GENERAL - ATM Offering Program (Details) - USD ($)	9 Months Ended		12 Months Ended	17 Months Ended
	Sep. 30, 2017		Dec. 31, 2016	Sep. 30, 2017		May 10, 2016
Class of Stock [Line Items]
Maximum amount which can be raised under ATM offering program						$ 25,000,000.0
Maximum amount which can be raised under shelf registration statement	$ 4,300,000.0			$ 4,300,000.0
ATM Offering Program
Class of Stock [Line Items]
Gross proceeds from shares issued under the ATM offering program	9,400,000			14,000,000
Underwriter commission, fees and offering expenses	439,000			907,000
Issuance of ordinary shares in an ATM offering of ordinary shares, net of issuance expenses	9,010,000	[1]	$ 4,099,000	13,100,000
Maximum amount which can be raised under ATM offering program	25,000,000			25,000,000
Maximum amount which can be raised under shelf registration statement	$ 4,300,000.0			$ 4,300,000.0
ATM Offering Program | Weighted Average
Class of Stock [Line Items]
Price per share of shares sold under ATM offering program (in USD per share)	$ 1.76			$ 2.31
Ordinary Share | ATM Offering Program
Class of Stock [Line Items]
Issuance of ordinary shares and warrants in an offering, net of issuance expenses (in shares)	5,379,908	[1]	692,062	6,071,970	[1]
Underwriter commission, fees and offering expenses	$ 439,000	[1]	$ 468,000
Issuance of ordinary shares in an ATM offering of ordinary shares, net of issuance expenses	$ 15,000	[1]	$ 2,000

[1] (2) See Note 8e to the condensed consolidated financial statements