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ACQUISITIONS - Net assets and liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Aug. 30, 2024	Dec. 31, 2023	Dec. 31, 2022
ACQUISITIONS
Goodwill	$ 357,823		$ 257,842	$ 251,842
Ecosio
ACQUISITIONS
Deferred income tax liabilities adjustments	(3,879)
Goodwill adjustments	$ (3,841)
Cash and cash equivalents		$ 788
Accounts receivable		2,068
Prepaid expenses and other current assets		475
Property and equipment		63,984
Other assets		263
Goodwill		119,668
Other intangibles		5,950
Accounts payable		(1,118)
Operating lease liabilities		(229)
Third-party debt		(3,904)
Accrued expenses		(5,222)
Deferred revenue		(752)
Deferred income tax		(12,142)
Total		169,829
Ecosio | Developed technology
ACQUISITIONS
Property and equipment		$ 63,800

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