EMPLOYEE BENEFIT PLANS (Detail) - Schedule of net periodic costs (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Net periodic costs (benefits)
Service cost	$ 20
Pension Plans, Defined Benefit [Member]
Net periodic costs (benefits)
Service cost	238	377	529
Interest cost	9,191	9,552	1,645
Expected return on plan assets	(11,896)	(11,501)	(1,371)
Amortization of:
Prior service costs	6	8	9
Actuarial loss	1,735	1,144	1,064
Total net periodic costs (benefits)	(726)	(420)	1,876
Supplemental Benefits [Member]
Net periodic costs (benefits)
Service cost	36	34	29
Interest cost	1,692	1,759	1,984
Expected return on plan assets	0	0	0
Amortization of:
Prior service costs	171	328	328
Actuarial loss	1,137	1,141	986
Total net periodic costs (benefits)	$ 3,036	$ 3,262	$ 3,327