Property, Plant and Equipment - Net

6 Months Ended

Mar. 31, 2023

Property Plant And Equipment [Abstract]

5. PROPERTY, PLANT AND EQUIPMENT—NET

Property, plant and equipment – net consisted of the following (in thousands):


	March 31, 2023			September 30, 2022
Land	$	4,829		$	3,350
Buildings and improvements		124,404			110,300
Manufacturing equipment		600,144			540,536
Computer equipment		30,016			28,198
Furniture and fixtures		7,016			6,867
Vehicles		1,063			941
Total property and equipment		767,472			690,192
Construction in progress		91,536			140,566
		859,008			830,758
Accumulated depreciation		(351,810	)		(312,845	)
Total property and equipment – net	$	507,198		$	517,913

Depreciation expense was approximately $18.7 million and $15.7 million in the three months ended March 31, 2023 and 2022, respectively, and $39.5 million and $30.2 million in the six months ended March 31, 2023 and 2022, respectively. During the three months ended March 31, 2023 and 2022, $1.6 million and $1.2 million of interest was capitalized, respectively, and during the six months ended March 31, 2023 and 2022, $2.9 million and $2.3 million of interest was capitalized, respectively.