RETIREMENT PLANS (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Pension Plan
Retirement plans
Service cost	$ 68,000	$ 76,000	$ 204,000	$ 227,000
Interest cost	75,000	81,000	224,000	242,000
Expected return on plan assets	(96,000)	(82,000)	(290,000)	(246,000)
Amortization of prior service cost (credit)	1,000	1,000	4,000	4,000
Amortization of net actuarial loss (gain)	25,000	28,000	77,000	84,000
Net periodic benefit cost	73,000	104,000	219,000	311,000
Contribution by the entity to the Pension Plan			250,000
SERP
Retirement plans
Service cost	13,000	12,000	39,000	37,000
Interest cost	15,000	15,000	44,000	46,000
Amortization of prior service cost (credit)	(1,000)		(4,000)
Amortization of net actuarial loss (gain)	5,000	4,000	15,000	12,000
Net periodic benefit cost	32,000	31,000	94,000	95,000
Postretirement Medical
Retirement plans
Service cost	4,000	3,000	11,000	9,000
Interest cost	12,000	12,000	37,000	37,000
Amortization of prior service cost (credit)	34,000	34,000	102,000	102,000
Amortization of net actuarial loss (gain)		(2,000)		(8,000)
Net periodic benefit cost	$ 50,000	$ 47,000	$ 150,000	$ 140,000