Accounting Policies [Abstract] Reclassifications Reclassification, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Percentage-of-Completion Method [Policy Text Block] Classification of Current Assets and Liabilities Classification of Current Assets and Liabilities [Policy Text Block] Classification of Current Assets and Liabilities [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Foreign Currencies Foreign Currency Transactions and Translations Policy [Policy Text Block] Risk Concentrations Concentration Risk, Credit Risk, Policy [Policy Text Block] Accounts Receivable Receivables, Policy [Policy Text Block] Advertising Costs Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] Environmental Costs Environmental Costs, Policy [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Inventory Inventory, Policy [Policy Text Block] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Insurance Coverage Insurance Coverage [Policy Text Block] Insurance Coverage [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Earnings Per Share [Abstract] Schedule of earnings per share, basic and diluted Schedule of Weighted Average Number of Shares [Table Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable: Accounts Receivable, Net, Current [Abstract] Trade, net of allowance of $0 Trade Accounts Receivable, Net, Current Trade Accounts Receivable, Net, Current Retainage Contract Receivable Retainage Other Other Receivables Income taxes receivable Income Taxes Receivable, Current Note receivable Notes, Loans and Financing Receivable, Net, Current Inventory Inventory, Net Deferred tax asset Deferred Tax Assets, Net, Current Costs and estimated earnings in excess of billings on uncompleted contracts Costs in Excess of Billings on Uncompleted Contracts or Programs Expected to be Collected within One Year Asset held for sale Assets Held-for-sale, Current Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Accounts receivable, long-term Accounts Receivable, Net, Noncurrent Inventory, non-current Inventory, Noncurrent Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Current debt Debt, Current Accounts payable: Accounts Payable, Current [Abstract] Trade Accounts Payable, Trade, Current Retainage Retention Payable, Due in Next Rolling Twelve Months Accrued liabilities Accrued Liabilities, Current Accrued Income Taxes, Current Accrued Income Taxes, Current Billings in excess of costs and estimated earnings on uncompleted contracts Billings in Excess of Cost, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Deferred revenue Deferred Revenue, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued Preferred Stock, Value, Issued Common stock -- $0.01 par value, 50,000,000 authorized, 27,627,321 and 27,530,220 issued; 27,309,590 and 27,212,489 outstanding at June 30, 2013 and December 31, 2012, respectively Common Stock, Value, Issued Treasury stock, 317,731 shares, at cost Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Equity attributable to common stockholders Stockholders' Equity Attributable to Parent Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Payables and Accruals [Abstract] Accrued Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Schedule of Insurance Coverage [Table] Schedule of Insurance Coverage [Table] Schedule of Insurance Coverage [Table] Insurance Coverage by Liability Policies [Axis] Insurance Coverage by Liability Policies [Axis] Insurance Coverage by Liability Policies [Axis] Insurance Coverage by Liability Policies [Domain] Insurance Coverage by Liability Policies [Domain] Insurance Coverage by Liability Policies [Domain] Other liability policies Other Liability Policies [Member] Other Liability Policies [Member] Maritime employer's liability Maritime Employer's Liability [Member] Maritime Employer's Liability [Member] Watercraft pollution policy Watercraft Pollution Policy [Member] Watercraft Pollution Policy [Member] Insurance Coverage [Line Items] Insurance Coverage [Line Items] Insurance Coverage [Line Items] Levels of insurance coverage maintained by the Company Levels of Insurance Coverage Maintained by the Company Levels of Insurance Coverage Maintained by the Company Amount in excess of primary insurance coverage Additional Coverage in Excess of Primary Insurance Coverage Additional Coverage in Excess of Primary Insurance Coverage Primary limit of insurance coverage Primary Limit of Insurance Coverage Primary Limit of Insurance Coverage Accrual for self-insurance liabilities Accrued Insurance, Current Risks and Uncertainties [Abstract] Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer concentration risk Customer Concentration Risk [Member] Customer by Type [Axis] Customer by Type [Axis] Customer by Type [Axis] Customer by Type [Domain] Customer by Type [Domain] Customer by Type [Domain] Federal Government Customer Type, Federal [Member] Customer Type, Federal [Member] State Governments Customer Type, State [Member] Customer Type, State [Member] Local Governments Customer Type, Local [Member] Customer Type, Local [Member] Private Companies Customer Type, Private [Member] Customer Type, Private [Member] Major Customers [Axis] Major Customers [Axis] Name of Major Customer [Domain] Name of Major Customer [Domain] U.S. Army Corps of Engineers U.S. Army Corps of Engineers [Member] U.S. Army Corps of Engineers [Member] Private Sector Customer Private Sector Customer [Member] Private Sector Customer [Member] Second Private Sector Customer Second Private Sector Customer [Member] Second Private Sector Customer [Member] Local Port Authority Canaveral Port Authority [Member] Canaveral Port Authority [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Trade and contract retainage receivables Trade and Contract Retainage Receivables [Member] Trade and Contract Retainage Receivables [Member] Contract revenues Sales Revenue, Services, Net [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Trade and retainage receivables Trade Accounts Receivable and Contract Receivable Retainage, Net Trade Accounts Receivable and Contract Receivable Retainage, Net Concentration risk, percentage Concentration Risk, Percentage Contract revenues Contracts Revenue Fair Value Disclosures [Abstract] Fair Value Fair Value Disclosures [Text Block] Accounts receivable Schedules of concentration of risk, by risk factor Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Contractors [Abstract] Contracts in Progress Long-term Contracts or Programs Disclosure [Text Block] Noncontrolling Interest [Abstract] Subsidiaries with Noncontrolling Owners' Interest Noncontrolling Interest Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Treasury Stock Treasury Stock [Member] Additional Paid-In Additional Paid-in Capital [Member] Retained Retained Earnings [Member] Non-controlling Interest Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance, shares Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares Stock-based compensation Share-based Compensation Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Contributions from non-controlling interest Contributions from Noncontrolling Interests Exercise of stock options, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Net income (loss) Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Beginning Balance, shares Treasury stock, shares Organization, Consolidation and Presentation of Financial Statements [Abstract] Description of Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Income Tax Disclosure [Abstract] Schedule of components of income tax expense (benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] State State and Local Jurisdiction [Member] Internal Revenue Service (IRS) Internal Revenue Service (IRS) [Member] Operating Loss Carryforwards [Line Items] Effective income tax rate Effective Income Tax Rate, Continuing Operations Federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate Net operating loss carryforward Operating Loss Carryforwards Cash benefits received from operating loss carrybacks Refunds Received from Application of Operating Loss Carrybacks Refunds Received from Application of Operating Loss Carrybacks Accounts Receivable [Abstract] Receivables [Abstract] Contract receivable retention Accounts receivable, retention to be collected after 2012 Contract Receivable Retainage, Due after Next Twelve Months Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock options Stock Options [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Anti-dilutive stock options Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Earnings Per Share Earnings Per Share [Text Block] Current assets: Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Stockholders' Equity: Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Statement of Cash Flows [Abstract] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Adjustments to reconcile net loss to net cash provided by (used in) Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Deferred financing cost amortization Amortization of Financing Costs Bad debt expense (recoveries) Provision for Doubtful Accounts Deferred income taxes Deferred Income Tax Expense (Benefit) Gain on sale of property and equipment Gain (Loss) on Sale of Property Plant Equipment Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Income tax receivable Increase (Decrease) in Income Taxes Receivable Inventory Increase (Decrease) in Inventories Note receivable Increase (Decrease) in Notes Receivable, Current Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Costs and estimated earnings in excess of billings on uncompleted contracts Increase Decrease in Costs in excess of billings Increase Decrease in Costs in excess of billings Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Income tax payable Increase (Decrease) in Income Taxes Payable Billings in excess of costs and estimated earnings on uncompleted contracts, net Increase (Decrease) in Billing in Excess of Cost of Earnings Deferred revenue Deferred Revenue, Period Increase (Decrease) Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings from Credit Facility Proceeds from Lines of Credit Payments made on borrowings from Credit Facility Repayments of Debt Exercise of stock options Proceeds from Stock Options Exercised Increase in loan costs Payments of Debt Issuance Costs Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosures of cash flow information, cash paid during the period for: Supplemental Cash Flow Information [Abstract] Interest Interest Paid Taxes (net of refunds) Income Taxes Paid, Net Basic: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Diluted: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Common stock options Incremental Common Shares Attributable to Share-based Payment Arrangements Total weighted average shares outstanding assuming dilution Weighted Average Number of Shares Outstanding, Diluted Shares of common stock issued from the exercise of stock options Costs incurred on uncompleted contracts Inventory for Long-term Contracts or Programs, Costs Incurred on Uncompleted Contracts Inventory for Long-term Contracts or Programs, Costs Incurred on Uncompleted Contracts Estimated earnings Inventory for Long-term Contracts or Programs, Estimated Earnings on Uncompleted Contracts Inventory for Long-term Contracts or Programs, Estimated Earnings on Uncompleted Contracts Costs incurred and estimated earnings on uncompleted contracts Inventory for Long-term Contracts or Programs, Gross Less: Billings to date Billed Contracts Receivable Costs and estimated earnings in excess of billings on uncompleted contracts, net Costs in Excess of Billings on Uncompleted Contracts, Net Costs in Excess of Billings on Uncompleted Contracts, Net Billings in excess of costs and estimated earnings on uncompleted contracts Schedule of accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Equipment improvement Equipment Improvement [Member] Equipment Improvement [Member] Automobiles and trucks Vehicles [Member] Building and improvements Building and Building Improvements [Member] Construction equipment Construction Equipment [Member] Construction Equipment [Member] Dredges and dredging equipment Marine Services Equipment [Member] Office equipment Office Equipment [Member] Dry-docking capitalized costs Dry-docking Capitalized Costs [Member] Dry-docking Capitalized Costs [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment useful life Property, Plant and Equipment, Useful Life Contracts in progress Schedule of Long-term Contracts or Programs in Progress [Table Text Block] Schedule of Long-term Contracts or Programs in Progress [Table Text Block] Summary of Significant Accounting Principles Significant Accounting Policies [Text Block] Concentration of Risk and Enterprise Wide Disclosures Concentration Risk Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning balance, January 1 Additions Goodwill, Acquired During Period Ending balance Income Taxes Income Tax Disclosure [Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Depreciable lives of property and equipment Property, Plant and Equipment [Table Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility, Name [Axis] Credit Facility, Name [Axis] Credit Facility, Name [Axis] Credit Facility Name [Domain] Credit Facility Name [Domain] Credit Facility Name [Domain] Amended credit agreement Amended Credit Agreement of 2012 [Member] Amended Credit Agreement of 2012 [Member] Line of Credit, Borrowing Capacity Base Components [Axis] Line of Credit, Borrowing Capacity Base Components [Axis] Line of Credit, Borrowing Capacity Base Components [Axis] Line of Credit, Borrowing Capacity Base Components [Domain] Line of Credit, Borrowing Capacity Base Components [Domain] Line of Credit, Borrowing Capacity Base Components [Domain] Eligible accounts receivable Eligible Accounts Receivable [Member] Eligible Accounts Receivable [Member] Adjusted cash balance Adjusted Cash Balance [Member] Adjusted Cash Balance [Member] Credit Facility, Loan Type [Axis] Credit Facility, Loan Type [Axis] Credit Facility, Loan Type [Axis] Credit Facility, Loan Type [Domain] Credit Facility, Loan Type [Domain] Credit Facility, Loan Type [Domain] Prime rate based Loans Prime Rate Based Loans [Member] Prime Rate Based Loans [Member] Eurodollar Loans Eurodollar Rate Loan [Member] Eurodollar Rate Loan [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Line of Credit [Member] Revolving Credit Facility [Member] Letter of credit Letter of Credit [Member] Swingline loan Swingline Loan [Member] Swingline Loan [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Secured Debt Secured Debt [Member] Revolving Credit Facility, Interest Rate Options [Axis] Revolving Credit Facility, Interest Rate Options [Axis] Revolving Credit Facility, Interest Rate Options [Axis] Revolving Credit Facility, Interest Rate Options [Domain] Revolving Credit Facility, Interest Rate Options [Domain] Revolving Credit Facility, Interest Rate Options [Domain] LIBOR LIBOR [Member] LIBOR [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Long-term Debt, Fair Value Long-term Debt, Fair Value Line of credit facility, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Line of credit facility, additional borrowing capacity Line of Credit Facility, Additional Borrowing Capacity Line of Credit Facility, Additional Borrowing Capacity Line of credit facility, integral multiple of borrowings Line of Credit Facility, Integral Multiple of Borrowings Line of Credit Facility, Integral Multiple of Borrowings Line of credit, current borrowing capacity base components Line of Credit, Current Borrowing Capacity Base Components Line of Credit, Current Borrowing Capacity Base Components Debt instrument, periodic payment, principal Debt Instrument, Periodic Payment, Principal Line of credit facility, minimum net worth Line of Credit Facility, Covenant Terms, Minimum Net Worth Line of Credit Facility, Covenant Terms, Minimum Net Worth Line of credit facility, covenant terms, minimum net worth, incremental amount to base amount, % of current quarter consolidated net income Line of Credit Facility, Covenant Terms, Minimum Net Worth, Incremental Amount to Base Amount, Percentage of Current Quarter Consolidated Net Income Line of Credit Facility, Covenant Terms, Minimum Net Worth, Incremental Amount to Base Amount, Percentage of Current Quarter Consolidated Net Income Line of credit facility, covenant terms, minimum net worth, incremental amount to base amount, % of issuances of equity interests Line of Credit Facility, Covenant Terms, Minimum Net Worth, Incremental Amount to Base Amount, Percentage of Issuances of Equity Interests Line of Credit Facility, Covenant Terms, Minimum Net Worth, Incremental Amount to Base Amount, Percentage of Issuances of Equity Interests Line of credit facility, unused capacity commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Debt instrument, description of variable rate basis Debt Instrument, Description of Variable Rate Basis Line of credit facility, interest rate at period end Line of Credit Facility, Interest Rate at Period End Line of credit facility, interest rate during period Line of Credit Facility, Interest Rate During Period Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Schedule of changes in goodwill Schedule of Goodwill [Table Text Block] Schedule of changes and amortization of finite-lived intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of future amortization expense of acquired finite-lived intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Finite-lived Intangible Assets, Gross [Roll Forward] Finite-lived Intangible Assets, Gross [Roll Forward] Finite-lived Intangible Assets, Gross [Roll Forward] Intangible assets, January 1 Finite-Lived Intangible Assets, Gross Additions Finite-lived Intangible Assets Acquired Total intangible assets, end of period Accumulated Amortization [Roll Forward] Accumulated Amortization [Roll Forward] Accumulated Amortization [Roll Forward] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Current year amortization Amortization of Intangible Assets Total accumulated amortization Net intangible assets, end of period Finite-Lived Intangible Assets, Net Property, Plant and Equipment [Abstract] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Approved and authorized maximum number of shares to be issued Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Options, expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Options, vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Compensation expense related to stock based awards outstanding Allocated Share-based Compensation Expense Options granted during period Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Fair value of options granted during period, per share Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Proceeds received upon exercise of stock options Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options Total unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Share-based compensation cost not yet recognized, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Long-term Debt and Line of Credit Debt Disclosure [Text Block] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Line Items] Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract] Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract] U.S. Federal Federal Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Current Federal Tax Expense (Benefit) Deferred Deferred Federal Income Tax Expense (Benefit) Total Federal Income Tax Expense (Benefit), Continuing Operations State and local State and Local Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Current State and Local Tax Expense (Benefit) Deferred Deferred State and Local Income Tax Expense (Benefit) Total State and Local Income Tax Expense (Benefit), Continuing Operations Total Income Taxes Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Current Income Tax Expense (Benefit) Deferred Total Income Tax Expense (Benefit), Continuing Operations Inventory Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Income Statement [Abstract] Costs of contract revenues Contract Revenue Cost Gross profit (loss) Gross Profit Selling, general and administrative expenses Selling, General and Administrative Expense Income (loss) from operations Operating Income (Loss) Other income (expense) Other Nonoperating Income (Expense) [Abstract] (Loss) gain from sale of assets, net Other income Nonoperating Income (Expense) Interest income Interest Income, Deposits with Financial Institutions Interest expense Interest Expense Other (income) expense, net Other Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax benefit Income Tax Expense (Benefit) Net income (loss) Net loss attributable to noncontrolling interest Net income (loss) Basic loss per share (in dollars per share) Earnings Per Share, Basic Diluted loss per share (in dollars per share) Earnings Per Share, Diluted Shares used to compute income (loss) per share Basic (shares) Diluted (shares) Inventory Inventory Disclosure [Text Block] Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Accrued salaries, wages and benefits Employee-related Liabilities, Current Property taxes Accrual for Taxes Other than Income Taxes, Current Other accrued expenses Other Accrued Liabilities, Current Total accrued liabilities Significant Acquisitions and Disposals by Transaction [Axis] Significant Acquisitions and Disposals by Transaction [Axis] Significant Acquisitions and Disposals, Transaction [Domain] Significant Acquisitions and Disposals, Transaction [Domain] Land Land [Member] Depreciable Assets [Member] Depreciable Assets [Member] Construction in progress Construction in Progress [Member] Property, plant and equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Depreciation expense Depreciation Summary of property and equipment Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Secured Debt West Construction, Inc. West Construction, Inc. [Member] West Construction, Inc. [Member] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value, Disclosure Item Amounts [Domain] Carrying (reported) amount, fair value disclosure Carrying (Reported) Amount, Fair Value Disclosure [Member] Estimate of fair value, fair value disclosure Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Note receivable Financing Receivable, Gross Note receivable, interest rate Note Receivable, Stated Interest Rate Note Receivable, Stated Interest Rate Fair value of earnout Business Acquisition, Contingent Consideration, at Fair Value Fair value of debt Fair value measurement of fixed assets and goodwill on a non-recurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2013 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Three Acquired intangible assets useful life Finite-Lived Intangible Asset, Useful Life