Property, Plant and Equipment (Tables)

12 Months Ended

Sep. 30, 2022

Property, Plant and Equipment

Summary of the major classes of property, plant and equipment

	September 30,
	2021		2022
Land and land improvements	$	10,266	$	10,158
Buildings and improvements		46,241		45,872
Machinery and equipment		306,161		313,841
Construction in process		3,344		8,756
		366,012		378,627
Less accumulated depreciation		(218,764)		(235,855)
	$	147,248	$	142,772