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RETIREMENT PLANS - FAIR VALUE (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | --- | ---
Pension plan assets at the fair value |  |  |
Fair value measurements | $ 13,094 | $ 11,982 |
Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 12,523 | 11,982 |
Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 571 | 0 | $ 0
Cash |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 531 | 263 |
Cash | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 531 | 263 |
Cash | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Cash | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
U.S. treasury and government securities |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 516 | 709 |
U.S. treasury and government securities | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 516 | 709 |
U.S. treasury and government securities | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
U.S. treasury and government securities | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Fixed income exchange-traded funds |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 1,872 | 3,102 |
Fixed income exchange-traded funds | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 1,872 | 3,102 |
Fixed income exchange-traded funds | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Fixed income exchange-traded funds | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Preferred securities |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 88 | 47 |
Preferred securities | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 88 | 47 |
Preferred securities | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Preferred securities | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Equities |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 9,516 | 7,861 |
Equities | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 9,516 | 7,861 |
Equities | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | 0 |
Equities | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 | $ 0 |
Note receivable from an unrelated private company |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 571 |  |
Note receivable from an unrelated private company | Quoted Prices in Active Markets (Level 1) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 |  |
Note receivable from an unrelated private company | Significant Other Observable Inputs (Level 2) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | 0 |  |
Note receivable from an unrelated private company | Significant Unobservable Inputs (Level 3) |  |  |
Pension plan assets at the fair value |  |  |
Fair value measurements | $ 571 |  |

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