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Significant Accounting Policies (Numerators And Denominators In The Calculation Of Basic And Diluted Net Loss Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (19,328)	$ (17,527)	$ (5,125)	$ (3,526)	$ (36,855)	$ (8,651)
Shares used in computing net loss per share, basic and diluted	40,015		39,953		39,989	38,843
Net Loss Per Share Basic And Diluted	$ (0.48)		$ (0.13)		$ (0.92)	$ (0.22)
Stock Option [Member]
Numerator:
Common stock excluded from net loss per share, diluted	1,937		2,129		2,095	2,163

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