SHARE CAPITAL (Options Granted to Employees) (Details) - Options And Restricted Stock Granted To Employees [Member] - $ / shares		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of options
Outstanding at beginning of year		4,884,211	6,952,293	5,870,309
Granted			0	1,909,000
Forfeited and Expired		154,594	1,514,957	277,016
Exercised	[1]	0	553,125	550,000
Outstanding at end of year		4,729,617	4,884,211	6,952,293
Exercisable at end of year		4,457,461	3,498,492	4,477,043
Weighted average exercise price
Outstanding at beginning of year		$ 3.617	$ 3.363	$ 3.77
Granted			0	1.72
Forfeited and Expired		4.004	3.748	5.395
Exercised	[1]	0	0.067	0.972
Outstanding at end of year		3.604	3.617	3.363
Exercisable at end of year		$ 3.696	$ 4.296	$ 4.182

[1] The total intrinsic value of options exercised during the years ended December 31, 2015, 2016 and 2017, was approximately $675,000, $213,000 and $0, respectively.