Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Issuance expenses paid		$ 1,505
Issuance expenses in an amount		3,600
At-the-Market Offering
Issuance expenses paid		211	$ 211
Investment Agreement
Issuance expenses paid		830
Best Efforts
Issuance expenses paid	686
Registered Direct
Issuance expenses paid	1,035
Warrant Exercise
Issuance expenses paid	$ 1,019