Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Issuance costs	$ 0	$ 389,000
Restricted stock award, shares	212
Represents equity value, description	Represents an amount less than $1 thousand
Common Stock [Member]
Issuance costs		$ 496