Share Capital (Details 2) - shares
|
12 Months Ended |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Employees and Directors [Member] |
|
|
|
|
|
|
|
| Number of options |
|
|
|
|
|
|
|
| Options outstanding at the beginning of the year |
|
512,615
|
|
385,115
|
|
205,592
|
|
| Granted |
|
531,390
|
|
156,000
|
|
191,720
|
|
| Exercised |
|
(6,076)
|
|
|
|
|
|
| Expired |
|
(11,891)
|
|
(2,500)
|
|
(7,102)
|
|
| Forfeited |
|
(304,677)
|
|
(26,000)
|
|
(5,096)
|
|
| Options outstanding at the end of the year |
|
721,361
|
|
512,615
|
|
385,115
|
|
| Options exercisable at the end of the year |
|
310,093
|
|
211,906
|
|
131,265
|
|
| Weighted average exercise price |
|
|
|
|
|
|
|
| Options outstanding at the beginning of the year |
[1] |
15.09
|
|
17.68
|
|
27.1
|
|
| Granted |
|
5.09
|
|
7.55
|
[1] |
8.07
|
[1] |
| Exercised |
|
1.3
|
|
|
[1] |
|
[1] |
| Expired |
|
23.83
|
|
24.01
|
[1] |
24.89
|
[1] |
| Forfeited |
|
5.84
|
|
7.42
|
[1] |
25.96
|
[1] |
| Options outstanding at the end of the year |
[1] |
4.38
|
|
15.09
|
|
17.68
|
|
| Options exercisable at the end of the year |
|
4.02
|
[1] |
20.28
|
|
22.29
|
|
| Non-Employees [Member] |
|
|
|
|
|
|
|
| Number of options |
|
|
|
|
|
|
|
| Options outstanding at the beginning of the year |
|
18,664
|
|
13,664
|
|
13,664
|
|
| Granted |
|
5,000
|
|
5,000
|
|
|
|
| Options outstanding at the end of the year |
|
23,664
|
|
18,664
|
|
13,664
|
|
| Options exercisable at the end of the year |
|
10,202
|
|
8,165
|
|
7,831
|
|
| Weighted average exercise price |
|
|
|
|
|
|
|
| Options outstanding at the beginning of the year |
[1] |
33.44
|
|
43.52
|
|
43.52
|
|
| Granted |
|
5.07
|
|
5.87
|
[1] |
|
[1] |
| Options outstanding at the end of the year |
|
27.44
|
|
33.44
|
[1] |
43.52
|
[1] |
| Options exercisable at the end of the year |
|
46.03
|
|
51.21
|
|
52.57
|
|
|
|