RETIREMENT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Plan
Net periodic benefit cost:
Service cost	$ 64	$ 0	$ 192	$ 118
Interest cost	89	73	267	242
Expected return on plan assets	(125)	(113)	(375)	(323)
Amortization of prior service cost (credit)	1	1	4	4
Amortization of net actuarial loss (gain)	21	(3)	64	15
Net periodic benefit cost	50	(42)	152	56
Other disclosures
Contribution by the entity to the Pension Plan			250
SERP
Net periodic benefit cost:
Service cost	15	12	46	35
Interest cost	19	17	57	50
Amortization of prior service cost (credit)	(1)	(1)	(3)	(4)
Amortization of net actuarial loss (gain)	6	2	18	4
Net periodic benefit cost	39	30	118	85
Postretirement Medical
Net periodic benefit cost:
Service cost	0	3	0	9
Interest cost	13	13	39	40
Amortization of prior service cost (credit)	0	3	0	9
Amortization of net actuarial loss (gain)	(1)	(5)	(4)	(15)
Net periodic benefit cost	$ 12	$ 14	$ 35	$ 43