2.4.0.6 Html 460 570 1 true 145 0 false 8 false false R1.htm 101 - Document - Document and Entity Information Sheet http://www.icg.com/taxonomy/role/DocumentDocumentandEntityInformation Document and Entity Information true false R2.htm 103 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.icg.com/taxonomy/role/StatementOfFinancialPositionClassified CONSOLIDATED BALANCE SHEETS false false R3.htm 104 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.icg.com/taxonomy/role/StatementOfFinancialPositionClassifiedParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) false false R4.htm 105 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Sheet http://www.icg.com/taxonomy/role/StatementOfIncomeAlternative CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) false false R5.htm 106 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.icg.com/taxonomy/role/StatementOfShareholdersEquityAndOtherComprehensiveIncome CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY false false R6.htm 107 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.icg.com/taxonomy/role/StatementOfCashFlowsIndirect CONSOLIDATED STATEMENTS OF CASH FLOWS false false R7.htm 108 - Disclosure - The Company Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock The Company false false R8.htm 109 - Disclosure - Significant Accounting Policies Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlock Significant Accounting Policies false false R9.htm 110 - Disclosure - Goodwill and Intangibles, net Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlock Goodwill and Intangibles, net false false R10.htm 111 - Disclosure - Consolidated Core Companies Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlock Consolidated Core Companies false false R11.htm 112 - Disclosure - Ownership Interests and Cost Method Companies Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsCostAndEquityMethodInvestmentsDisclosureTextBlock Ownership Interests and Cost Method Companies false false R12.htm 113 - Disclosure - Financial Instruments Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlock Financial Instruments false false R13.htm 114 - Disclosure - Fixed Assets Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsPropertyPlantAndEquipmentDisclosureTextBlock Fixed Assets false false R14.htm 115 - Disclosure - Debt Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock Debt false false R15.htm 116 - Disclosure - Segment Information Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock Segment Information false false R16.htm 117 - Disclosure - ICG Group, Inc.'s Stockholders' Equity Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityDisclosureTextBlock ICG Group, Inc.'s Stockholders' Equity false false R17.htm 118 - Disclosure - Equity-Based Compensation Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock Equity-Based Compensation false false R18.htm 119 - Disclosure - Commitments and Contingencies Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock Commitments and Contingencies false false R19.htm 120 - Disclosure - Other Income (Loss) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsOtherIncomeAndOtherExpenseDisclosureTextBlock Other Income (Loss) false false R20.htm 121 - Disclosure - Income Taxes Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock Income Taxes false false R21.htm 122 - Disclosure - Net Income (Loss) per Share Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock Net Income (Loss) per Share false false R22.htm 123 - Disclosure - Redeemable Noncontrolling Interest Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsMinorityInterestDisclosureTextBlock Redeemable Noncontrolling Interest false false R23.htm 124 - Disclosure - Related Parties Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsRelatedPartyTransactionsDisclosureTextBlock Related Parties false false R24.htm 125 - Disclosure - Separate Financial Statements of Subsidiary not Consolidated Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSeparateFinancialStatementsOfSubsidiaryNotConsolidated Separate Financial Statements of Subsidiary not Consolidated false false R25.htm 126 - Disclosure - Selected Quarterly Financial Information (Unaudited) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsScheduleOfSelectedQuarterlyFiscalDataTextBlock Selected Quarterly Financial Information (Unaudited) false false R26.htm 127 - Disclosure - Schedule II - Valuation and Qualifying Accounts Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock Schedule II - Valuation and Qualifying Accounts false false R27.htm 128 - Disclosure - Significant Accounting Policies (Policies) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies Significant Accounting Policies (Policies) false false R28.htm 129 - Disclosure - Goodwill and Intangibles, net (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlockTables Goodwill and Intangibles, net (Tables) false false R29.htm 130 - Disclosure - Consolidated Core Companies (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlockTables Consolidated Core Companies (Tables) false false R30.htm 131 - Disclosure - Ownership Interests and Cost Method Companies (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsCostAndEquityMethodInvestmentsDisclosureTextBlockTables Ownership Interests and Cost Method Companies (Tables) false false R31.htm 132 - Disclosure - Financial Instruments (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlockTables Financial Instruments (Tables) false false R32.htm 133 - Disclosure - Fixed Assets (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsPropertyPlantAndEquipmentDisclosureTextBlockTables Fixed Assets (Tables) false false R33.htm 134 - Disclosure - Debt (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlockTables Debt (Tables) false false R34.htm 135 - Disclosure - Segment Information (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables Segment Information (Tables) false false R35.htm 136 - Disclosure - Equity-Based Compensation (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockTables Equity-Based Compensation (Tables) false false R36.htm 137 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables Commitments and Contingencies (Tables) false false R37.htm 138 - Disclosure - Other Income (Loss) (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsOtherIncomeAndOtherExpenseDisclosureTextBlockTables Other Income (Loss) (Tables) false false R38.htm 139 - Disclosure - Income Taxes (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables Income Taxes (Tables) false false R39.htm 140 - Disclosure - Net Income (Loss) per Share (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables Net Income (Loss) per Share (Tables) false false R40.htm 141 - Disclosure - Redeemable Noncontrolling Interest (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsMinorityInterestDisclosureTextBlockTables Redeemable Noncontrolling Interest (Tables) false false R41.htm 142 - Disclosure - Separate Financial Statements of Subsidiary not Consolidated (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsSeparateFinancialStatementsOfSubsidiaryNotConsolidatedTables Separate Financial Statements of Subsidiary not Consolidated (Tables) false false R42.htm 143 - Disclosure - Selected Quarterly Financial Information (Unaudited) (Tables) Sheet http://www.icg.com/taxonomy/role/NotesToFinancialStatementsScheduleOfSelectedQuarterlyFiscalDataTextBlockTables Selected Quarterly Financial Information (Unaudited) (Tables) false false R43.htm 144 - Disclosure - Company - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureCompanyAdditionalInformation Company - Additional Information (Detail) false false R44.htm 145 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSignificantAccountingPoliciesAdditionalInformation Significant Accounting Policies - Additional Information (Detail) false false R45.htm 146 - Disclosure - Summary of Activity Related to Goodwill (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfActivityRelatedToGoodwill Summary of Activity Related to Goodwill (Detail) false false R46.htm 147 - Disclosure - Goodwill and Intangibles Net - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureGoodwillAndIntangiblesNetAdditionalInformation Goodwill and Intangibles Net - Additional Information (Detail) false false R47.htm 148 - Disclosure - Summary of Intangible Assets from Continuing Operations (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfIntangibleAssetsFromContinuingOperations Summary of Intangible Assets from Continuing Operations (Detail) false false R48.htm 149 - Disclosure - Remaining Estimated Amortization Expense (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureRemainingEstimatedAmortizationExpense Remaining Estimated Amortization Expense (Detail) false false R49.htm 150 - Disclosure - Amounts of Impairments Recorded and Presentation of Impairment Charges under Various Methods of Accounting (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAmountsOfImpairmentsRecordedAndPresentationOfImpairmentChargesUnderVariousMethodsOfAccounting Amounts of Impairments Recorded and Presentation of Impairment Charges under Various Methods of Accounting (Detail) false false R50.htm 151 - Disclosure - Amounts of Impairments Recorded and Presentation of Impairment Charges under Various Methods of Accounting (Parenthetical) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAmountsOfImpairmentsRecordedAndPresentationOfImpairmentChargesUnderVariousMethodsOfAccountingParenthetical Amounts of Impairments Recorded and Presentation of Impairment Charges under Various Methods of Accounting (Parenthetical) (Detail) false false R51.htm 152 - Disclosure - Consolidated Core Companies - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureConsolidatedCoreCompaniesAdditionalInformation Consolidated Core Companies - Additional Information (Detail) false false R52.htm 153 - Disclosure - Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAllocationOfPurchasePriceForAcquisitionsAndEnterpriseValueOfChannelIntelligence Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Detail) false false R53.htm 154 - Disclosure - Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Parenthetical) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAllocationOfPurchasePriceForAcquisitionsAndEnterpriseValueOfChannelIntelligenceParenthetical Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Parenthetical) (Detail) false false R54.htm 155 - Disclosure - Pro Forma Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureProFormaInformation Pro Forma Information (Detail) false false R55.htm 156 - Disclosure - Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummarizedFinancialInformationRelatedToCompaniesAccountedForUnderEquityMethodOfAccounting Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) false false R56.htm 157 - Disclosure - Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Parenthetical) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummarizedFinancialInformationRelatedToCompaniesAccountedForUnderEquityMethodOfAccountingParenthetical Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Parenthetical) (Detail) false false R57.htm 158 - Disclosure - Ownership Interests and Cost Method Companies - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureOwnershipInterestsAndCostMethodCompaniesAdditionalInformation Ownership Interests and Cost Method Companies - Additional Information (Detail) false false R58.htm 159 - Disclosure - Results of Operations (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureResultsOfOperations Results of Operations (Detail) false false R59.htm 160 - Disclosure - Financial Instruments - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureFinancialInstrumentsAdditionalInformation Financial Instruments - Additional Information (Detail) false false R60.htm 161 - Disclosure - Classifications and Fair Value of Derivative Instruments (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureClassificationsAndFairValueOfDerivativeInstruments Classifications and Fair Value of Derivative Instruments (Detail) false false R61.htm 162 - Disclosure - Mark-to-Market Impact on Earnings Resulting from Hedging Activities (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureMarktoMarketImpactOnEarningsResultingFromHedgingActivities Mark-to-Market Impact on Earnings Resulting from Hedging Activities (Detail) false false R62.htm 163 - Disclosure - Fair Value Hierarchy of Financial Assets Measured at Fair Value on Recurring Basis (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureFairValueHierarchyOfFinancialAssetsMeasuredAtFairValueOnRecurringBasis Fair Value Hierarchy of Financial Assets Measured at Fair Value on Recurring Basis (Detail) false false R63.htm 164 - Disclosure - Goodwill and Intangibles, Net, Measured on Non-Recurring Basis Using Market Approach (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureGoodwillAndIntangiblesNetMeasuredOnNonRecurringBasisUsingMarketApproach Goodwill and Intangibles, Net, Measured on Non-Recurring Basis Using Market Approach (Detail) false false R64.htm 165 - Disclosure - Fixed Assets (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureFixedAssets Fixed Assets (Detail) false false R65.htm 166 - Disclosure - Fixed Assets - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureFixedAssetsAdditionalInformation Fixed Assets - Additional Information (Detail) false false R66.htm 167 - Disclosure - Debt - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureDebtAdditionalInformation Debt - Additional Information (Detail) false false R67.htm 168 - Disclosure - Long Term Debt Related to Consolidated Core Companies (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureLongTermDebtRelatedToConsolidatedCoreCompanies Long Term Debt Related to Consolidated Core Companies (Detail) false false R68.htm 169 - Disclosure - Maturity of Long-Term Debt (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureMaturityOfLongTermDebt Maturity of Long-Term Debt (Detail) false false R69.htm 170 - Disclosure - Segment Information - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSegmentInformationAdditionalInformation Segment Information - Additional Information (Detail) false false R70.htm 171 - Disclosure - Summary of Selected Information Related to Segments (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfSelectedInformationRelatedToSegments Summary of Selected Information Related to Segments (Detail) false false R71.htm 172 - Disclosure - Summary of Selected Information Related to Segments (Parenthetical) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfSelectedInformationRelatedToSegmentsParenthetical Summary of Selected Information Related to Segments (Parenthetical) (Detail) false false R72.htm 173 - Disclosure - ICG Group, Inc.'s Stockholders' Equity - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureICGGroupIncsStockholdersEquityAdditionalInformation ICG Group, Inc.'s Stockholders' Equity - Additional Information (Detail) false false R73.htm 174 - Disclosure - Equity-Based Compensation - Additional Information. (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureEquityBasedCompensationAdditionalInformation Equity-Based Compensation - Additional Information. (Detail) false false R74.htm 175 - Disclosure - Additional Information Related to Equity-Based Compensation (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAdditionalInformationRelatedToEquityBasedCompensation Additional Information Related to Equity-Based Compensation (Detail) false false R75.htm 176 - Disclosure - Changes in Stock Appreciation Rights (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureChangesInStockAppreciationRights Changes in Stock Appreciation Rights (Detail) false false R76.htm 177 - Disclosure - Changes in Stock Appreciation Rights (Parenthetical) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureChangesInStockAppreciationRightsParenthetical Changes in Stock Appreciation Rights (Parenthetical) (Detail) false false R77.htm 178 - Disclosure - Summary of Information about Stock Appreciation Rights Outstanding (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfInformationAboutStockAppreciationRightsOutstanding Summary of Information about Stock Appreciation Rights Outstanding (Detail) false false R78.htm 179 - Disclosure - Changes in Stock Options (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureChangesInStockOptions Changes in Stock Options (Detail) false false R79.htm 180 - Disclosure - Summary of Information about Stock Options Outstanding (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOfInformationAboutStockOptionsOutstanding Summary of Information about Stock Options Outstanding (Detail) false false R80.htm 181 - Disclosure - Assumptions Used to Determine Fair Value of Stock Appreciation Rights Granted to Employees (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureAssumptionsUsedToDetermineFairValueOfStockAppreciationRightsGrantedToEmployees Assumptions Used to Determine Fair Value of Stock Appreciation Rights Granted to Employees (Detail) false false R81.htm 182 - Disclosure - Changes in Restricted Stock (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureChangesInRestrictedStock Changes in Restricted Stock (Detail) false false R82.htm 183 - Disclosure - Changes in Deferred Stock Units Related to Annual Grants (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureChangesInDeferredStockUnitsRelatedToAnnualGrants Changes in Deferred Stock Units Related to Annual Grants (Detail) false false R83.htm 184 - Disclosure - Future Minimum Lease Payments under Leases (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureFutureMinimumLeasePaymentsUnderLeases Future Minimum Lease Payments under Leases (Detail) false false R84.htm 185 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation Commitments and Contingencies - Additional Information (Detail) false false R85.htm 186 - Disclosure - Other Income (Loss), Net (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureOtherIncomeLossNet Other Income (Loss), Net (Detail) false false R86.htm 187 - Disclosure - Other Income (Loss) - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureOtherIncomeLossAdditionalInformation Other Income (Loss) - Additional Information (Detail) false false R87.htm 188 - Disclosure - Total Income Tax (Benefit) Expense (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureTotalIncomeTaxBenefitExpense Total Income Tax (Benefit) Expense (Detail) false false R88.htm 189 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation Income Taxes - Additional Information (Detail) false false R89.htm 190 - Disclosure - Net Deferred Tax Asset (Liability) (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureNetDeferredTaxAssetLiability Net Deferred Tax Asset (Liability) (Detail) false false R90.htm 191 - Disclosure - Differences in Effective Tax Rate and Federal Statutory Rate (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureDifferencesInEffectiveTaxRateAndFederalStatutoryRate Differences in Effective Tax Rate and Federal Statutory Rate (Detail) false false R91.htm 192 - Disclosure - Calculations of Net Income (Loss) Per Share (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureCalculationsOfNetIncomeLossPerShare Calculations of Net Income (Loss) Per Share (Detail) false false R92.htm 193 - Disclosure - Potentially Dilutive Securities Not Included in Computation of Diluted Net Loss Per Share (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosurePotentiallyDilutiveSecuritiesNotIncludedInComputationOfDilutedNetLossPerShare Potentially Dilutive Securities Not Included in Computation of Diluted Net Loss Per Share (Detail) false false R93.htm 194 - Disclosure - Reconciliation of Activity Related to Redeemable Noncontrolling Interest (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureReconciliationOfActivityRelatedToRedeemableNoncontrollingInterest Reconciliation of Activity Related to Redeemable Noncontrolling Interest (Detail) false false R94.htm 195 - Disclosure - Summary on Equity Ownership Interest - Additional Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummaryOnEquityOwnershipInterestAdditionalInformation Summary on Equity Ownership Interest - Additional Information (Detail) false false R95.htm 196 - Disclosure - Summarized Financial Information for StarCite (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSummarizedFinancialInformationForStarCite Summarized Financial Information for StarCite (Detail) false false R96.htm 197 - Disclosure - Selected Quarterly Consolidated Financial Information (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureSelectedQuarterlyConsolidatedFinancialInformation Selected Quarterly Consolidated Financial Information (Detail) false false R97.htm 198 - Disclosure - Valuation and Qualifying Accounts (Detail) Sheet http://www.icg.com/taxonomy/role/DisclosureValuationAndQualifyingAccounts Valuation and Qualifying Accounts (Detail) false false All Reports Book All Reports Element icge_EquityMethodOrCostMethodInvestmentRealizedGainLossOnDisposalOwnershipInterest had a mix of decimals attribute values: -5 -3. Element icge_GainOnOtherDistributions had a mix of decimals attribute values: -4 -3. Element icge_OtherAssetsFromFormerEquityCompanySale had a mix of decimals attribute values: -5 -3. Element icge_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingPercentage had a mix of decimals attribute values: 2 3. Element us-gaap_AmortizationOfIntangibleAssets had a mix of decimals attribute values: -5 -3. Element us-gaap_AssetImpairmentCharges had a mix of decimals attribute values: -5 -3. Element us-gaap_EquityMethodInvestmentOwnershipPercentage had a mix of decimals attribute values: 2 3. Element us-gaap_Goodwill had a mix of decimals attribute values: -5 -3. Element us-gaap_GoodwillImpairmentLoss had a mix of decimals attribute values: -5 -3. Element us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax had a mix of decimals attribute values: -5 -3. Element us-gaap_IncomeTaxExpenseBenefit had a mix of decimals attribute values: -5 -3. Element us-gaap_IncreaseDecreaseInAccountsReceivable had a mix of decimals attribute values: -5 -3. Element us-gaap_MinorityInterest had a mix of decimals attribute values: -5 -3. Element us-gaap_OperatingLossCarryforwards had a mix of decimals attribute values: -6 -5. Element us-gaap_OtherNonoperatingIncomeExpense had a mix of decimals attribute values: -5 -3. Element us-gaap_PaymentsOfDividends had a mix of decimals attribute values: -5 -3. Element us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities had a mix of decimals attribute values: -5 -3. Element us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised had a mix of decimals attribute values: -3 0. 'Shares' elements on report '106 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY' had a mix of different decimal attribute values. 'Monetary' elements on report '145 - Disclosure - Significant Accounting Policies - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '147 - Disclosure - Goodwill and Intangibles Net - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '151 - Disclosure - Amounts of Impairments Recorded and Presentation of Impairment Charges under Various Methods of Accounting (Parenthetical) (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '152 - Disclosure - Consolidated Core Companies - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '158 - Disclosure - Ownership Interests and Cost Method Companies - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '160 - Disclosure - Financial Instruments - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '167 - Disclosure - Debt - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '187 - Disclosure - Other Income (Loss) - Additional Information (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '189 - Disclosure - Income Taxes - Additional Information (Detail)' had a mix of different decimal attribute values. Process Flow-Through: 103 - Statement - CONSOLIDATED BALANCE SHEETS Process Flow-Through: Removing column 'Dec. 31, 2010' Process Flow-Through: Removing column 'Dec. 31, 2009' Process Flow-Through: 104 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Process Flow-Through: 105 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2011' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2011' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2011' Process Flow-Through: 107 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS icge-20121231.xml icge-20121231.xsd icge-20121231_cal.xml icge-20121231_def.xml icge-20121231_lab.xml icge-20121231_pre.xml true true