Percentage of eligible earnings to purchase common stock through the employee stock purchase plan Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Employee Subscription Rate Adjustments to reconcile net earnings to cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Income taxes receivable Prepaid Taxes Goodwill acquired Goodwill, Acquired During Period Work in process Inventory, Work in Process, Gross Statistical Measurement [Domain] Statistical Measurement [Domain] Cover page. Cover [Abstract] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash income taxes paid Income Taxes Paid, Excluding Taxes Associated With Gain On Disposition Of Business Income Taxes Paid, Excluding Taxes Associated With Gain On Disposition Of Business Trading Symbol Trading Symbol Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Equity method investment, ownership percentage Equity Method Investment, Ownership Percentage All Trading Arrangements All Trading Arrangements [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Non-NEOs Non-NEOs [Member] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Tax benefit recognized in net earnings Share-Based Payment Arrangement, Expense, Tax Benefit Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Dividends declared (in usd per share) Common Stock, Dividends, Per Share, Declared Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Change in unbilled receivables Contract With Customer, Asset, Net, Increase (Decrease) Contract With Customer, Asset, Net, Increase (Decrease) Unpatented technology Unpatented Technology [Member] Equity investment Equity Method Investments Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Cash received from exercise of options Proceeds from Stock Options Exercised Fair Value Fair Value Disclosures [Text Block] Award Timing Disclosures [Line Items] Investment, Name [Domain] Investment, Name [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Goodwill [Line Items] Goodwill [Line Items] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Deferred revenue Contract with Customer, Liability, Current Other assets Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number Assets subject to amortization, Cost Finite-Lived Intangible Assets, Gross Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Operating Segments Operating Segments [Member] Cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Patents and other protective rights Patents [Member] Treasury stock Treasury Stock, Common [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Equity Components [Axis] Equity Components [Axis] Award Timing Method Award Timing Method [Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trade names Trade Names [Member] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Insider Trading Policies and Procedures [Line Items] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Compensation Amount Outstanding Recovery Compensation Amount Total assets: Assets, Excluding Assets Held-For-Sale Assets, Excluding Assets 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Current Antidilutive stock-based awards (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Credit Facility [Domain] Credit Facility [Domain] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Non-recurring Software Related, Non-recurring [Member] Software Related, Non-recurring Goodwill Balance at beginning of period Balance at end of period Goodwill Consolidation Items [Axis] Consolidation Items [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Inventories Inventory Disclosure [Text Block] Net earnings Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Product and Service [Domain] Product and Service [Domain] Stock Options Share-Based Payment Arrangement, Option [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Weighted average grant date fair value per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Depreciation and amortization of property, plant and equipment Depreciation Other, net Proceeds from (Payments for) Other Financing Activities Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Income taxes payable Accrued Income Taxes, Current Security Exchange Name Security Exchange Name Award Type [Axis] Award Type [Axis] Capital expenditures Capital expenditures Payments to Acquire Other Productive Assets Property, plant and equipment, net Property, Plant and Equipment, Net Total liabilities Liabilities Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [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] Weighted average useful life of finite-lived intangible assets (in years) Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Expiration Date Trading Arrangement Expiration Date Cash flows used in investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Other Goodwill, Other Increase (Decrease) Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Other accrued liabilities Increase (Decrease) in Other Accrued Liabilities Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Raw materials and supplies Inventory, Raw Materials and Supplies, Gross Technology Enabled Products Technology Enabled Products Segment [Member] Technology Enabled Products Segment Equity Method Investments Equity Method Investments [Roll Forward] Equity Method Investments Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Acquisitions of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Diluted (in shares) Diluted shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Total stockholders’ equity Balance at beginning of period Balance at end of period Equity, Attributable to Parent Litigation Case [Axis] Litigation Case [Axis] Interest expense, net Interest Expense, Nonoperating Schedule of Goodwill Schedule of Goodwill [Table Text Block] Selling, general and administrative expenses SG&A expenses Selling, General and Administrative Expense Accounts payable Accounts Payable Total other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Document Fiscal Period Focus Document Fiscal Period Focus All Executive Categories All Executive Categories [Member] Common stock awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Change in net contract assets/(liabilities) Increase (Decrease) In Contract With Customer, Asset (Liability) Increase (Decrease) In Contract With Customer, Asset (Liability) ASSETS: Assets [Abstract] Expected dividend yield (%) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Document Type Document Type Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Schedule of Segment Reporting Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Restricted stock awards vested during period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Risk-free interest rate (%) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Assets not subject to amortization Indefinite-Lived Intangible Assets (Excluding Goodwill) Proceeds from stock-based compensation, net Proceeds from stock based compensation, net The cash inflow associated with the amount received from holders exercising their stock options, offset by the cash outflow paid by the company to cover an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. Maximum Maximum [Member] Amortization of intangible assets Amortization of Intangible Assets Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Assets subject to amortization, Net book value Finite-Lived Intangible Assets, Net Schedule of Weighted Average Assumptions Used to Value Option Grants Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Business Acquisitions Business Combination Disclosure [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Discount on the average closing price for the employee stock purchase plan Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Purchase Date Statistical Measurement [Axis] Statistical Measurement [Axis] Effect of potential common stock: Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 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[Text Block] Customer related intangibles Customer Relationships [Member] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Unbilled receivables Unbilled Receivables, Current Diluted (in dollars per share) Earnings Per Share, Diluted Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Weighted Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Deferred revenue Increase (Decrease) in Contract with Customer, Liability Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Award vesting rights, percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Non-cash stock compensation Share-Based Payment Arrangement, Noncash Expense Equity Method Investments Equity Method Investments [Member] Income taxes Income Tax Expense (Benefit) Unsecured Credit Facility Unsecured Credit Facility [Member] Unsecured Credit Facility Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Net revenues Net revenues Total Revenue Revenue from Contract with Customer, Excluding Assessed Tax Other expense, net Nonoperating Income (Expense) Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Federal tax attributes Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Cash used in investing activities Net Cash Provided by (Used in) Investing Activities Income from operations Operating Income (Loss) Business Acquisition [Line Items] Business Acquisition [Line Items] Total liabilities and stockholders’ equity Liabilities and Equity Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Change in Fair Value for the Equity Investment Equity Method Investments [Table Text Block] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Additional paid-in capital Additional Paid in Capital Indicor Indicor [Member] Indicor Cash dividends to stockholders Payments of Dividends Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Individual: Individual [Axis] Restricted stock activity Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Accumulated other comprehensive loss AOCI Attributable to Parent [Member] Remaining performance obligations, expected timing of satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Expected option life (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Inventories, net Inventories, net Inventory, Net Product and Service [Axis] Product and Service [Axis] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity Address, State or Province Entity Address, State or Province Statement [Line Items] Statement [Line Items] Operating profit Segment Operating Profit The net result for the period of deducting operating expenses from operating revenues before Corporate expenses. Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Recurring Software Related, Recurring [Member] Software Related, Recurring Aggregate purchase price Business Combination, Consideration Transferred LIABILITIES AND STOCKHOLDERS’ EQUITY: Liabilities and Equity [Abstract] Accounts receivable Increase (Decrease) in Accounts and Other Receivables Restatement Determination Date Restatement Determination Date Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Deferred revenue - non-current Contract with Customer, Liability, Noncurrent Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Capitalized software expenditures Capitalized Computer Software, Additions L. Neil Hunn [Member] L. Neil Hunn Segments [Axis] Segments [Axis] Accrued compensation Deferred Compensation Cash-Based Arrangements, Liability, Current Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Exercise Price Award Exercise Price Weighted Average Shares Outstanding Earnings Per Share [Text Block] Arrangement Duration Trading Arrangement Duration Proceeds from issuance of shares under employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Subsequent Event Subsequent Event [Member] Stock option exercises Stock Issued During Period, Value, Stock Options Exercised Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Weighted-average grant date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Segments [Domain] Segments [Domain] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] PowerPlan, Inc PowerPlan, Inc [Member] PowerPlan, Inc All Individuals All Individuals [Member] PEO PEO [Member] Name Trading Arrangement, Individual Name Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Other intangible assets, net Intangible assets, net book value Intangible Assets, Net (Excluding Goodwill) Treasury stock Treasury Stock, Common, Value Equity investments (gain) loss, net Equity investments (gain) loss, net Income (Loss) from Equity Method Investments Capitalized software expenditures Payments to Develop Software Net contract assets/(liabilities) Contract With Customer, Net Asset (Liability) Contract With Customer, Net Asset (Liability) Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Change in deferred revenue - current Contract With Customer, Liability, Billings In-Excess Of Revenues, And Customer Deposits, Increase (Decrease) Contract With Customer, Liability, Billings In-Excess Of Revenues, And Customer Deposits, Increase (Decrease) Local Phone Number Local Phone Number Intangible assets, cost Intangible Assets, Gross (Excluding Goodwill) Borrowings (payments) under revolving line of credit, net Proceeds from (Repayments of) Lines of Credit Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Deferred taxes Deferred Income Tax Liabilities, Net Expected volatility (%) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Changes in operating assets and liabilities, net of acquired businesses: Increase (Decrease) in Operating Capital [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Treasury stock sold Stock Issued During Period, Value, Treasury Stock Reissued Common stock Common Stock [Member] Measure: Measure [Axis] Stock-based compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Asset Class [Domain] Asset Class [Domain] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Line of Credit Line of Credit [Member] Employee stock options granted during the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Treasury stock sales Proceeds from Sale of Treasury Stock Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Segment Reporting [Abstract] Segment Reporting [Abstract] Entity Central Index Key Entity Central Index Key Network Software Network Software Segment [Member] Network Software Segment Damages sought by plaintiff Loss Contingency, Damages Sought, Value Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income tax provision Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Reportable Segments Segment Reporting Disclosure [Text Block] Current portion of long-term debt, net Long-Term Debt, Current Maturities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Restricted Stock Awards Restricted Stock [Member] Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Deferred commissions Capitalized Contract Cost, Net Title Trading Arrangement, Individual Title Statement [Table] Statement [Table] Consolidation Items [Domain] Consolidation Items [Domain] City Area Code City Area Code Damages sought by plaintiff after tax Loss Contingency, Damages Sought, Value, After Tax Loss Contingency, Damages Sought, Value, After Tax Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Senior Notes Senior Notes [Member] Long-term debt, net of current portion Long-Term Debt, Excluding Current Maturities Other identifiable intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Fair value per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Other Intangible Assets Other Intangible Assets [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Remaining performance obligations, percentage Revenue, Remaining Performance Obligation, Percentage Net earnings per share: Earnings Per Share [Abstract] Retained earnings Retained Earnings (Accumulated Deficit) Currency translation adjustments Goodwill, Translation and Measurement Period Adjustments Inventories Increase (Decrease) in Inventories Unallocated corporate general and administrative expenses General and Administrative Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Credit Facility [Axis] Credit Facility [Axis] Dividends declared Dividends, Common Stock, Cash Amendment Flag Amendment Flag Long-term debt, fair value Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and other amortization Depreciation, Depletion and Amortization Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Gross profit Gross Profit Foreign currency translation adjustments Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Fair Value as of Grant Date Award Grant Date Fair Value Product Revenue Product Revenue [Member] Product Revenue Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Total Software Revenue Software Related [Member] Software Related Weighted average vest date fair value per share (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Vest Date Fair Value The weighted average fair value as of vest dates pertaining to a share-based award plan other than a stock option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement. MuniLink MuniLink [Member] MuniLink Schedule of Other Intangible Assets - Not Subject to Amortization Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Change in deferred revenue - non-current Contract With Customer, Liability, Noncurrent, Increase (Decrease) Contract With Customer, Liability, Noncurrent, Increase (Decrease) Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Unbilled receivables Unbilled Contracts Receivable Technology Technology-Based Intangible Assets [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Stock-Based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Basis of Presentation Consolidation, Policy [Policy Text Block] Restatement Determination Date: Restatement Determination Date [Axis] CentralReach CentralReach [Member] CentralReach Performance/market-based Performance / Market - Based [Member] Performance / Market - Based Title of 12(b) Security Title of 12(b) Security Common stock Common Stock, Value, Issued Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Other Payments for (Proceeds from) Other Investing Activities Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Cash flows from (used in) financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Finished products Inventory, Finished Goods, Gross Employee Stock Purchase Plan Employee Stock [Member] Credit facility outstanding Line of Credit Facility, Fair Value of Amount Outstanding Basic (in dollars per share) Earnings Per Share, Basic Accounts payable Increase (Decrease) in Accounts Payable Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Goodwill [Table] Goodwill [Table] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Loss Contingency [Abstract] Loss Contingency [Abstract] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Total assets Assets Restricted stock awards granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Other liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and contingencies (Note 9) Commitments and Contingencies Termination Date Trading Arrangement Termination Date Other, net Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net 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] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Entity Address, City or Town Entity Address, City or Town Debt Instrument [Axis] Debt Instrument [Axis] Stock-based compensation Share-Based Payment Arrangement, Expense Net earnings Net earnings Net earnings Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Reoccurring Software Related, Reoccurring [Member] Software Related, Reoccurring Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Business Acquisition [Axis] Business Acquisition [Axis] Schedule of Other Intangible Assets - Subject to Amortization Schedule of Finite-Lived Intangible Assets [Table Text Block] Deferred revenue – current Contract With Customer, Liability, Deferred Revenue, Billings In-Excess Of Revenues, And Customer Deposits, Current Contract With Customer, Liability, Deferred Revenue, Billings In-Excess Of Revenues, And Customer Deposits, Current Change in fair value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Revenues from Contracts Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Name Forgone Recovery, Individual Name Unbilled receivables Increase (Decrease) In Unbilled Receivables, Current Increase (Decrease) In Unbilled Receivables, Current Document Period End Date Document Period End Date Inventory reserves Inventory Valuation Reserves Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Asset Class [Axis] Asset Class [Axis] Insider Trading Arrangements [Line Items] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cost of sales Cost of Revenue Revenue recognized from contract liability balance Contract with Customer, Liability, Revenue Recognized Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Litigation Case [Domain] Litigation Case [Domain] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained earnings Retained Earnings [Member] Amortization of deferred financing costs Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Basic (in shares) Basic shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Entity Filer Category Entity Filer Category Remaining performance obligations Revenue, Remaining Performance Obligation, Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Company Selected Measure Name Company Selected Measure Name