EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Pension Plan, Defined Benefit [Member]
EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees [Line Items]
2014	$ 10,794
2015	10,866
2016	11,049
2017	11,192
2018	11,322
2019 through 2023	59,464
Supplemental Benefits [Member]
EMPLOYEE BENEFIT PLANS (Details) - Estimated future benefit payments to retirees [Line Items]
2014	4,085
2015	4,010
2016	3,954
2017	3,895
2018	3,453
2019 through 2023	$ 14,632