Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 89	$ 100
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Ordinary shares, authorized (in shares)	100,000,000	100,000,000
Ordinary shares, outstanding (in shares)	42,182,774	36,635,362
Ordinary shares, issued (in shares)	42,182,774	36,635,362