STOCK COMPENSATION - Performance Shares (Details) - $ / shares	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Number of Units
Shares outstanding, beginning of period (in shares)	474,348	547,063
Granted (in shares)	135,417	178,631
Vested (in shares)	(229,803)	(230,323)
Forfeited or expired (in shares)	(9,811)	(21,023)
Shares outstanding, end of period (in shares)	370,151	474,348
Weighted Average Fair Value at Grant
Shares outstanding, beginning of period (in dollars per share)	$ 36.52	$ 30.22
Granted (in dollars per share)	36.68	55.56
Vested (in dollars per share)	37.46	35.70
Forfeited or expired (in dollars per share)	41.14	43.45
Shares outstanding, end of period (in dollars per share)	$ 35.87	$ 36.52
PSUs
Number of Units
Shares outstanding, beginning of period (in shares)	96,689
Granted (in shares)	59,115
Vested (in shares)	0
Forfeited or expired (in shares)	0
Shares outstanding, end of period (in shares)	155,804	96,689
Weighted Average Fair Value at Grant
Shares outstanding, beginning of period (in dollars per share)	$ 42.59
Granted (in dollars per share)	38.94
Vested (in dollars per share)	0
Forfeited or expired (in dollars per share)	0
Shares outstanding, end of period (in dollars per share)	$ 41.20	$ 42.59