Equity (Tables)
|
6 Months Ended |
Jun. 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:
|
|
Three Months Ended |
|
Six Months Ended |
|
|
June 30, |
|
June 30, |
|
|
2018 |
|
2017 |
|
2018 |
|
2017 |
|
|
U.S $ in thousands |
|
U.S $ in thousands |
| Cost of sales |
|
$ |
442 |
|
$ |
799 |
|
$ |
829 |
|
$ |
1,442 |
| Research and development, net |
|
|
938 |
|
|
1,089 |
|
|
1,680 |
|
|
1,938 |
| Selling, general and administrative |
|
|
2,898 |
|
|
3,443 |
|
|
5,184 |
|
|
5,855 |
| Total stock-based compensation expenses |
|
$ |
4,278 |
|
$ |
5,331 |
|
$ |
7,693 |
|
$ |
9,235 |
|
| Summary of Stock Options Activity |
A summary of the Company’s stock option activity for the six months ended June 30, 2018 is as follows:
|
|
|
|
|
Weighted Average |
|
|
Number of Options |
|
Exercise Price |
| Options outstanding as of January 1, 2018 |
|
3,330,953 |
|
|
$ |
31.53 |
| Exercised |
|
(20,596 |
) |
|
|
16.23 |
| Forfeited |
|
(397,069 |
) |
|
|
35.07 |
| Options outstanding as of June 30, 2018 |
|
2,913,288 |
|
|
$ |
31.16 |
| Options exercisable as of June 30, 2018 |
|
1,436,409 |
|
|
$ |
40.56 |
|
| Summary of RSUs activity |
A summary of the Company’s RSUs activity for the six months ended June 30, 2018 is as follows:
|
|
|
|
|
Weighted Average Grant |
|
|
Number of RSUs |
|
Date Fair Value |
| Unvested RSUs outstanding as of January 1, 2018 |
|
302,163 |
|
|
$ |
30.88 |
| Granted |
|
995,125 |
|
|
|
19.88 |
| Forfeited |
|
(27,185 |
) |
|
|
41.04 |
| Vested |
|
(74,984 |
) |
|
|
32.38 |
| Unvested RSUs outstanding as of June 30, 2018 |
|
1,195,119 |
|
|
$ |
21.05 |
|
| 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 six months ended June 30, 2018 and 2017, respectively:
|
|
Six months ended June 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 |
|
|
(903 |
) |
|
|
(1,306 |
) |
|
|
(2,209 |
) |
| Amounts reclassified from accumulated other comprehensive loss |
|
|
34 |
|
|
|
95 |
|
|
|
129 |
|
| Other comprehensive loss |
|
|
(869 |
) |
|
|
(1,211 |
) |
|
|
(2,080 |
) |
| Balance as of June 30, 2018 |
|
$ |
(539 |
) |
|
$ |
(8,564 |
) |
|
$ |
(9,103 |
) |
| |
|
|
|
|
Six months ended June 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 (loss) before reclassifications |
|
|
1,069 |
|
|
|
3,150 |
|
|
|
4,219 |
|
| Amounts reclassified from accumulated other comprehensive loss |
|
|
(883 |
) |
|
|
- |
|
|
|
(883 |
) |
| Other comprehensive income |
|
|
186 |
|
|
|
3,150 |
|
|
|
3,336 |
|
| Balance as of June 30, 2017 |
|
$ |
162 |
|
|
$ |
(10,305 |
) |
|
$ |
(10,143 |
) |
|