Equity (Tables)
|
9 Months Ended |
Sep. 30, 2018 |
|---|
| Equity [Abstract] |
|
| Schedule of Share-based Compensation Expense |
Stock-based compensation
expenses for equity-classified stock options and restricted stock units ("RSUs") were allocated as follows for the three and nine month periods ended each of September 30, 2018 and 2017:
|
|
Three Months Ended |
|
Nine Months Ended |
|
|
September 30, |
|
September 30, |
|
|
2018 |
|
2017 |
|
2018 |
|
2017 |
|
|
U.S $ in thousands |
|
U.S $ in thousands |
| Cost of sales |
|
$ |
351 |
|
$ |
642 |
|
$ |
1,180 |
|
$ |
2,084 |
| Research and development, net |
|
|
928 |
|
|
905 |
|
|
2,608 |
|
|
2,843 |
| Selling, general and administrative |
|
|
2,734 |
|
|
3,351 |
|
|
7,918 |
|
|
9,206 |
| Total stock-based compensation expenses |
|
$ |
4,013 |
|
$ |
4,898 |
|
$ |
11,706 |
|
$ |
14,133 |
|
| Summary of Stock Options Activity |
A summary of the Company’s stock option activity for the nine months ended September 30, 2018 is as follows:
| |
|
|
|
|
|
Weighted Average |
| |
|
|
Number of Options |
|
Exercise Price |
| |
Options outstanding as of January 1, 2018 |
|
3,330,953 |
|
|
$ |
31.53 |
| |
Granted |
|
50,000 |
|
|
|
20.48 |
| |
Exercised |
|
(87,158 |
) |
|
|
19.41 |
| |
Forfeited |
|
(527,286 |
) |
|
|
38.29 |
| |
Options outstanding as of September 30, 2018 |
|
2,766,509 |
|
|
$ |
30.42 |
| |
Options exercisable as of September 30, 2018 |
|
1,476,128 |
|
|
$ |
38.30 |
|
| Summary of RSUs activity |
A summary of the Company’s RSUs activity for the nine months ended September 30, 2018 is as follows:
| |
|
|
|
|
|
Weighted Average |
|
|
|
Number of RSUs |
|
Grant Date Fair Value |
|
Unvested RSUs outstanding as of January 1, 2018 |
|
302,163 |
|
|
$ |
30.88 |
|
Granted |
|
1,306,825 |
|
|
|
19.69 |
|
Forfeited |
|
(70,831 |
) |
|
|
44.36 |
|
Vested |
|
(91,911 |
) |
|
|
27.73 |
|
Unvested RSUs outstanding as of September 30, 2018 |
|
1,446,246 |
|
|
$ |
20.07 |
|
| Schedule of Accumulated other comprehensive income (loss) |
The following tables present the changes in the components of accumulated other comprehensive income (loss), net of taxes, for the nine months ended September 30, 2018 and 2017, respectively:
| |
|
|
Nine months ended September 30, 2018 |
|
|
|
Net unrealized gain |
|
Foreign currency |
|
|
|
|
|
|
|
(loss) on cash flow |
|
translation |
|
|
|
|
|
|
|
hedges |
|
adjustments |
|
Total |
|
|
|
U.S. $ in thousands
|
|
Balance as of January 1, 2018 |
|
$ |
330 |
|
|
$ |
(7,353 |
) |
|
$ |
(7,023 |
) |
|
Other comprehensive income (loss) before reclassifications |
|
|
(733 |
) |
|
|
(1,540 |
) |
|
|
(2,273 |
) |
|
Amounts reclassified from accumulated other comprehensive loss |
|
|
386 |
|
|
|
95 |
|
|
|
481 |
|
|
Other comprehensive loss |
|
|
(347 |
) |
|
|
(1,445 |
) |
|
|
(1,792 |
) |
|
Balance as of September 30, 2018 |
|
$ |
(17 |
) |
|
$ |
(8,798 |
) |
|
$ |
(8,815 |
) |
| |
|
|
|
| |
|
|
Nine months ended September 30, 2017 |
|
|
|
Net unrealized gain |
|
Foreign currency |
|
|
|
|
|
|
|
(loss) on cash flow |
|
translation |
|
|
|
|
|
|
|
hedges |
|
adjustments |
|
Total |
|
|
|
U.S. $ in thousands
|
|
Balance as of January 1, 2017 |
|
$ |
(24 |
) |
|
$ |
(13,455 |
) |
|
$ |
(13,479 |
) |
|
Other comprehensive income before reclassifications |
|
|
994 |
|
|
|
5,103 |
|
|
|
6,097 |
|
|
Amounts reclassified from accumulated other comprehensive loss |
|
|
(894 |
) |
|
|
- |
|
|
|
(894 |
) |
|
Other
comprehensive income |
|
|
100 |
|
|
|
5,103 |
|
|
|
5,203 |
|
|
Balance as of September 30, 2017 |
|
$ |
76 |
|
|
$ |
(8,352 |
) |
|
$ |
(8,276 |
) |
|