EMPLOYEE BENEFIT PLANS (Details) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
EMPLOYEE BENEFIT PLANS
Accumulated Benefit Obligation	$ 102,680,000	$ 112,062,000
Changes in projected benefit obligations
Projected benefit obligation at beginning of year	112,062,000	104,911,000
Interest cost	4,339,000	4,498,000	4,519,000
Actuarial (gain) loss	(9,320,000)	5,990,000
Benefits paid	(4,401,000)	(3,337,000)
Projected benefit obligation at end of year	102,680,000	112,062,000	104,911,000
Change in plan assets
Fair value of plan assets at beginning of year	86,718,000	67,284,000
Actual return on plan assets	12,369,000	14,495,000
Employer contribution	2,132,000	8,276,000
Benefits paid	(4,401,000)	(3,337,000)
Fair value of plan assets at end of year	96,818,000	86,718,000	67,284,000
Funded status of the plan at end of year	(5,862,000)	(25,344,000)
Amounts Recognized in the Consolidated Balance Sheets
Accrued liabilities	(145,000)	(95,000)
Noncurrent liabilities-other	(5,717,000)	(25,249,000)
Net amount recognized	(5,862,000)	(25,344,000)
Amounts recognized in accumulated other comprehensive income and not yet reflected in net periodic benefit cost
Net actuarial loss	(19,210,000)	(37,172,000)
Prior service cost		(1,000)
Total	(19,210,000)	(37,173,000)
Net actuarial loss, which is expected to be amortized in next year's periodic benefit cost	900,000
Weighted average assumptions used for the pension calculations
Discount rate for net periodic benefit costs (as a percent)	4.06%	4.33%	4.48%
Discount rate for year-end obligations (as a percent)	4.80%	4.06%	4.33%
Expected return on plan assets (as a percent)	7.06%	7.16%	8.00%
Components of the net periodic pension expense (benefit)
Interest cost	4,339,000	4,498,000	4,519,000
Expected return on plan assets	(6,099,000)	(5,463,000)	(5,050,000)
Amortization of prior service cost	1,000	2,000
Recognized net actuarial loss	2,372,000	3,567,000	2,976,000
Settlement/curtailment			28,000
Net pension expense (benefit)	613,000	2,604,000	2,473,000
Expected benefits to be paid from the Pension Plan
2014	5,314,000
2015	5,903,000
2016	6,494,000
2017	5,979,000
2018	7,612,000
2019-2023	36,529,000
Total	67,831,000
PLAN ASSETS
Target Allocation (as a percent)	100.00%
Percentage of Plan Assets	100.00%	100.00%
Estimated contributions
PLAN ASSETS
Estimated contribution by the employer in next fiscal year to Pension Plan	$ 100,000
U.S. equities
PLAN ASSETS
Target Allocation (as a percent)	55.00%
Percentage of Plan Assets	58.00%	55.00%
International equities
PLAN ASSETS
Target Allocation (as a percent)	15.00%
Percentage of Plan Assets	13.00%	12.00%
Fixed income
PLAN ASSETS
Target Allocation (as a percent)	27.00%
Percentage of Plan Assets	27.00%	25.00%
Real estate and other
PLAN ASSETS
Target Allocation (as a percent)	3.00%
Percentage of Plan Assets	2.00%	8.00%