EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	$ 153,731	$ 160,833
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	29
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Cash and Cash Equivalents [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	29
Short Term Investment Funds [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Short Term Investment Funds [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	2,949	5,231
Short Term Investment Funds [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Short Term Investment Funds [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	2,949	5,231
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	3,006	0
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	2,899
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
US Government Agencies Debt Securities [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	3,006	2,899
Debt Instruments [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	30,856	0
Debt Instruments [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	30,616
Debt Instruments [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Debt Instruments [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	30,856	30,616
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	47,690	62,713
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Equity Securities [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	47,690	62,713
Commingled Funds [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Commingled Funds [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	66,130	56,329
Commingled Funds [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Commingled Funds [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	66,130	56,329
Limited Partnerships And Hedge Fund Investments [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	0
Limited Partnerships And Hedge Fund Investments [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	3,101	0
Limited Partnerships And Hedge Fund Investments [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	0	3,016
Limited Partnerships And Hedge Fund Investments [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	3,101	3,016
Insurance Contracts [Member] | Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets		0
Insurance Contracts [Member] | Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets		0
Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets		0
Insurance Contracts [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets		0
Fair Value, Inputs, Level 1 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	81,552	62,742
Fair Value, Inputs, Level 2 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	72,180	95,075
Fair Value, Inputs, Level 3 [Member]
EMPLOYEE BENEFIT PLANS (Details) - Pension and post-retirement plan assets by asset category [Line Items]
Defined Benefit Plan Fair Value Of Plan Assets	$ 0	$ 3,016