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FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Reconciliation of Changes in Fair Value of Financial Assets and Liabilities Classified as Level 3 (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of changes in the fair value of our financial assets
Assets at beginning of period	$ 28,232	$ 23,745
Purchases	291	2,055
Assets at end of period	28,523	25,800
Reconciliation of changes in the fair value of our financial liabilities
Liabilities at beginning of period	9,455	4,022
Additions	0	500
Total gains or losses included in earnings	20	8
Settlements	(1,125)	(750)
Liabilities at end of period	8,350	3,780
Galileo Technologies
Reconciliation of changes in the fair value of our financial assets
Assets at beginning of period	37,440	33,565
Purchases	0	42
Accrued interest	433	0
Transfers out	0	(500)
Assets at end of period	37,868	33,107
Reconciliation of changes in the fair value of our financial liabilities
Reserves	$ (5)	$ 0

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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