CONSOLIDATED BALANCE SHEETS (Parenthetical) $ in Thousands	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares
Statement of Financial Position [Abstract]
Trade receivables, allowance for doubtful accounts \| $	$ 8,464	$ 9,554
Ordinary shares, authorized	125,000,000	125,000,000
Ordinary shares, issued	74,367,450	73,455,167
Ordinary shares, outstanding	61,769,554	60,925,954
Treasury shares	12,597,896	12,529,213

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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-SubTopic 10
-Section 50
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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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