CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (UNAUDITED) (Parenthetical) $ in Thousands	Mar. 31, 2020 € / shares	Mar. 31, 2020 USD ($) shares	Dec. 31, 2019 € / shares	Dec. 31, 2019 USD ($) shares
Statement of Financial Position [Abstract]
Trade receivables, allowances \| $		$ 23,084		$ 16,068
Common shares, par value (in Euro per share) \| € / shares	€ 0.025		€ 0.025
Common shares authorized (in shares)		66,202,881		66,197,181
Common shares issued (in shares)		66,202,881		66,197,181
Common shares outstanding (in shares)		66,202,881		66,197,181
Treasury stock (in shares)		4,533,650		3,903,673

Amount of allowance for credit loss on accounts receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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