DERIVATIVE INSTRUMENTS - CREDIT RISK EXPOSURE (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2025 USD ($)
Credit Risk Exposure [Line Items]
Gross Credit Exposure	$ 136,586
Investment grade
Credit Risk Exposure [Line Items]
Gross Credit Exposure	96,377
Noninvestment grade
Credit Risk Exposure [Line Items]
Gross Credit Exposure	5,862
Internally-rated investment grade
Credit Risk Exposure [Line Items]
Gross Credit Exposure	12,678
Internally-rated noninvestment grade
Credit Risk Exposure [Line Items]
Gross Credit Exposure	$ 21,669