Inventories (Tables)

12 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Schedule of Inventory

The major classes of inventory, net are as follows:

	September 30, 2022		September 30, 2021
Raw materials and supplies	$	120,532	$	86,469
Work in progress	36,499		19,842
Finished goods and products held for resale	80,811		59,624
Costs of unbilled projects	2,309		2,277
Reserves for excess and obsolete	(10,800)		(9,709)
Inventories, net	$	229,351	$	158,503

Schedule of Activity in Reserves for Excess and Obsolete Inventory

The following is the activity in the reserves for excess and obsolete inventory:

	Year Ended September 30,
	2022		2021		2020
Balance at beginning of period	$	(9,709)	$	(11,467)	$	(13,370)
Change to reserve requirement	(2,608)		265		(310)
Write-offs	684		1,516		2,197
Foreign currency and other	833		(23)		16
Balance at end of period	$	(10,800)	$	(9,709)	$	(11,467)