Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 852,274		$ 852,274		$ 823,848
Less: accumulated depreciation	(438,194)		(438,194)		(418,559)
Property, plant, and equipment, net	414,080		414,080		405,289
Depreciation and amortization	22,247	$ 20,722	43,286	$ 40,042
Maintenance and repair expense	8,714	$ 7,475	16,944	$ 13,594
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	400,714		400,714		401,334
Land and buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	79,748		79,748		82,985
Construction in process
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	94,168		94,168		72,184
Rental equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 277,644		$ 277,644		$ 267,345