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FAIR VALUE DISCLOSURES - Schedule of the Carrying Amount, Fair Value, and Placement in the Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Financial instruments - assets
Investment securities held to maturity	$ 69,520	$ 79,816
Carrying Value [Member]
Financial instruments - assets
Investment securities held to maturity	69,520	79,816
Loan receivable net allowance for credit losses	835,932	772,614
Financial instruments - liabilities
Certificates of deposit including retirement certificates	180,523	159,652
Borrowings	36,054	28,568
Fair Value [Member]
Financial instruments - assets
Investment securities held to maturity	62,591	72,617
Loan receivable net allowance for credit losses	838,336	766,822
Financial instruments - liabilities
Certificates of deposit including retirement certificates	179,819	159,582
Borrowings	35,409	28,151
Level 1 [Member]
Financial instruments - assets
Investment securities held to maturity
Loan receivable net allowance for credit losses
Financial instruments - liabilities
Certificates of deposit including retirement certificates
Borrowings
Level 2 [Member]
Financial instruments - assets
Investment securities held to maturity	62,591	72,617
Loan receivable net allowance for credit losses
Financial instruments - liabilities
Certificates of deposit including retirement certificates	179,819	159,582
Borrowings	35,409	28,151
Level 3 [Member]
Financial instruments - assets
Investment securities held to maturity
Loan receivable net allowance for credit losses	838,336	766,822
Financial instruments - liabilities
Certificates of deposit including retirement certificates
Borrowings

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Amount of debt and lease obligation, classified as current.

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