Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in the carrying amount of goodwill

		U.S. $ in thousands
Goodwill as of January 1, 2021*	$	35,694
Goodwill acquired**		1,716
Measurement period adjustments		2,400
Foreign currency translation adjustments		(60	)
Goodwill as of September 30, 2021	$	39,750

Schedule of other intangible assets

	September 30, 2021							December 31, 2020
		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	$	365,039	$	(276,097	)	$	88,942	$	357,863	$	(260,123	)	$	97,740
Patents		18,768		(9,594	)		9,174		17,699		(8,487	)		9,212
Trademarks and trade names		26,056		(21,962	)		4,094		26,036		(21,114	)		4,922
Customer relationships		100,802		(86,002	)		14,800		101,107		(81,413	)		19,694
Capitalized software development costs		7,410		(7,410	)		-		7,410		(7,410	)		-
	$	518,075	$	(401,065	)	$	117,010	$	510,115	$	(378,547	)	$	131,568

Schedule of estimated amortization expense relating to intangible assets

		Estimated
		amortization expense
		(U.S. $ in thousands)
Remaining 3 months of 2021	$	8,213
2022		30,765
2023		16,166
2024		12,251
2025 and thereafter		49,615
Total	$	117,010