LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Outstanding principal balance and carrying amount (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Sep. 30, 2025 |
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| LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES | ||
| Balance | $ 136,563 | $ 132,835 |
| Carrying Amount | 135,297 | 131,504 |
| Total Purchased Loans | Citizens Bank of Cape Vincent | ||
| LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES | ||
| Balance | 24,063 | 26,372 |
| Carrying Amount | 23,434 | 25,658 |
| Purchased Non-Credit Impaired Loans | Citizens Bank of Cape Vincent | ||
| LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES | ||
| Balance | 24,063 | 26,372 |
| Carrying Amount | $ 23,434 | $ 25,658 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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