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of Shares Outstanding, Diluted Schedule of accounts receivables and unbilled revenue, and unbilled services and unearned revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Ordinary shares which have been reserved for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Revenue Accounts receivable, unbilled revenue (contract assets) and unearned revenue or payments on account (contract liabilities) Revenue from Contract with Customer [Text Block] Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Weighted Average Remaining Contractual Life Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Additional paid-in capital 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(Decrease) In Contract With Customer, Liability, Gross, Current, Percent Increase (Decrease) In Contract with Customer, Liability, Gross, Current, Percent Equity Component [Domain] Equity Component [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Basic (in shares) Weighted average number of ordinary shares outstanding for basic net income per ordinary share (in shares) Weighted Average Number of Shares Outstanding, Basic Income from operations Income from operations Operating Income (Loss) Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Statement [Line Items] Statement [Line Items] Change in unbilled services (unbilled revenue) Increase in unbilled services (unbilled revenue) Increase (Decrease) In Contract With Customer, Asset, Gross, Current Increase (Decrease) In Contract With Customer, Asset, Gross, Current Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Customer relationships Customer Relationships [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Other restructuring costs Other Restructuring Costs Other Liabilities