RESTRUCTURING AND OTHER RELATED CHARGES (Detail) - Activity in restructuring accrual recorded in accrued liabilities (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Accrued liability	$ 2,657	$ 1,541
Charges	4,689	7,543	4,180
Payments	(4,515)	(6,427)
Accrued liability	2,831	2,657	1,541
Workforce Reduction [Member]
Accrued liability	2,657	1,541
Charges	4,204	3,789	602
Payments	(4,310)	(2,673)
Accrued liability	2,551	2,657	1,541
Facilities And Exit Costs [Member]
Accrued liability	0	0
Charges	379	1,809	2,549
Payments	(205)	(1,809)
Accrued liability	174	0	0
Other Related Costs [Member]
Accrued liability	0	0
Charges	106	1,945	1,029
Payments	0	(1,945)
Accrued liability	$ 106	$ 0	$ 0