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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional paid-in Capital [Member]
Treasury shares at cost [Member]
Accumulated other comprehensive loss [Member]
Accumulated deficit [Member]
Total
Balance at Dec. 31, 2012 $ 98 $ 318,106 $ (20,091) $ (490) $ (153,914) $ 143,709
Balance, shares at Dec. 31, 2012 36,565,168          
Exercise of options and RSU's   1,145       1,145
Exercise of options and RSU's, shares 292,000          
Issuance of shares, net of issuance expenses $ 43 34,916       34,959
Issuance of shares, shares 15,600,000          
Share-based compensation expense   3,822       3,822
Other comprehensive loss, net       (1,079)   (1,079)
Net loss         (47,478) (47,478)
Balance at Dec. 31, 2013 $ 141 357,989 (20,091) (1,569) (201,392) 135,078
Balance, shares at Dec. 31, 2013 52,457,168          
Exercise of options and RSU's $ 1         1
Exercise of options and RSU's, shares 573,698          
Issuance of shares, net of issuance expenses $ 70 45,079       45,149
Issuance of shares, shares 24,100,000          
Share-based compensation expense   3,345       3,345
Other comprehensive loss, net       (2,542)   (2,542)
Net loss         (76,479) (76,479)
Balance at Dec. 31, 2014 $ 212 406,413 (20,091) (4,111) (277,871) $ 104,552
Balance, shares at Dec. 31, 2014 77,130,866         77,130,866
Exercise of options and RSU's $ 2 136       $ 138
Exercise of options and RSU's, shares 505,998         125,000
Issuance of shares, net of issuance expenses           $ 73,500
Share-based compensation expense   1,625       1,625
Other comprehensive loss, net       (4,505)   (4,505)
Net loss         1,011 1,011
Balance at Dec. 31, 2015 $ 214 $ 408,174 $ (20,091) $ (8,616) $ (276,860) $ 102,821
Balance, shares at Dec. 31, 2015 77,636,864         77,636,864