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FAIR VALUE MEASUREMENTS - Schedule of Financial Assets Measured at Fair Value (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Sep. 30, 2022 | Jul. 01, 2022
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Rabbi trust assets | $ 25,304 | $ 21,436 | $ 24,238
Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Rabbi trust assets | 25,304 | 21,436 | 24,238
Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Rabbi trust assets | 0 | 0 | 0
Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Rabbi trust assets | $ 0 | $ 0 | $ 0

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