RETIREMENT PLANS (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Plan
Retirement Plans
Service Cost	$ 76,000	$ 74,000	$ 227,000	$ 223,000
Interest Cost	81,000	78,000	242,000	233,000
Expected return on plan assets	(82,000)	(74,000)	(246,000)	(222,000)
Amortization of prior service cost	1,000	1,000	4,000	4,000
Amortization of net actuarial loss (gain)	28,000	21,000	84,000	64,000
Net periodic benefit cost	104,000	100,000	311,000	302,000
Contribution by the entity to the Pension Plan			670,000
SERP
Retirement Plans
Service Cost	12,000	12,000	37,000	34,000
Interest Cost	15,000	14,000	46,000	43,000
Amortization of prior service cost		1,000		3,000
Amortization of net actuarial loss (gain)	4,000	4,000	12,000	11,000
Net periodic benefit cost	31,000	31,000	95,000	91,000
Postretirement Medical
Retirement Plans
Service Cost	3,000	4,000	9,000	12,000
Interest Cost	12,000	17,000	37,000	51,000
Amortization of prior service cost	34,000	34,000	102,000	102,000
Amortization of net actuarial loss (gain)	(2,000)	2,000	(8,000)	6,000
Net periodic benefit cost	$ 47,000	$ 57,000	$ 140,000	$ 171,000