BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Sep. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Estimated Useful Lives

Depreciation is calculated using the straight-line method over the estimated useful lives of the related assets as follows:

Buildings	4 to 40 years
Building improvements	3 to 20 years
Machinery and equipment	1 to 20 years
Leasehold improvements	Lesser of remaining term of the lease or useful life
Software	2 to 10 years

As of September 30, 2025 and September 30, 2024, property, plant and equipment at cost and accumulated depreciation were as follows:

(in thousands)	September 30, 2025		September 30, 2024
Land	$	29,766	$	29,401
Buildings and related improvements	217,894		192,569
Machinery and equipment	701,220		596,748
Leasehold improvements	22,116		22,814
Software	64,371		57,363
Construction in progress	107,758		248,128
Property, plant and equipment, at cost	1,143,125		1,147,023
Accumulated depreciation	(548,859)		(494,930)
Property, plant and equipment, net	$	594,266	$	652,093