SEGMENT AND GEOGRAPHIC INFORMATION - Operating Segments Revenue and Operating Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
SEGMENT INFORMATION
Revenue	$ 490,739	$ 572,425
Operating Income (Loss)	(86,406)	(81,460)
Interest expense	(46,884)	(43,019)
Other income	2,530	237
(Loss) income before income taxes	(130,760)	(124,242)
Depreciation and amortization	57,118	54,717
Capital expenditures	22,310	27,503
Assets	781,361	856,530
Segment Reporting, Reconciling Item, Corporate Nonsegment
SEGMENT INFORMATION
Operating Income (Loss)	(63,176)	(71,802)
Depreciation and amortization	639	58
Service
SEGMENT INFORMATION
Revenue	219,663	223,813
Product
SEGMENT INFORMATION
Revenue	271,076	348,612
DSA
SEGMENT INFORMATION
Capital expenditures	5,679	13,314
Assets	267,576	304,015
DSA | Operating Segments
SEGMENT INFORMATION
Operating Income (Loss)	8,699	15,246
Depreciation and amortization	17,865	16,371
DSA | Service
SEGMENT INFORMATION
Revenue	175,142	180,348
DSA | Product
SEGMENT INFORMATION
Revenue	4,974	4,742
RMS
SEGMENT INFORMATION
Capital expenditures	16,631	14,189
Assets	513,785	552,515
RMS | Operating Segments
SEGMENT INFORMATION
Operating Income (Loss)	(31,929)	(24,904)
Depreciation and amortization	38,614	38,288
RMS | Service
SEGMENT INFORMATION
Revenue	44,521	43,465
RMS | Product
SEGMENT INFORMATION
Revenue	$ 266,102	$ 343,870