EMPLOYEE BENEFIT PLANS (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Jan. 31, 2012 Adjusted Funding Target Attaiment Percent [Member]	Sep. 30, 2012 Adjusted Funding Target Attaiment Percent [Member]	Sep. 30, 2012 Employee Benefit Plans [Member]	Sep. 30, 2011 Employee Benefit Plans [Member]	Sep. 30, 2012 Supplemental Employee Retirement Plans, Defined Benefit [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 7,300	$ 7,500	$ 5,200
Postemployment Benefits Liability	2,262	2,177
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	42,761	37,680	23,605			79	78
Pension and Other Postretirement Benefit Expense						76	175
Change In Discount Rate	10.00%
Tax Benefit For Amortization Of Pension Cost	1,067	917	835
Defined Benefit Plan, Actuarial Gain (Loss)	3,360
Defined Benefit Plan, Service Cost	20
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	2,628							3,951
Defined Benefit Plan, Target Plan Asset Allocations	100.00%			94.50%	80.00%
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	2,802
Actual Return Non Plan Assets	159
Commingled Fund For Private Equity	16
Maximum Compensation Of Proportion	245
Employee Stock Ownership Plan (ESOP), Compensation Expense	1,796	841	1,011
Employee Stock Ownership Plan (ESOP), Deferred Shares, Fair Value	$ 21,993	$ 19,761