments (Detail) false false R63.htm 100630 - Disclosure - Summary of Selected Information Related to Segments (Parenthetical) (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureSummaryOfSelectedInformationRelatedToSegmentsParentheticalDetail Summary of Selected Information Related to Segments (Parenthetical) (Detail) false false R64.htm 100640 - Disclosure - Contingencies - Additional Information (Detail) Sheet http://www.actua.com/20150331/taxonomy/role/DisclosureContingenciesAdditionalInformationDetail Contingencies - Additional Information (Detail) false false All Reports Book All Reports Element us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet had a mix of decimals attribute values: -5 -3. Element us-gaap_CostMethodInvestments had a mix of decimals attribute values: -5 0. Element us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax had a mix of decimals attribute values: -5 -3. Element us-gaap_InvestmentOwnedBalancePrincipalAmount had a mix of decimals attribute values: -6 -5. Element us-gaap_LongTermDebtCurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_LongTermDebtNoncurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_PaymentsToAcquireBusinessesGross had a mix of decimals attribute values: -5 -3. Element us-gaap_Revenues had a mix of decimals attribute values: -5 -3. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 89 days and at least 33 values. Shorter duration columns must have at least one fourth (8) as many values. Column '12/31/2014' is shorter (-735597 days) and has only 1 values, so it is being removed. 'Monetary' elements on report '100350 - Disclosure - Consolidated Businesses - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '100480 - Disclosure - Debt - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '100500 - Disclosure - Equity-Based Compensation - Additional Information (Detail)' had a mix of different decimal attribute values. Process Flow-Through: 100010 - Statement - CONSOLIDATED BALANCE SHEETS Process Flow-Through: Removing column 'Mar. 31, 2014' Process Flow-Through: Removing column 'Dec. 31, 2013' Process Flow-Through: 100020 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Process Flow-Through: 100030 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Process Flow-Through: 100060 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS acta-20150331.xml acta-20150331.xsd acta-20150331_cal.xml acta-20150331_def.xml acta-20150331_lab.xml acta-20150331_pre.xml true true