BUSINESS COMBINATIONS - Preliminary fair value of assets acquired and liabilities assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Assets acquired and liabilities assumed:
Goodwill	$ 94,286	$ 157,825	$ 51,927
Plato BioPharma Inc
Assets acquired and liabilities assumed:
Cash	1,027
Trade receivables and contract assets	853
Prepaid expenses and other current assets	133
Property and equipment	1,127
Operating lease right-of-use assets, net	2,272
Goodwill	9,279
Intangible assets	4,800
Accounts payable	(113)
Accrued expenses and other liabilities	(343)
Long-term operating leases, net	(2,272)
Deferred tax liabilities	(1,457)
Total	15,306
Envigo RMS Holding Corp
Assets acquired and liabilities assumed:
Cash	2,488
Restricted cash	435
Trade receivables and contract assets	43,566
Inventories	40,000
Prepaid expenses and other current assets	17,373
Property and equipment	106,338
Operating lease right-of-use assets, net	13,229
Goodwill	282,768
Other assets	7,676
Accounts payable	(25,832)
Accrued expenses and other liabilities	(11,665)
Fees invoiced in advance	(7,047)
Current portion on long-term operating lease	(4,371)
Long-term operating leases, net	(8,634)
Other liabilities	(5,339)
Deferred tax liabilities	(77,291)
Noncontrolling interest	880
Total	674,574
Envigo RMS Holding Corp | Customer relationships
Assets acquired and liabilities assumed:
Intangible assets	251,000
Envigo RMS Holding Corp | Intellectual property
Assets acquired and liabilities assumed:
Intangible assets	49,000
Robinson Services, Inc.
Assets acquired and liabilities assumed:
Customer relationship	4,700
Non-compete agreement	300
Supply agreement	200
Goodwill	948
Total	6,148
Integrated Laboratory Systems, LLC (ILS)
Assets acquired and liabilities assumed:
Cash	797
Trade receivables and contract assets	4,730
Property and equipment	4,436
Operating lease right-of-use assets, net	4,994
Goodwill	25,283
Intangible assets	22,300
Accounts payable	(1,165)
Accrued expenses and other liabilities	(905)
Fees invoiced in advance	(2,472)
Long-term operating leases, net	(4,554)
Total	53,444
Orient BioResource Center, Inc
Assets acquired and liabilities assumed:
Cash	5,481
Trade receivables and contract assets	2,025
Inventories	9,400
Prepaid expenses and other current assets	2,609
Property and equipment	8,336
Goodwill	18,624
Intangible assets	13,400
Accounts payable	(552)
Accrued expenses and other liabilities	(285)
Fees invoiced in advance	(6,548)
Deferred tax liabilities	(3,216)
Total	49,274
Protypia, Inc.
Assets acquired and liabilities assumed:
Goodwill	6,002
Intangible assets	5,600
Other liabilities	(84)
Deferred tax liabilities	(652)
Total	$ 10,866