Significant Accounting Policies and Recent Accounting Pronouncements [Abstract] Significant Accounting Policies / Recent Accounting Pronouncements [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Income Statement [Abstract] Statement [Table] Statement [Table] Statement, Scenario [Axis] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] Revenues Revenues [Abstract] Products Sales Revenue, Goods, Net On-Site services Sales Revenue, Services, Net Total Revenue, Net Cost of sales Cost of Goods and Services Sold [Abstract] Products Cost of Goods Sold On-Site services Cost of Services Total Cost of Goods and Services Sold Gross profit Gross Profit Selling, general & administrative expenses Selling, General and Administrative Expense Intangibles amortization Amortization of Intangible Assets Operating income Operating Income (Loss) Interest expense (income), net Interest Income (Expense), Net Other expenses (income), net Other Nonoperating Income (Expense) Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income Net Income (Loss) Attributable to Parent Earnings per common share Basic Earnings Per Share, Basic Diluted Earnings Per Share, Diluted Weighted-average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted Dividends per share Common Stock, Dividends, Per Share, Cash Paid Organization, Consolidation and Presentation of Financial Statements [Abstract] Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures Fair Value Disclosures [Text Block] Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets Intangible Assets Disclosure [Text Block] Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Goodwill [Abstract] Goodwill Abstract Goodwill Goodwill Disclosure [Text Block] Comprehensive Income and AOCI [Abstract] Comprehensive Income and AOCI [Abstract] Comprehensive Income and AOCI Comprehensive Income (Loss) Note [Text Block] Statement of Financial Position [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Assets Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowance for doubtful accounts of $6,424 and $7,121 Accounts Receivable, Net, Current Inventories, net Inventory, Net Costs/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 Other assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangibles, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Assets Liabilities Liabilities [Abstract] Accounts payable Accounts Payable, Current Accrued compensation and benefits Employee-related Liabilities, Current Deferred revenue Deferred Revenue, Current Billings in excess of costs/estimated earnings on uncompleted contracts Billings in Excess of Cost Income taxes Accrued Income Taxes, Current Other liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Stockholders' Equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock authorized 5,000, par value $1.00, none issued Preferred Stock, Value, Issued Common stock authorized 100,000, par value $.001, 17,680 and 17,918 shares outstanding, 25,730 and 25,561 shares issued 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), Net of Tax Treasury stock, at cost 8,050 and 7,643 shares Treasury Stock, Value Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Statement of Cash Flows [Abstract] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash provided by (used for) operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Intangibles amortization and depreciation Depreciation, Depletion and Amortization Loss (gain) on sale of property Gain (Loss) on Sale of Property Deferred taxes Deferred Income Tax Expense (Benefit) Stock compensation expense Share-based Compensation Change in fair value of interest-rate swaps Unrealized Gain (Loss) on Derivatives Changes in operating assets and liabilities (net of acquisitions) Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories, net Increase (Decrease) in Inventories Costs/estimated earnings in excess of billings on uncompleted contracts Increase (Decrease) in Unbilled Receivables All other assets Increase (Decrease) in Other Current Assets Billings in excess of costs/estimated earnings on uncompleted contracts Increase (Decrease) in Billing in Excess of Cost of Earnings All other liabilities Increase (Decrease) in Other Current Liabilities Net cash provided by (used for) operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Capital disposals Proceeds from Sale of Property, Plant, and Equipment Acquisition of businesses (payments)/recoveries Payments to Acquire Businesses Net of Cash Acquired Excluding Previous Acquisition Payments to Acquire Businesses Net of Cash Acquired Excluding Previous Acquisition. Prior merger-related (payments)/recoveries Payments for (Proceeds from) Previous Acquisition Net cash provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from borrowings Proceeds from Issuance of Long-term Debt Repayment of borrowings Repayments of Long-term Debt Deferred financing costs Payments of Financing Costs Purchase of treasury stock Payments for Repurchase of Common Stock Proceeds from the exercise of stock options Proceeds from Stock Options Exercised Payment of dividends Payments of Dividends Net cash provided by (used for) financing activities Net Cash Provided by (Used in) Financing Activities Foreign currency exchange impact on cash Effect of Exchange Rate on Cash and Cash Equivalents Increase / (decrease) 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 Cash Flow Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Cash paid for income taxes Income Taxes Paid Non-cash financing activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Dividends payable Dividends Payable, Amount Capital leases Capital Lease Obligations Incurred Segment Reporting [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Indebtedness Debt 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] Document and Entity Information Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Well Known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Consolidated Balance Sheets (Parentheticals) [Abstract] Consolidated Balance Sheets (Parentheticals) [Abstract] Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding 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 Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares