EMPLOYEE BENEFIT PLANS (Details) - Weighted-average assumptions used in determining the net periodic benefit costs	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Defined Benefits [Member]
EMPLOYEE BENEFIT PLANS (Details) - Weighted-average assumptions used in determining the net periodic benefit costs [Line Items]
Discount rate	3.98%	4.49%	3.67%
Average wage increase	0.00%	0.15%	0.11%
Expected return on assets	8.00%	8.00%	7.80%
Supplemental Benefits [Member]
EMPLOYEE BENEFIT PLANS (Details) - Weighted-average assumptions used in determining the net periodic benefit costs [Line Items]
Discount rate	3.50%	4.09%	3.40%
Average wage increase	0.00%	0.00%	4.87%
Expected return on assets	0.00%	0.00%	0.00%