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

Goodwill and Other Intangible Assets (Tables)

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Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in the Carrying Amount of Goodwill

Changes in the carrying amount of the Company’s goodwill for the nine-months ended September 30, 2018 were as follows:

U.S. $ in millions
Goodwill as of January 1, 2018 $ 387.1
Translation differences (0.4 )
Goodwill as of September 30, 2018 $                   386.7
Schedule of Other Intangible Assets

Other intangible assets consisted of the following:

September 30, 2018 December 31, 2017
      Carrying Amount,             Net       Carrying Amount,             Net
Net of Accumulated Book Net of Accumulated Book
Impairment Amortization Value Impairment Amortization Value
U.S. $ in thousands
Developed technology $ 299,643 $ (231,654 ) $ 67,989 $ 304,601 $ (220,420 ) $ 84,181
Patents 10,317 (5,931 ) 4,386 19,708 (14,279 ) 5,429
Trademarks and trade names 27,253 (18,730 ) 8,523 27,248 (18,245 ) 9,003
Customer relationships 104,188 (68,122 ) 36,066 106,203 (63,435 ) 42,768
Capitalized software development costs 19,541 (19,057 ) 484 19,541 (18,800 ) 741
$ 460,942 $     (343,494 ) $      117,448 $ 477,301 $    (335,179 ) $      142,122
Schedule of Estimated Amortization Expense Relating to Intangible Assets

As of September 30, 2018, the estimated amortization expense relating to intangible assets currently subject to amortization for each of the following periods was as follows:

Remaining 3 months of 2018 $ 8,122
2019 31,995
2020 31,659
2021 31,099
2022 9,993
Thereafter 4,580
Total       117,448