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
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (1,150)	$ (1,359)
Denominator:
Shares used in computing net loss per share, basic and diluted	24,481	17,162
Net loss per share, basic and diluted	$ (0.05)	$ (0.08)
Stock Options [Member]
Denominator:
Common stock shares excluded from net loss per share, diluted	1,561	2,962
Stock Warrants [Member]
Denominator:
Common stock shares excluded from net loss per share, diluted	1,616	9,127