GOODWILL AND INTANGIBLE ASSETS - Intangible Assets, net by major class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Finite-Lived intangible assets
Carrying Amount, Gross	$ 380,699	$ 28,280
Accumulated Amortization	(34,813)	(4,047)
Totals	345,886	24,233
Customer relationships
Finite-Lived intangible assets
Carrying Amount, Gross	318,896	23,659
Accumulated Amortization	(26,990)	(2,462)
Totals	291,906	21,197
Intellectual property
Finite-Lived intangible assets
Carrying Amount, Gross	56,997	315
Accumulated Amortization	(5,767)	(312)
Totals	51,230	3
Non-compete agreements
Finite-Lived intangible assets
Carrying Amount, Gross	2,410	2,100
Accumulated Amortization	(872)	(397)
Totals	1,538	1,703
Other
Finite-Lived intangible assets
Carrying Amount, Gross	2,396	2,206
Accumulated Amortization	(1,184)	(876)
Totals	$ 1,212	$ 1,330