WARRANTY LIABILITY - Schedule of Changes in Warranty Liability (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance, beginning of period	$ 6,542	$ 6,016	$ 5,694	$ 5,524
Warranties issued and changes in estimated pre-existing warranties	3,345	2,658	10,237	9,134
Actual warranty costs incurred	(2,643)	(2,984)	(8,687)	(8,968)
Balance, end of period	$ 7,244	$ 5,690	$ 7,244	$ 5,690

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

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of increase in the standard and extended product warranty accrual from warranties issued.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
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- Definition

The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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