Property, Plant, and Equipment (Tables)

12 Months Ended

Sep. 30, 2022

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Estimated useful lives for major classes of depreciable assets are as follows:

Asset Class	Estimated Useful Life
Machinery and equipment	3 to 20 years
Buildings and improvements	10 to 40 years

Property, plant, and equipment consists of the following:

	September 30, 2022		September 30, 2021
Machinery and equipment	$	401,334	$	388,352
Rental equipment	267,345		246,257
Land and buildings	82,985		70,048
Construction in process	72,184		59,737
	$	823,848	$	764,394
Less: accumulated depreciation	(418,559)		(389,406)
Property, plant, and equipment, net	$	405,289	$	374,988

Depreciation expense and maintenance and repairs expense for the years ended September 30, 2022, 2021 and 2020 were as follows:

	Year Ended September 30,
	2022		2021		2020
Depreciation expense	$	82,637	$	76,279	$	73,002
Maintenance and repair expense	$	30,425	$	22,354	$	20,303

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

The Company entered into secured financing agreements that require providing a security interest in specified equipment. As of September 30, 2022 and September 30, 2021, the gross and net amounts of those assets are as follows:

	September 30, 2022				September 30, 2021
	Gross		Net		Gross		Net
Machinery and equipment	$	86,294	$	62,459	$	73,632	$	57,036
Construction in process	49,983		49,983		30,504		30,504
	$	136,277	$	112,442	$	104,136	$	87,540