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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Allowances for doubtful accounts (in dollars)	$ 6,631	$ 15,982
Ordinary share, par value (in dollars per share)	$ 0.00375	$ 0.00375
Ordinary share, authorized shares	250,000,000	250,000,000
Ordinary share, shares issued	41,123,000	40,907,000
Ordinary share, shares outstanding	36,114,000	35,898,000
Treasury shares	5,009,000	5,009,000

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

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Face amount or stated value per share of common stock.

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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 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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