Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Note 6. Property, Plant and Equipment, Net

Property, plant and equipment, net consisted of the following:

	December 31,			December 31,
	2019			2018
	(U.S. $ in thousands)
Machinery and equipment	$	140,413		$	134,708
Buildings and improvements		149,022			139,666
Computer equipment and software		46,900			49,991
Office equipment, furniture and fixtures		13,780			17,616
Land		19,058			19,111
		369,173			361,092
Accumulated depreciation		(180,769	)		(173,437	)
		188,404			187,655
Construction work in progress		1,302			495
	$	189,706		$	188,150

Depreciation expenses were $25.8 million, $28.9 million and $31.6 million in the years ended December 31, 2019, 2018 and 2017, respectively.