Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Equity

v3.5.0.2
Equity
 6 Months Ended
Jun. 30, 2016
Equity [Abstract]  
Equity

Note 9. Equity

a. Stock-based compensation plans

Stock-based compensation expenses for equity classified stock options and RSUs were allocated as follows:

Three Months Ended Six Months Ended
June 30, June 30,
      2016       2015       2016       2015
U.S $ in thousands
Cost of sales $      729 $      1,797 $      1,451 $      3,630
Research and development, net 1,357 1,506 2,716 3,374
Selling, general and administrative 3,393 6,261 6,935 12,320
Total stock-based compensation expenses $ 5,479 $ 9,564 $ 11,102 $ 19,324

A summary of the Company’s stock option activity for the six months ended June 30, 2016 is as follows:

Weighted Average
      Number of Options       Exercise Price
Options outstanding as of January 1, 2016 2,449,742 $ 39.73
Granted 559,340 23.03
Exercised (93,591 ) 7.60
Forfeited (116,502 ) 45.57
Options outstanding as of June 30, 2016 2,798,989 $ 37.19
Options exercisable as of June 30, 2016                   1,230,844 $ 37.46

The outstanding options generally have a term of ten years from the grant date. Options granted become exercisable over the vesting period, which is normally a four-year period beginning on the grant date, subject to the employee’s continuing service to the Company.

The fair value of stock options is determined using the Black-Scholes model. The weighted-average grant date fair value of options that were granted during the six-month period ended June 30, 2016 was $12.36 per option.

During the six-month periods ended June 30, 2016 and 2015, the Company issued 93,591 shares and 107,914 shares, respectively, upon the exercise of stock options. This resulted in an increase in equity of $0.7 million and $2.1 million for the six-month periods ended June 30, 2016 and 2015, respectively.

As of June 30, 2016, the unrecognized compensation cost related to all unvested, equity-classified stock options of $23.6 million is expected to be recognized as an expense over a weighted-average period of 3.0 years.

A summary of the Company’s RSUs activity for the six months ended June 30, 2016 is as follows:

Weighted Average
      Number of RSUs       Grant Date Fair Value
Unvested RSUs outstanding as of January 1, 2016 559,124 $ 81.35
Forfeited (70,942 ) 78.77
Vested (43,557 ) 94.73
Unvested RSUs outstanding as of June 30, 2016                  444,625 $ 80.45

The fair value of RSUs is determined based on the quoted price of the Company’s ordinary shares on the date of the grant. There were no new RSUs grants during the six months ended June 30, 2016.

As of June 30, 2016, the unrecognized compensation cost related to all unvested, equity-classified RSUs of $18.5 million is expected to be recognized as expense on a straight-line basis over a weighted-average period of 2.2 years.

b. Accumulated other comprehensive income (loss)

The following table presents the changes in the components of accumulated other comprehensive income (loss), net of taxes for the six months ended June 30, 2016 and 2015:

Six months ended June 30, 2016
Net unrealized gain Foreign currency
(loss) on cash flow translation
      hedges       adjustments       Total
U.S. $ in thousands
Balance as of January 1, 2016 $ (107 ) $ (10,667 ) $ (10,774 )
Other comprehensive income before
       reclassifications 542 380 922
Amounts reclassified from accumulated
       other comprehensive income (151 ) - (151 )
Other comprehensive income 391 380 771
Balance as of June 30, 2016 $                          284 $                        (10,287 ) $                  (10,003 )
 
Six months ended June 30, 2015
Net unrealized gain Foreign currency
(loss) on cash flow translation
      hedges       adjustments       Total
U.S. $ in thousands
Balance as of January 1, 2015 $                          (1,243 ) $                        (2,404 ) $                  (3,647 )
Other comprehensive loss before
       reclassifications 327 (5,420 ) (5,093 )
Amounts reclassified from accumulated
       other comprehensive income 1,311 - 1,311
Other comprehensive income (loss) 1,638 (5,420 ) (3,782 )
Balance as of June 30, 2015 $ 395 $                        (7,824 ) $ (7,429 )