Document and Entity Information Document And Entity Information [Abstract] Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Trading Symbol Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Consolidated Balance Sheets [Abstract] Assets Abstract ASSETS Assets, Current [Abstract] CURRENT ASSETS: Cash and cash equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Accounts receivable2 Accounts receivable-net Current portion of accounts receivable-net Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Contract revenues in excess of billings Inventory Net Inventories Prepaid Expense and Other Assets, Current Assets Held-for-sale, Current Assets, Current Total current assets PROPERTY AND EQUIPMENT - Net PROPERTY AND EQUIPMENT-Net Property and equipment - net Intangible Assets, Net (Including Goodwill) GOODWILL AND OTHER INTANGIBLE INVENTORIES - Noncurrent INVENTORIES-Noncurrent INVESTMENTS IN JOINT VENTURES INVESTMENTS IN JOINT VENTURES Investment in joint ventures ASSETS HELD FOR SALE-Noncurrent Other noncurrent assets OTHER Assets Total assets TOTAL Liabilities and Equity [Abstract] LIABILITIES AND EQUITY Liabilities, Current [Abstract] CURRENT LIABILITIES: Accounts payable Accrued Liabilities Current Accrued expenses Total accrued expenses Billings in excess of contract revenues Total billings in excess of contract revenues Liabilities held for sale Liabilities held for sale Liabilities, Current Total current liabilities Senior Notes 7 3/8% SENIOR NOTES Line of Credit Facility, Amount Outstanding REVOLVING CREDIT FACILITY DEFERRED INCOME TAXES Liabilities held for sale, noncurrent Liabilities held for sale, noncurrent OTHER Liabilities Total liabilities EQUITY: Common stock-$.0001 par value; 90,000,000 authorized, 58,671,956 and 58,542,038 shares issued and outstanding at June 30, 2010 and December 31, 2009, respectively. Common stock-$.0001 par value; 90,000 authorized, 59,784 and 59,670 shares issued and outstanding at March 31, 2014 and December 31, 2013, respectively. Additional paid-in capital Accumulated deficit Accumulated deficit Accumulated other comprehensive income (loss) Accumulated other comprehensive loss Stockholders' Equity Attributable to Parent Total Great Lakes Dredge & Dock Corporation equity NONCONTROLLING INTERESTS NONCONTROLLING INTERESTS Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest BALANCE - value BALANCE - value Total equity Liabilities and Equity TOTAL Common Stock, Par Value Common stock, par value Common Stock, Shares authorized Common stock, shares authorized Common Stock, Shares issued Common stock, shares issued Common Stock, Shares outstanding Common stock, shares outstanding Consolidated Statements Of Operations [Abstract] Contract revenues CONTRACT REVENUES Costs of contract revenues Costs of contract revenues COSTS OF CONTRACT REVENUES Gross Profit GROSS PROFIT Operating Expenses [Abstract] OPERATING EXPENSES: General and administrative expenses General and administrative expenses GENERAL AND ADMINISTRATIVE EXPENSES Gain (Loss) on Sale of Other Assets Gain on sale of assets-net Loss on sale of assets-net Operating Income (Loss) Operating income (loss) Total operating income Nonoperating Income (Expense) [Abstract] OTHER EXPENSE: Interest expense - net Interest expense-net Equity in loss of joint ventures Equity in loss of joint ventures Equity in loss of joint ventures Foreign Currency Transaction Loss, before Tax Loss on foreign currency transactions-net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income (loss) from continuing operations before income taxes Income tax provision Income tax (provision) benefit Income tax (provision) benefit IncomeLossFromContinuingOperations Income (loss) from continuing operations Income (Loss) from Continuing Operations Attributable to Parent, Total IncomeLossFromDiscontinuedOperationsNetOfTax Loss from discontinued operations, net of income taxes Loss from discontinued operations, net of income taxes Net income Net income (loss) NET INCOME Net income Net loss attributable to noncontrolling interests Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Parent Nte income (loss) Net income (loss) attributable to common stockholders of Great Lakes Dredge & Dock Corporation Net income attributable to common stockholders of Great Lakes Dredge & Dock Corporation IncomeLossFromContinuingOperationsPerBasicShare Basic earnings (loss) per share attributable to continuing operations IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare Basic loss per share attributable to discontinued operations, net of tax Basic earnings (loss) per share attributable to Great Lakes Dredge & Dock Corporation IncomeLossFromContinuingOperationsPerDilutedShare Diluted earnings (loss) per share attributable to continuing operations IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare Diluted loss per share attributable to discontinued operations, net of tax Basic weighted average shares Weighted-average common shares outstanding - basic Basic weighted average shares Diluted earnings (loss) per share attributable to Great Lakes Dredge & Dock Corporation Diluted weighted average shares Weighted-average common shares outstanding - diluted Diluted weighted average shares Consolidated Statements Of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Currency translation adjustment-net of tax Change in fair value of derivatives-net of tax Net unrealized (gain) loss on derivatives-net of tax (2) Net unrealized (gain) loss on derivatives-net of tax (2) Other Comprehensive Income (Loss), Net of Tax Other comprehensive loss-net of tax Other comprehensive income (loss)-net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive loss attributable to noncontrolling interests Total comprehensive income (loss) Comprehensive income (loss) attributable to Great Lakes Dredge & Dock Corporation Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Currency translation adjustment, tax Reclassification of derivative gains (losses) to earnings, tax Consolidated Statements Of Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Parent [Member] Common Stock [Member] Common Stock [Member] Additional Paid In Capital [Member] Additional Paid-In Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Deficit [Member] Accumulated Deficit [Member] Accumulated Deficit [Member] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income (Loss)[Member] Noncontrolling Interest [Member] Noncontrolling Interests [Member] Shares, Issued BALANCE - shares BALANCE - shares Share-based compensation, Value Share-based compensation, Shares Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Vesting of restricted stock units, including impact of shares withheld for taxes, value Vesting of RSU's Vesting of restricted stock units, including impact of shares withheld for taxes, shares Exercise of stock options, Value Exercise of stock options, Shares Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Excess income tax benefit from share based compensation Distributions paid to noncontrolling interests. Distributions paid to noncontrolling interests Distributions paid to noncontrolling interests Consolidated Statements Of Cash Flows [Abstract] OPERATING ACTIVITIES: Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest Loss from discontinued operations, net of income taxes Loss on discontinued operations, net of income taxes, attributable to Great Lakes Dredge & Dock Corporation Adjustments to reconcile net income to net cash flows used in operating activities: Depreciation and amortization Deferred Income Tax Expense Benefit Deferred income taxes Gain on dispositions of property and equipment Loss on dispositions of property and equipment Amortization of deferred financing fees Foreign Currency Transaction Gain (Loss), Unrealized Unrealized foreign currency (gain) loss Share-based compensation expense Excess Tax Benefit from Share-based Compensation, Operating Activities Excess income tax benefit from share based compensation Changes in assets and liabilities: Accounts receivable 1 Accounts receivable Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Contract revenues in excess of billings Inventories Inventories Prepaid expenses and other current assets Prepaid expenses and other current assets Accounts payable and accrued expenses Increase Decrease In Billings In Excess Of Cost Increase Decrease In Billings In Excess Of Cost Billings in excess of contract revenues Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net Other noncurrent assets and liabilities NetCashProvidedByUsedInOperatingActivitiesContinuingOperations Net cash flows provided by (used in) operating activities of continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations Net cash flows used in operating activities of discontinued operations Net Cash Provided by (Used in) Operating Activities Cash provided by (used in) operating activities INVESTING ACTIVITIES: Purchases of property and equipment Purchases of property and equipment Dispositions of property and equipment Proceeds from dispositions of property and equipment Proceeds from vendor performance obligations Proceeds from vendor performance obligations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations Net cash flows used in investing activities of continuing operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations, Total CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations Net cash flows used in investing activities of discontinued operations Net Cash Provided by (Used in) Investing Activities Cash used in investing activities FINANCING ACTIVITIES: Repayments of Long-term Debt Repayment of long term note payable Payments Related to Tax Withholding for Share-based Compensation Taxes paid on settlement of vested share awards MinorityInterestDecreaseFromRedemptions Purchase of noncontrolling interest Exercise of stock Excess Tax Benefit from Share-based Compensation, Financing Activities Excess income tax benefit from share-based compensation Borrowings under revolving loans Repayments of revolving loans Repayments of revolving loans NetCashProvidedByUsedInFinancingActivitiesContinuingOperations Net cash flows provided by financing activities of continuing operations Net Cash Provided by (Used in) Financing Activities, Continuing Operations, Total CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations Net cash flows used in financing activities of discontinued operations Net Cash Provided by (Used in) Financing Activities Cash provided by financing activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of foreign currency exchange rates on cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net decrease in cash and cash equivalents Supplemental Cash Flow Information Cash paid for interest Cash paid (refunded) for income taxes Non-cash Investing and Financing Activities Property and equipment purchased but not yet paid Purchase of noncontrolling interest in non cash investing and financing activies Purchase of noncontrolling interest in non cash investing and financing activies Basis of presentation BasisOfPresentationAndSignificantAccountingPoliciesTextBlock Basis of presentation Earnings Per Share [Abstract] Earnings Per Share [Text Block] Accounts Receivable And Contracts In Progress [Abstract] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounts Receivables And Contracts In Progress Accrued Expenses [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses Long-Term Debt [Abstract] Long-term Debt [Text Block] Long-Term Debt Fair Value Measurements [Abstract] Fair value measurements [Text Block] Fair Value Measurements Commitments And Contingencies [Abstract] Commitments And Contingencies Disclosure Text Block Commitments And Contingencies Business Dispositions [Abstract] Business Acquisition, Integration, Restructuring and Other Related Costs [Text Block] Business Combinations And Reorganizations Segment Information [Abstract] Segment Reporting Disclosure [Text Block] Segment Information Subsidiary Guarantors [Abstract] Subsidiary Guarantors [Text Block] Subsidiary Guarantors Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Computations For Basic And Diluted Earnings Per Share Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule Of Accounts Receivable Components Of Contracts In Progress [Table Text Block] Components Of Contracts In Progress [Table Text Block] Components Of Contracts In Progress Schedule of Accrued Liabilities [Table Text Block] Accrued Expenses Adjustments Reclassified From Accumulated Other Comprehensive Income To Earnings (Table) (TextBlock) Adjustments Reclassified From Accumulated Other Comprehensive Income To Earnings (Table) (TextBlock) Adjustments Reclassified From Accumulated Other Comprehensive Income To Earnings Changes In Components Of Accumulated Other Comprehensive Income (Table) (Text Block) Changes In Components Of Accumulated Other Comprehensive Income (Table) (Text Block) Schedule of Fair Values Of Financial Instruments and Nonfinancial Assets and Liabilities Measured (Table) (Text Block) Schedule of fair values of these financial instruments and nonfinancial assets and liabilities measured at the reporting (Table) (Text Block) Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule Fair Value Measurements Balance Sheet Location ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock Schedule Of Discontinued Operation Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Reporting By Segment Schedule of Condensed Balance Sheet [Table Text Block] Condensed Consolidating of Balance Sheet Schedule Of Condensed Consolidating Operations And Comprehensive Income (Table) (TextBlock) Schedule Of Condensed Consolidating Operations And Comprehensive Income (Table) (TextBlock) Condensed Cash Flow Statement [Table Text Block] Condensed Cash Flow Statement Nature Of Business And Summary Of Significant Accounting Policies [Table] Nature Of Business And Summary Of Significant Accounting Policies [Table] Range [Axis] Range [Member] Range [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Nature Of Business And Summary Of Significant Accounting Policies [Line Items] Nature Of Business And Summary Of Significant Accounting Policies [Line Items] Equipment-Related Costs, Percentage Of Costs Of Contract Revenue Equipment-Related Costs, Percentage Of Costs Of Contract Revenue Average equipment-related costs of total costs of contract revenue Number of Reportable Segments Number of reportable segments Number of Operating Segments Debt Instrument, Basis Spread on Variable Rate Revolving credit facility, basis spread on variable rate Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Shares excluded from computation of diluted earnings per share Potentially dilutive stock options and restricted stock units Potentially dilutive stock options and restricted stock units Legal Entity [Axis] Entity [Domain] Entity [Domain] Parent Company [Member] GLDD Corporation [Member] Weighted Average Number Diluted Shares Outstanding Adjustment Effect of stock options and restricted stock units Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Contract Receivable Type [Axis] Contract Receivable Type [Axis] Contract Receivable Type [Domain] Contract Receivable Type [Domain] Contract Receivable Type [Domain] Completed Contracts [Member] Completed Contracts [Member] Completed Contracts [Member] Contracts In Progress [Member] Contracts In Progress [Member] Contracts In Progress [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Receivable [Line Items] Contract Receivable Contracts Contract Receivable Retainage Retainage Accounts Receivable, Gross Allowance for Doubtful Accounts Receivable Allowance for doubtful accounts Accounts Receivable, Net Total accounts receivable-net Costs And Earnings In Excess Of Billings [Member] Costs And Earnings In Excess Of Billings [Member] Costs And Earnings In Excess Of Billings [Member] Billings In Excess Of Costs And Earnings [Member] Billings In Excess Of Costs And Earnings [Member] Billings In Excess Of Costs And Earnings [Member] Costs and earnings for contracts in progress. Costs And Earnings For Contracts In Progress Costs and earnings for contracts in progress Billings for contracts in progress. Billings For Contracts In Progress Amounts billed Costs and earnings in excess of billings for contracts in progress. Costs And Earnings In Excess Of Billings For Contracts In Progress Costs and earnings in excess of billings for contracts in progress Costs and earnings in excess of billings for completed contracts. Costs and Earnings In Excess Of Billings For Completed Contracts Costs and earnings in excess of billings for completed contracts Costs in Excess of Billings on Uncompleted Contracts or Programs Total contract revenues in excess of billings Billings in excess of costs and earnings:, Amounts billed Billings in excess of costs and earnings, Amounts billed Billings in excess of costs and earnings, Costs and earnings for contracts in progress Billings in excess of costs and earnings, Costs and earnings for contracts in progress Employee-related Liabilities, Current Payroll and employee benefits Accrued Insurance, Current Insurance Taxes Payable, Current Income and other taxes Interest Payable, Current Interest Percentage of completion adjustment Percentage of completion adjustment Other Accrued Liabilities, Current Other Schedule of Long-term Debt Instruments [Table] Interest Rate, Types [Axis] Interest Rate, Types [Axis] Interest Rate, Types [Domain] Interest Rate Types [Domain] Interest Rate, Types [Domain] LIBOR Rate [Member] Libor Rate [Member] LIBOR Rate [Member] Base Rate [Member] Base Rate [Member] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Standby Letters Of Credit [Member] Standby Letters of Credit [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Multicurrency [Member] Multicurrency [Member] Multicurrency [Member] Swingline Loans [Member] Swingline Loans [Member] Swingline Loans [Member] Long-term Debt, Type [Axis] Longterm Debt Type [Domain] Long-term Debt, Type [Domain] Senior Notes [Member] Senior Notes [Member] Foreign Line Of Credit [Member] Foreign Line of Credit [Member] Debt Instrument [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Letters of credit , maximum borrowing capacity Line of credit facility, maximum borrowing capacity Line of credit facility optional increase capacity Line of credit facility optional increase capacity Debt Instrument, Description of Variable Rate Basis Revolving credit facility, interest rate description Net Leverage Ratio Net Leverage Ratio Fixed Charge Coverage Ratio Fixed Charge Coverage Ratio Total Leverage Ratio Total Leverage Ratio Letters of Credit Outstanding, Amount Letters of credit outstanding Percentage Of Debt Instrument Issued At Face Value Percentage Of Debt Instrument Issued At Face Value Line of Credit Facility, Remaining Borrowing Capacity Letter of credit remaining borrowing capacity Debt Instrument, Face Amount Debt instrument, face amount Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Inputs Level1 [Member] Fair Value, Inputs, Level 1 [Member] Derivative underlying hedge percent. Derivative Underlying Hedge Percent Derivative underlying hedge percent Derivative, Nonmonetary Notional Amount Derivative, Swap Type, Fixed Price Fixed price range Derivative asset, fair value, gross asset Reclassification of derivative losses to earnings-net of tax Reclassification of derivative losses (gains) to earnings-net of tax Fair value hedge liabilities Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Senior notes interest rate Eligible Item or Group for Fair Value Option [Axis] Fair Value Option Eligible Item Or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Fuel Hedge Contracts [Member] Fuel Hedge Contracts [Member] Fuel Hedge Contracts [Member] Fair Value Inputs Level2 [Member] Fair Value, Inputs, Level 2 [Member] Assets, Fair Value Disclosure Assets, fair value disclosure Liabilities, Fair Value Disclosure Liabilities, fair value disclosure Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Derivatives, Fair Value [Line Items] OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax Cumulative translation adjustments-net of tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax Total other comprehensive income (loss) Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated As Hedging Instrument [Member] Designated as Hedging Instrument [Member] Cash And Cash Equivalents [Member] Cash and Cash Equivalents [Member] Other Current Assets [Member] Other Current Assets [Member] Accrued Liabilities [Member] Accrued Liabilities [Member] Derivative Asset, Fair Value, Gross Liability Derivative asset, fair value, gross liability Commitments And Contingencies [Table] Commitments And Contingencies [Table] Gain Contingencies, Nature [Axis] Gain Contingency Nature [Domain] Gain Contingency, Nature [Domain] Projects Accounted For Discontinued Operations [Member] Projects Accounted For Discontinued Operations [Member] Projects Accounted For Discontinued Operations [Member] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Bids bond range Bids bond range Outstanding performance bonds Outstanding performance bonds Revenue value remaining from outstanding performance bonds Revenue value remaining from outstanding performance bonds Warranty periods Warranty periods Proceeds from Lines of Credit Gain (Loss) Related to Litigation Settlement Funds remitted Funds remitted DisposalGroupIncludingDiscontinuedOperationRevenue Revenue DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax Loss before income taxes from discontinued operations DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax Income tax benefit DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet Accounts receivable - net from discontinued operations Assets and liabilities of businesses reported as discontinued operations for contracts revenues in excess of billing Assets and liabilities of businesses reported as discontinued operations for contracts revenues in excess of billing DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets Other current assets DisposalGroupIncludingDiscontinuedOperationGoodwill Property and equipment-net DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNet Other intangible assets -net AssetsOfDisposalGroupIncludingDiscontinuedOperation Assets of discontinued operations DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent Accounts payable from discontinued operations DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent Accrued expenses Reserve for loss on disposal Reserve for loss on disposal Reserve for loss on disposal from discontinued operations DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities Other current liabilities from discontinued operations DisposalGroupIncludingDiscontinuedOperationOtherLiabilities Other liabilities from discontinued operations Liabilities of Disposal Group, Including Discontinued Operation Liabilities of discontinued operations Schedule of Segment Reporting Information, by Segment [Table] Business Segments [Axis] Segment [Domain] Segment [Domain] Dredging [Member] Dredging [Member] Dredging [Member] Demolition [Member] Demolition [Member] Demolition [Member] Segment Reporting Information [Line Items] Owned Domestic Subsidiaries Percent Owned Domestic Subsidiaries Percent Schedule of Condensed Financial Statements [Table] Subsidiaries [Member] Subsidiaries [Member] Guarantor Subsidiaries [Member] Subsidiary Guarantors [Member] Non Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Consolidation Eliminations [Member] Eliminations [Member] Condensed Financial Statements, Captions [Line Items] Due from Affiliate, Current Receivables from affiliates Investments in subsidiaries. Investments in subsidiaries INVESTMENTS IN SUBSIDIARIES Due to Affiliate, Current Payables to affiliates Income (loss) from equity investments in subsidiaries. Income Loss From Equity Investments In Subsidiaries Equity in earnings (loss) of subsidiaries Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Comprehensive income (loss) attributable to Great Lakes Dredge & Dock Corporation Payments for proceeds from accounts with affiliates. Payments For Proceeds From Accounts With Affiliates Net change in accounts with affiliates Net change in accounts with affiliates, in finance activities Net change in accounts with affiliates, in finance activities Capital contributions Capital contributions Foreign [Member] Foreign [Member] Foreign [Member] Intersegment Revenues [Member] Intersegment Revenues [Member] Intersegment Revenues [Member]