Financial Expenses, Net - Summary of Financial Income and Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
FInancial Expenses, Net [Abstract]
Interest on bank deposits, net	$ 1,741	$ 747	$ 520
Foreign currency transactions gains, net	0	1,773	0
Other	0	27	0
Financial Income	1,741	2,547	520
Bank charges	195	185	149
Foreign currency transactions losses, net	574	0	1,224
Other	2	0	32
Financial expenses	(771)	(185)	(1,405)
Total	$ 970	$ 2,362	$ (885)