GOODWILL AND INTANGIBLE ASSETS - Intangible Assets, net by major class (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Finite-Lived intangible assets
Carrying Amount, Gross	$ 378,458	$ 380,699
Accumulated Amortization	(52,197)	(34,813)
Totals	326,261	345,886
Customer relationships
Finite-Lived intangible assets
Carrying Amount, Gross	317,061	318,896
Accumulated Amortization	(40,821)	(26,990)
Totals	276,240	291,906
Intellectual property
Finite-Lived intangible assets
Carrying Amount, Gross	56,591	56,997
Accumulated Amortization	(9,037)	(5,767)
Totals	47,554	51,230
Non-compete agreements
Finite-Lived intangible assets
Carrying Amount, Gross	2,410	2,410
Accumulated Amortization	(1,100)	(872)
Totals	1,310	1,538
Other
Finite-Lived intangible assets
Carrying Amount, Gross	2,396	2,396
Accumulated Amortization	(1,239)	(1,184)
Totals	$ 1,157	$ 1,212