Equity (Tables)
|
6 Months Ended |
Jun. 30, 2019 |
|---|
| Equity [Abstract] |
|
| Schedule of Share-based Compensation Expense |
Stock-based compensation expenses for equity-classified stock options, restricted share units ("RSUs") and performance stock units ("PSUs") were allocated as follows:
|
|
Three Months Ended |
|
Six Months Ended |
|
|
June 30, |
|
June 30, |
|
|
2019 |
|
2018 |
|
2019 |
|
2018 |
|
|
U.S $ in thousands |
|
U.S $ in thousands |
| Cost of sales |
|
$ |
541 |
|
$ |
442 |
|
$ |
895 |
|
$ |
829 |
| Research and development, net |
|
|
1,511 |
|
|
938 |
|
|
2,270 |
|
|
1,680 |
| Selling, general and administrative |
|
|
4,041 |
|
|
2,898 |
|
|
7,157 |
|
|
5,184 |
| Total stock-based compensation expenses |
|
$ |
6,093 |
|
$ |
4,278 |
|
$ |
10,322 |
|
$ |
7,693 |
|
| Summary of Stock Options Activity |
A summary of the Company’s stock option activity for the six months ended June 30, 2019 is as follows:
|
|
|
|
|
Weighted Average |
|
|
Number of Options |
|
Exercise Price |
| Options outstanding as of January 1, 2019 |
|
2,551,743 |
|
|
$ |
30.82 |
| Exercised |
|
(195,468 |
) |
|
|
21.75 |
| Forfeited |
|
(176,764 |
) |
|
|
24.63 |
| Options outstanding as of June 30, 2019 |
|
2,179,511 |
|
|
$ |
32.14 |
| Options exercisable as of June 30, 2019 |
|
1,570,615 |
|
|
$ |
36.69 |
|
| Summary of RSUs and PSUs activity |
A summary of the Company’s RSUs and PSUs activity for the six months ended June 30, 2019 is as follows:
|
|
|
|
|
Weighted Average |
|
|
Number of RSUs and PSUs
|
|
Grant Date Fair Value |
| Unvested as of January 1, 2019 |
|
1,422,887 |
|
|
$ |
20.17 |
| Granted |
|
1,541,482 |
|
|
|
26.58 |
| Vested |
|
(267,840 |
) |
|
|
20.43 |
| Forfeited |
|
(163,644 |
) |
|
|
21.02 |
| Unvested as of June 30, 2019 |
|
2,532,885 |
|
|
$ |
23.99 |
|
| 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, 2019 and 2018, respectively:
|
|
Six months ended June 30, 2019 |
|
|
Net unrealized gain |
|
Foreign currency |
|
|
|
|
|
|
(loss) on cash flow |
|
translation |
|
|
|
|
|
|
hedges |
|
adjustments |
|
Total |
|
|
|
|
|
|
U.S. $ in thousands |
|
|
|
|
| Balance as of January 1, 2019 |
|
$ |
(627 |
) |
|
$ |
(7,126 |
) |
|
$ |
(7,753 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Other comprehensive income (loss) before reclassifications |
|
|
1,277 |
|
|
|
(444 |
) |
|
|
833 |
|
| Amounts reclassified from accumulated other comprehensive loss |
|
|
(127 |
) |
|
|
- |
|
|
|
(127 |
) |
| Other comprehensive income (loss) |
|
|
1,150 |
|
|
|
(444 |
) |
|
|
706 |
|
| Balance as of June 30, 2019 |
|
$ |
523 |
|
|
$ |
(7,570 |
) |
|
$ |
(7,047 |
) |
|
|
Six months ended June 31, 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 income (loss) |
|
|
(869 |
) |
|
|
(1,211 |
) |
|
|
(2,080 |
) |
| Balance as of June 30, 2018 |
|
$ |
(539 |
) |
|
$ |
(8,564 |
) |
|
$ |
(9,103 |
) |
|