FAIR VALUE MEASUREMENTS - Schedule of Financial Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022	Jul. 01, 2022
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