Property, Plant and Equipment

12 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

6.    Property, Plant and Equipment

Property, plant and equipment were as follows as of September 30, 2019 and 2018 (in thousands):

	September 30,
	2019		2018
Buildings, land, and land use right	$	50,583	$	47,745
Computer equipment and software		61,603		56,982
Machinery and equipment		89,481		55,794
Furniture and fixtures		7,423		4,842
Leasehold improvements		30,612		19,433
Capital projects in progress		11,701		5,796
		251,403		190,592
Less: accumulated depreciation and amortization		(150,734)		(130,604)
Property, plant and equipment, net	$	100,669	$	59,988

Depreciation expense was $19.3 million, $12.5 million and $10.1 million, respectively, for the fiscal years ended September 30, 2019, 2018 and 2017. The Company recorded $1.9 million of additions to property, plant and equipment for which cash payments had not yet been made as of September 30, 2019.