Commitments and Contingencies Disclosure [Abstract] Unapproved change orders Unapproved Change Orders, Amount Revenues related to claims included in costs and estimated earnings in excess of billings Claim Against Uncompleted Contracts Claim against uncompleted contracts. Segment Reporting [Abstract] Results of Operations Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Information Segment Reporting Disclosure [Text Block] Disclosure Customer Contracts Additional Information [Abstract] Disclosure - Customer Contracts - Additional Information [Abstract] Uncompleted Contracts Long-term Contracts or Programs Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Business Segments [Axis] Business Segments [Axis] Segment [Domain] Segment [Domain] Electrical Infrastructure [Member] Electrical Infrastructure [Member] Electrical infrastructure. Oil Gas & Chemical [Member] Oil Gas And Chemical [Member] Oil gas & chemical. Storage Solutions [Member] Storage Solutions [Member] Storage solutions. Industrial [Member] Industrial [Member] Industrial. Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill, Gross Cumulative impairment loss Goodwill, Impaired, Accumulated Impairment Loss Goodwill Goodwill Goodwill [Roll Forward] Goodwill [Roll Forward] Net balance at June 30, 2012 Purchase of Pelichem Goodwill, Acquired During Period Translation adjustment Goodwill, Translation Adjustments Net balance at December 31, 2012 Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, less allowances (December 31, 2012-$785 and June 30, 2012-$1,201) Accounts Receivable, 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 Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance, Current Inventories Inventory, Net Income taxes receivable Income Taxes Receivable, Current Other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment at cost: Property, Plant and Equipment, Gross [Abstract] Land and buildings Buildings and Improvements, Gross Construction equipment Machinery and Equipment, Gross Transportation equipment Transportation Equipment Gross Transportation Equipment Gross Office equipment and software Furniture and Fixtures, Gross Construction in progress Construction in Progress, Gross Property, plant and equipment at cost, gross Property, Plant and Equipment, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, plant and equipment at cost, net Property, Plant and Equipment, Net Goodwill Other intangible assets 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] Accounts payable Accounts Payable, Current Billings on uncompleted contracts in excess of costs and estimated earnings Billings in Excess of Cost Accrued wages and benefits Employee-related Liabilities, Current Accrued insurance Accrued Insurance, Current Income taxes payable Accrued Income Taxes, Current Other accrued expenses Other Liabilities, Current Total current liabilities Liabilities, Current Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Long term debt Long-term Debt, Excluding Current Maturities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock-$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of December 31, 2012, and June 30, 2012 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Stockholders' Equity before Treasury Stock, Total Stockholders' Equity before Treasury Stock Less: Treasury stock, at cost - 1,869,558 shares as of December 31, 2012, and 2,141,990 shares as of June 30, 2012 Treasury Stock, Value Total stockholders' equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Intangible Assets Including Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Earnings Per Share [Abstract] Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Antidilutive Securities Excluded from the Calculation of Diluted EPS Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Statement of Cash Flows [Abstract] Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Gross Payments of Debt Restructuring Costs Payments of Debt Restructuring Costs Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided (used) by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Deferred income tax Deferred Income Tax Expense (Benefit) Gain on sale of property, plant and equipment Gain (Loss) on Sale of Property Plant Equipment Allowance for uncollectible accounts Provision for Doubtful Accounts Stock-based compensation expense Share-based Compensation Other Other Noncash Income (Expense) Changes in operating assets and liabilities increasing (decreasing) cash: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Costs and estimated earnings in excess of billings on uncompleted contracts Increase Decrease In Costs And Estimated Earnings In Excess Of Billings On Uncompleted Contracts Increase Decrease In Costs And Estimated Earnings In Excess Of Billings On Uncompleted Contracts Inventories Increase (Decrease) in Inventories Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Billings on uncompleted contracts in excess of costs and estimated earnings Increase (Decrease) in Billing in Excess of Cost of Earnings Accrued expenses Increase (Decrease) in Accrued Liabilities Net cash provided (used) by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisition of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from asset sales Proceeds from Sale of Productive Assets Net cash used by investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Issuances of common stock Proceeds from Issuance of Common Stock Capital lease payments Repayments of Long-term Capital Lease Obligations Excess tax benefit of exercised stock options and vesting of deferred shares Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities Advances under credit agreement Proceeds from Long-term Lines of Credit Repayments of advances under credit agreement Repayments of Long-term Lines of Credit Treasury shares purchased by Employee Stock Purchase Plan Proceeds from Stock Plans Open market purchase of treasury shares Payments for Repurchase of Common Stock Other treasury share purchases Payments for Repurchase of Other Equity Net cash provided (used) by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Net decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Income taxes Income Taxes Paid, Net Interest Interest Paid Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Purchases of property, plant and equipment on account Capital Expenditures Incurred but Not yet Paid Earnings per Common Share Earnings Per Share [Text Block] Income Statement [Abstract] Revenues Sales Revenue, Services, Net Cost of revenues Cost of Services Gross profit Gross Profit Selling, general and administrative expenses Selling, General and Administrative Expense Operating income Operating Income (Loss) Other income (expense): Other Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Interest income Investment Income, Interest Other Other Nonoperating Income (Expense) Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for federal, state and foreign income taxes Income Tax Expense (Benefit) Net income Basic earnings per common share (US$ per share) Earnings Per Share, Basic Diluted earnings per common share (US$ per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (shares) Weighted Average Number of Shares Outstanding, Basic Diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Intellectual Property [Member] Intellectual Property [Member] Intellectual property. Customer Based [Member] Customer Based [Member] Customer based member. Other [Member] Other Intangible Assets [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Useful Life Finite-Lived Intangible Asset, Useful Life Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amount Finite-Lived Intangible Assets, Net Indefinite Trade Names Indefinite-Lived Trade Names Total intangible assets, gross carrying amount Intangible Assets Gross Excluding Goodwill Intangible assets gross excluding goodwill. Total intangible assets, accumulated amortization Intangible Assets Accumulated Amortization Excluding Goodwill Intangible assets accumulated amortization excluding goodwill. Total intangible assets, net carrying amount Customer Contracts [Table] Customer Contracts [Table] Customer Contracts [Table] Major Customers [Axis] Major Customers [Axis] Name of Major Customer [Domain] Name of Major Customer [Domain] S.M. Electric Company S.M. Electric Company [Member] S.M. Electric Company [Member] Western Canada Aboveground Storage Tank Project Western Canada Aboveground Storage Tank Project [Member] Western Canada Aboveground Storage Tank Project [Member] Customer Contracts [Line Items] Customer Contracts [Line Items] [Line Items] for Customer Contracts [Table] Billings in accounts receivable to be collected within one year Contract Receivable Retainage, Due in Remainder of Fiscal Year Contract retentions collectible beyond one year Costs in Excess of Billings on Uncompleted Contracts or Programs Expected to be Collected after One Year Estimate of the remaining amount to be collected Contracts Receivable, Claims and Uncertain Amounts Additional claim for amounts due under related contract Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected in Next Rolling Twelve Months Decrease in operating income due to change in estimate on project Change In Accounting Estimate, Financial Effect, Operating Income Change In Accounting Estimate, Financial Effect, Operating Income Decrease in net income due to change in estimate on project Change In Accounting Estimate, Financial Effect, Net Income Change In Accounting Estimate, Financial Effect, Net Income Decrease in diluted earnings per common share due to change in estimate on project Change In Accounting Estimate, Financial Effect, Diluted Earnings Per Share Change In Accounting Estimate, Financial Effect, Diluted Earnings Per Share Accrued loss included in billings in excess of costs Billings in Excess of Cost, Current Statement Condensed Consolidated Balance Sheets [Abstract] Statement Condensed Consolidated Balance Sheets [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Statement [Line Items] Statement [Line Items] Accounts receivable, allowances Allowance for Doubtful Accounts Receivable, Current Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares Costs incurred and estimated earnings recognized on uncompleted contracts Uncompleted Contracts Costs Incurred And Estimated Earnings Recognized Uncompleted contracts costs incurred and estimated earnings recognized. Billings on uncompleted contracts Uncompleted Contracts Billings Uncompleted contracts billings. Total Uncompleted Contracts Net Uncompleted contracts. Shown on balance sheet as: Balance Sheet Balance sheet. Total Costs in Excess of Billings on Uncompleted Contracts or Programs Impairment charge Goodwill, Impairment Loss Amortization expense Amortization of Intangible Assets 2013 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Five Customer Relationships [Member] Customer Relationships [Member] Other Intangible Assets [Member] Fair value of amortizing intangible assets Finite-lived Intangible Assets, Fair Value Disclosure Weighted average amortization period of intangible assets Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Debt Disclosure [Abstract] Availability Under the Senior Credit Facility Schedule of Line of Credit Facilities [Table Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) [Member] Balances, beginning Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Exercise of stock options (21,600 and 15,400 shares for six month period ended December 31, 2012 and 2011, respectively) Stock Issued During Period, Value, Stock Options Exercised Tax effect of exercised stock options and vesting of deferred shares Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Issuance of deferred shares (350,048 and 161,222 shares for six month period ended December 31, 2012 and 2011, respectively)) Adjustments to Additional Paid in Capital, Other Employee Stock Purchase Plan (2,055 and 2,636 shares for six month period ended December 31, 2012 and 2011, respectively) Stock Issued During Period, Value, Employee Stock Purchase Plan Open market purchase of treasury shares (886,503 shares) Treasury Stock, Value, Acquired, Cost Method Other treasury share purchases (101,271 and 45,143 shares for six month period ended December 31, 2012 and 2011, respectively) Other Treasury Share Purchases Other treasury share purchases. Stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Balances, ending Debt Debt Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] All Other Segments [Member] All Other Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Gross revenues Revenues Inter-segment revenues Segment Reporting Information, Intersegment Revenue Consolidated revenues Gross profit Operating income Segment assets Business Combinations [Abstract] Schedule of Preliminary Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Weighted average shares outstanding - basic (shares) Basic EPS (US$ per share) Earnings Per Share, Diluted [Abstract] Earnings Per Share, Diluted [Abstract] Dilutive stock options Incremental Common Shares Attributable to Share-based Payment Arrangements Dilutive nonvested deferred shares Incremental Common Shares Attributable to Nonvested Shares with Forfeitable Dividends Diluted weighted average shares (shares) Diluted EPS (US$ per share) Exercise of stock options, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of deferred shares, shares Deferred Shares Issued Deferred Shares Issued Employee Stock Purchase Plan, shares Stock Issued During Period, Shares, Employee Stock Purchase Plans Open market purchase of treasury shares, shares Treasury Stock, Shares, Acquired Other treasury shares purchases, shares Other Treasury Shares Acquired Other treasury shares acquired. Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Pelichem Industrial Cleaning Services, LLC [Member] Pelichem Industrial Cleaning Services, LLC [Member] Pelichem Industrial Cleaning Services, LLC [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Current assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets Property, plant, and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Tax deductible goodwill Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangibles Total assets acquired Business Combinations, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Business Combinations, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Current liabilities Business Combination, Recognized Identifable Assets Acquired And Liabilities Assumed, Current Liabilities Business Combination, Recognized Identifable Assets Acquired And Liabilities Assumed, Current Liabilities Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Estimated working capital adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Working Capital Adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Working Capital Adjustment Purchase price before working capital adjustment Business Combination, Consideration Transferred Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] [Domain] for Variable Rate [Axis] CDOR Rate [Member] CDOR Rate [Member] CDOR Rate [Member] Canadian Prime Rate [Member] Canadian Prime Rate [Member] Canadian Prime Rate [Member] Acquired Indefinite-lived Intangible Assets [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] Credit Agreement Term Credit Agreement Term Credit Agreement Term Senior secured revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Senior Leverage Ratio, Maximum Senior Leverage Ratio Maximum Senior leverage ratio maximum. Senior Leverage Ratio, Minimum Senior Leverage Ratio Minimum Senior leverage ratio minimum. Fixed Charge Coverage Ratio, Maximum Fixed Charge Coverage Ratio Maximum Fixed charge coverage ratio maximum. Fixed Charge Coverage Ratio, Minimum Fixed Charge Coverage Ratio Minimum Fixed charge coverage ratio minimum. Limit on asset dispositions Amount Of Limit On Asset Dispositions Amount of limit on asset dispositions. Additional Margin on alternate base rate loans, Minimum Line Of Credit Basis Spread On Alternate Base Rate Minimum Line of credit basis spread on alternate base rate minimum. Additional Margin on alternate base rate loans, Maximum Line Of Credit Basis Spread On Alternate Base Rate Maximum Line of credit basis spread on alternate base rate maximum. Additional Margin on LIBOR loans, Minimum Line Of Credit Basis Spread On London Interbank Offered Rate Minimum Line of credit basis spread on London interbank offered rate minimum. Additional Margin on LIBOR loans, Maximum Line Of Credit Basis Spread On London Interbank Offered Rate Maximum Line of credit basis spread on London interbank offered rate maximum. Sublimit on Canadian dollar borrowings Amount Of Limit On Canadian Dollar Borrowings Amount of limit on Canadian dollar borrowings. Additional Margin on CDOR loans, Minimum Line Of Credit Basis Spread On Canadian Deposit Offered Rate Minimum Line of credit basis spread on Canadian deposit offered rate minimum. Additional Margin on CDOR loans, Maximum Line Of Credit Basis Spread On Canadian Deposit Offered Rate Maximum Line of credit basis spread on Canadian deposit offered rate maximum. Additional Margin on Canadian prime rate loans, Minimum Line Of Credit Basis Spread On Canadian Prime Rate Minimum Line of credit basis spread on Canadian prime rate minimum. Additional Margin on Canadian prime rate loans, Maximum Line Of Credit Basis Spread On Canadian Prime Rate Maximum Line of credit basis spread on Canadian prime rate maximum. CDOR Rate description Line Of Credit Facility Canadian Deposit Offered Rate Description Line of credit facility Canadian deposit offered rate description. Variable rate basis Debt Instrument, Description of Variable Rate Basis Basis spread on variable rate basis Debt Instrument, Basis Spread on Variable Rate Canadian prime rate description Line Of Credit Facility Canadian Prime Rate Description Line of credit facility Canadian prime rate description. Unused Credit Facility Fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Maximum limit of consolidated funded indebtedness Maximum Limit Of Consolidated Funded Indebtedness Maximum limit of consolidated funded indebtedness. Consolidated EBITDA as defined in the Credit Agreement Consolidated Earnings Before Interest Taxes Depreciation And Amortization Per Credit Agreement Consolidated earnings before interest taxes depreciation and amortization per credit. Line Of Credit Facility Maximum Borrowing Capacity After Consideration Of Capacity Constraint Line Of Credit Facility Maximum Borrowing Capacity After Consideration Of Capacity Constraint Line of credit facility maximum borrowing capacity after consideration of capacity constraint. Consolidated funded indebtedness Consolidated Funded Indebtedness Consolidated Funded Indebtedness Oustanding borrowings included in Consolidated Funded Indebtedness Line of Credit Facility, Amount Outstanding Non-workers compensation related letters of credit Letters of Credit Outstanding, Amount Acquisitions Business Combination Disclosure [Text Block] Senior credit facility Capacity constraint due to the Senior Leverage Ratio Capacity Constraint Due To Senior Leverage Ratio Capacity constraint due to the Senior Leverage Ratio. Capacity under the credit facility Borrowings outstanding Letters of credit subject to the credit facility Letters Of Credit Subject To Credit Facility Letters Of Credit Subject To Credit Facility. Availability under the senior credit facility Line of Credit Facility, Remaining Borrowing Capacity Text Block [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Statement of Other Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Carrying Value of Goodwill by Segment Schedule of Goodwill [Table Text Block] Carrying Value of Other Intangible Assets Schedule Of Intangible Assets Excluding Goodwill Table [Text Block] Schedule of intangible assets excluding goodwill. Gross and Net Amount of Uncompleted Contracts Gross And Net Amount Of Uncompleted Contracts Table [Text Block] Gross and net amount of uncompleted contracts. Income Taxes Income Tax, Policy [Policy Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] 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 [Member] Stock Options [Member] Nonvested Deferred Shares [Member] Nonvested Deferred Shares [Member] Nonvested Deferred Shares [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Total antidilutive securities Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount