Shareholders' Equity (Details 1) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Unvested RSUs at the beginning of the year | shares	569,071
Granted | shares	510,803
Vested | shares	(342,820)	[1]
Forfeited | shares	(84,304)
Unvested RSUs at the end of the year | shares	652,750
Weighted-average grant date fair value, Unvested RSUs at the beginning of the year | $ / shares	$ 3.13
Granted | $ / shares	1.09
Vested | $ / shares	2.74	[1]
Forfeited | $ / shares	2.59
Weighted-average grant date fair value, Unvested RSUs at the end of the year | $ / shares	$ 1.80

[1] During the fiscal year ended December 31, 2018, the aggregate number of ordinary shares that were issued pursuant to RSUs that became vested on a net basis was 340,367 ordinary shares.