RETIREMENT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Pension Plan
Net periodic benefit cost:
Interest cost	$ 97	$ 102	$ 195	$ 205
Expected return on plan assets	(200)	(191)	(400)	(383)
Amortization of net actuarial gain	0	0	0	0
Net periodic benefit (income) cost	(103)	(89)	(205)	(178)
Other disclosures
Estimated future contributions	0		0
SERP
Net periodic benefit cost:
Interest cost	24	24	47	48
Expected return on plan assets	0	0	0	0
Amortization of net actuarial gain	0	(22)	0	(43)
Net periodic benefit (income) cost	24	$ 2	47	$ 5
Other disclosures
Estimated future contributions	$ 76		$ 76