Consolidated balance sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 6	$ 1
Ordinary shares, par value	$ 0.00006	$ 0.00006
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	95,273,589	87,811,026
Ordinary shares, shares outstanding	95,273,589	87,811,026
Treasury Stock, Shares	27,722
Investments, fair value disclosure	$ 20,070	$ 0

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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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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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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