CONTINGENCIES (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 03, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 27, 2025	Sep. 30, 2024 USD ($)	Aug. 02, 2024 installment	Jun. 02, 2023 USD ($)
Loss Contingencies [Line Items]
Insurance recovery receivable		$ 10,000		$ 10,000			$ 0
FNI settlement		0	$ 0	7,550	$ 0
Proceeds from legal settlements				(7,550)
Accrued expenses		0	$ 2,000	0	$ 28,500
Envigo RMS, LLC (“Envigo RMS”) Class Action Lawsuit [Member]
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss									$ 795
Number of quarterly installments | installment								4
Envigo RMS Holding Corp. and Envigo Global Services, Inc. v. Freese and Nichols, Inc. [Member]
Loss Contingencies [Line Items]
Settlement payment period						30 days
US DOJ Resolution and Plea Agreements
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss		17,000		17,000
Additional debt to be secured by liens	$ 100,000
US DOJ Resolution and Plea Agreements | Virginia Animal Fighting Taskforce And Humane Society, United States [Member]
Loss Contingencies [Line Items]
Payments to be made	3,000
US DOJ Resolution and Plea Agreements | National Fish and Wildlife Foundation [Member]
Loss Contingencies [Line Items]
Payments to be made	3,500
US DOJ Agreement - Fines
Loss Contingencies [Line Items]
Payments to be made	$ 22,000
Probation period	5 years
Monitorship termination, period after completion of selection process	3 years
Monitorship termination, period after completion of probation	2 months
US DOJ Agreement - Fines | June 3, 2027
Loss Contingencies [Line Items]
Payments to be made	$ 5,000
US DOJ Agreement - Fines | June 3, 2026
Loss Contingencies [Line Items]
Payments to be made	5,000
US DOJ Agreement - Fines | June 3, 2025
Loss Contingencies [Line Items]
Payments to be made	5,000
US DOJ Agreement - Fines | June 3, 2028
Loss Contingencies [Line Items]
Payments to be made	7,000
US DOJ Agreement, Facility Improvements
Loss Contingencies [Line Items]
Payments to be made	7,000
US DOJ Agreement, Facility Improvements | June 3, 2027
Loss Contingencies [Line Items]
Payments to be made	2,000
US DOJ Agreement, Facility Improvements | June 3, 2026
Loss Contingencies [Line Items]
Payments to be made	2,500
US DOJ Agreement, Facility Improvements | June 3, 2025
Loss Contingencies [Line Items]
Payments to be made	$ 2,500
Securities Class Action Lawsuit
Loss Contingencies [Line Items]
Liability recorded related to lawsuits		$ 10,000		$ 10,000