RETIREMENT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Net periodic benefit (income) cost:
Interest cost	$ 103	$ 102
Expected return on plan assets	(192)	(167)
Amortization of net actuarial gain	0	0
Net periodic benefit (income) cost	(89)	(65)
Other disclosures
Estimated future Pension Plan contributions	0
SERP
Net periodic benefit (income) cost:
Interest cost	24	22
Expected return on plan assets	0	0
Amortization of net actuarial gain	(21)	(20)
Net periodic benefit (income) cost	$ 3	$ 2