STOCK-BASED COMPENSATION - NARRATIVE (Details) - USD ($) $ in Millions		12 Months Ended
	Apr. 25, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)		2,620,389
Performance Shares, Market Condition Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		54,693	39,614	44,965
Performance Shares, Subject to Performance Conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		88,107	73,047	73,561
Deferred compensation related to unvested performance shares, period		1 year 8 months 12 days
Performance Shares, Subject to Performance Conditions | Vesting September 30, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		50,504
Performance Shares, Subject to Performance Conditions | Vesting Annually Over Three Year Period Beginning September 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		37,603
Award vesting period		3 years
Performance Shares, Subject to Performance Conditions | Vesting September 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)			42,449
Performance Shares, Subject to Performance Conditions | Vesting Annually Over Three Year Period Beginning September 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)			30,598
Award vesting period			3 years
Performance Shares, Subject to Performance Conditions | Vesting September 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)				44,596
Performance Shares, Subject to Performance Conditions | Vesting Annually Over Three Year Period Beginning September 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)				28,965
Award vesting period				3 years
Performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		218,959	190,255	192,121	166,091
Deferred compensation related to unvested restricted and performance shares		$ 6.0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		125,500	108,876	97,824	101,621
Deferred compensation related to unvested restricted and performance shares		$ 1.7
Deferred compensation related to unvested performance shares, period		1 year 9 months 18 days
Restricted Stock | Vesting Annually Over Three Year Period Beginning October 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)		67,522
Award vesting period				3 years
Restricted Stock | Vesting Annually Over Three Year Period Beginning October 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)			64,080
Award vesting period		3 years
Restricted Stock | Vesting Annually Over Three Year Period Beginning October 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)				54,826
Award vesting period			3 years
Restricted Stock | Vesting Annually Over Three Year Period Beginning April 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted but not issued (in shares)	3,465
Award vesting period	3 years