2.4.0.6 Html 144 242 1 false 51 0 false 7 false false R1.htm 101 - Document - Document and Entity Information Sheet http://www.constantcontact.com/taxonomy/role/DocumentDocumentandEntityInformation Document and Entity Information true false R2.htm 103 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.constantcontact.com/taxonomy/role/StatementOfFinancialPositionClassified Condensed Consolidated Balance Sheets false false R3.htm 104 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.constantcontact.com/taxonomy/role/StatementOfFinancialPositionClassifiedParenthetical Condensed Consolidated Balance Sheets (Parenthetical) false false R4.htm 105 - Statement - Condensed Consolidated Statements of Operations Sheet http://www.constantcontact.com/taxonomy/role/StatementOfIncome Condensed Consolidated Statements of Operations false false R5.htm 106 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) Sheet http://www.constantcontact.com/taxonomy/role/StatementOfOtherComprehensiveIncome Condensed Consolidated Statements of Comprehensive Income (Loss) false false R6.htm 107 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://www.constantcontact.com/taxonomy/role/StatementOfCashFlowsIndirect Condensed Consolidated Statements of Cash Flows false false R7.htm 108 - Disclosure - Nature of the Business Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsNatureOfOperations Nature of the Business false false R8.htm 109 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlock Summary of Significant Accounting Policies false false R9.htm 110 - Disclosure - Acquisitions Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlock Acquisitions false false R10.htm 111 - Disclosure - Goodwill and Acquired Intangible Assets Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlock Goodwill and Acquired Intangible Assets false false R11.htm 112 - Disclosure - Stock-Based Awards Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock Stock-Based Awards false false R12.htm 113 - Disclosure - Income Taxes Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock Income Taxes false false R13.htm 114 - Disclosure - Accrued Expenses Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlock Accrued Expenses false false R14.htm 115 - Disclosure - Commitments and Contingencies Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock Commitments and Contingencies false false R15.htm 116 - Disclosure - 401(k) Savings Plan Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsPensionAndOtherPostretirementBenefitsDisclosureTextBlock 401(k) Savings Plan false false R16.htm 117 - Disclosure - Subsequent Event Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsSubsequentEventsTextBlock Subsequent Event false false R17.htm 118 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies Summary of Significant Accounting Policies (Policies) false false R18.htm 119 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockTables Summary of Significant Accounting Policies (Tables) false false R19.htm 120 - Disclosure - Acquisitions (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsBusinessCombinationDisclosureTextBlockTables Acquisitions (Tables) false false R20.htm 121 - Disclosure - Goodwill and Acquired Intangible Assets (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsGoodwillAndIntangibleAssetsDisclosureTextBlockTables Goodwill and Acquired Intangible Assets (Tables) false false R21.htm 122 - Disclosure - Stock-Based Awards (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockTables Stock-Based Awards (Tables) false false R22.htm 123 - Disclosure - Accrued Expenses (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlockTables Accrued Expenses (Tables) false false R23.htm 124 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.constantcontact.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables Commitments and Contingencies (Tables) false false R24.htm 125 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformation Summary of Significant Accounting Policies - Additional Information (Detail) false false R25.htm 126 - Disclosure - Summary of Significant Accounting Policies - Marketable Securities (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesMarketableSecurities Summary of Significant Accounting Policies - Marketable Securities (Detail) false false R26.htm 127 - Disclosure - Summary of Significant Accounting Policies - Fair Value Hierarchy for Cash Equivalents and Marketable Securities Measured at Fair Value on Recurring Basis (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValueHierarchyForCashEquivalentsAndMarketableSecuritiesMeasuredAtFairValueOnRecurringBasis Summary of Significant Accounting Policies - Fair Value Hierarchy for Cash Equivalents and Marketable Securities Measured at Fair Value on Recurring Basis (Detail) false false R27.htm 128 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesEstimatedUsefulLivesOfAssets Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Detail) false false R28.htm 129 - Disclosure - Summary of Significant Accounting Policies - Shares Used in Computing Diluted Net Income (Loss) Per Share (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesSharesUsedInComputingDilutedNetIncomeLossPerShare Summary of Significant Accounting Policies - Shares Used in Computing Diluted Net Income (Loss) Per Share (Detail) false false R29.htm 130 - Disclosure - Summary of Significant Accounting Policies - Common Stock Equivalents Excluded from Computation of Diluted Net Income (Loss) Per Share (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesCommonStockEquivalentsExcludedFromComputationOfDilutedNetIncomeLossPerShare Summary of Significant Accounting Policies - Common Stock Equivalents Excluded from Computation of Diluted Net Income (Loss) Per Share (Detail) false false R30.htm 131 - Disclosure - Acquisitions - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureAcquisitionsAdditionalInformation Acquisitions - Additional Information (Detail) false false R31.htm 132 - Disclosure - Acquisitions - Allocation of Purchase Price (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureAcquisitionsAllocationOfPurchasePrice Acquisitions - Allocation of Purchase Price (Detail) false false R32.htm 133 - Disclosure - Acquisitions - Estimated Fair Values and Useful Lives of Identifiable Intangible Assets Acquired (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureAcquisitionsEstimatedFairValuesAndUsefulLivesOfIdentifiableIntangibleAssetsAcquired Acquisitions - Estimated Fair Values and Useful Lives of Identifiable Intangible Assets Acquired (Detail) false false R33.htm 134 - Disclosure - Acquisitions - Pro Forma Results of Historical Consolidated Statements of Operations (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureAcquisitionsProFormaResultsOfHistoricalConsolidatedStatementsOfOperations Acquisitions - Pro Forma Results of Historical Consolidated Statements of Operations (Detail) false false R34.htm 135 - Disclosure - Goodwill and Acquired Intangible Assets - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureGoodwillAndAcquiredIntangibleAssetsAdditionalInformation Goodwill and Acquired Intangible Assets - Additional Information (Detail) false false R35.htm 136 - Disclosure - Goodwill and Acquired Intangible Assets - Intangible Assets (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureGoodwillAndAcquiredIntangibleAssetsIntangibleAssets Goodwill and Acquired Intangible Assets - Intangible Assets (Detail) false false R36.htm 137 - Disclosure - Goodwill and Acquired Intangible Assets - Future Estimated Amortization Expense for Assets Placed in Service (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureGoodwillAndAcquiredIntangibleAssetsFutureEstimatedAmortizationExpenseForAssetsPlacedInService Goodwill and Acquired Intangible Assets - Future Estimated Amortization Expense for Assets Placed in Service (Detail) false false R37.htm 138 - Disclosure - Stock-Based Awards - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureStockBasedAwardsAdditionalInformation Stock-Based Awards - Additional Information (Detail) false false R38.htm 139 - Disclosure - Stock-Based Awards - Stock-Based Compensation Expense (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureStockBasedAwardsStockBasedCompensationExpense Stock-Based Awards - Stock-Based Compensation Expense (Detail) false false R39.htm 140 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation Income Taxes - Additional Information (Detail) false false R40.htm 141 - Disclosure - Accrued Expenses - Components of Accrued Expenses (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureAccruedExpensesComponentsOfAccruedExpenses Accrued Expenses - Components of Accrued Expenses (Detail) false false R41.htm 142 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation Commitments and Contingencies - Additional Information (Detail) false false R42.htm 143 - Disclosure - Commitments and Contingencies - Future Minimum Lease Payments Under Leases and Agreements (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureCommitmentsAndContingenciesFutureMinimumLeasePaymentsUnderLeasesAndAgreements Commitments and Contingencies - Future Minimum Lease Payments Under Leases and Agreements (Detail) false false R43.htm 144 - Disclosure - 401(k) Savings Plan - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/Disclosure401kSavingsPlanAdditionalInformation 401(k) Savings Plan - Additional Information (Detail) false false R44.htm 145 - Disclosure - Subsequent Event - Additional Information (Detail) Sheet http://www.constantcontact.com/taxonomy/role/DisclosureSubsequentEventAdditionalInformation Subsequent Event - Additional Information (Detail) false false All Reports Book All Reports Process Flow-Through: 103 - Statement - Condensed Consolidated Balance Sheets Process Flow-Through: Removing column 'Mar. 31, 2012' Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: 104 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 105 - Statement - Condensed Consolidated Statements of Operations Process Flow-Through: 106 - Statement - Condensed Consolidated Statements of Comprehensive Income (Loss) Process Flow-Through: 107 - Statement - Condensed Consolidated Statements of Cash Flows ctct-20130331.xml ctct-20130331.xsd ctct-20130331_cal.xml ctct-20130331_def.xml ctct-20130331_lab.xml ctct-20130331_pre.xml true true