SIGNIFICANT NON-CASH TRANSACTIONS (Details) - USD ($) $ in Thousands	9 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Class A common stock issued as part of acquisition's purchase consideration (Note 3)	$ 0	$ 35,245
Acquisition date fair value of contingent consideration in connection with business combinations	6,281	22,403
Right-of-use assets obtained in exchange for operating lease obligations	$ 7,720	$ 16,745

The fair value of assets acquired in noncash investing or financing activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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