RESTRUCTURING AND OTHER RELATED CHARGES (Details) - Summary of accrued liability for the restructuring and related charges (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
RESTRUCTURING AND OTHER RELATED CHARGES (Details) - Summary of accrued liability for the restructuring and related charges [Line Items]
Accrued liability	$ 3,857	$ 3,640	$ 2,657
Charges	8,946	4,689
Payments	(8,729)	(3,706)
Workforce Reduction [Member]
RESTRUCTURING AND OTHER RELATED CHARGES (Details) - Summary of accrued liability for the restructuring and related charges [Line Items]
Accrued liability	3,057	3,500	2,657
Charges	5,649	4,204
Payments	(6,092)	(3,361)
Facilities And Exit Costs [Member]
RESTRUCTURING AND OTHER RELATED CHARGES (Details) - Summary of accrued liability for the restructuring and related charges [Line Items]
Accrued liability	393	140
Charges	1,668	379
Payments	(1,415)	(239)
Other Related Costs [Member]
RESTRUCTURING AND OTHER RELATED CHARGES (Details) - Summary of accrued liability for the restructuring and related charges [Line Items]
Accrued liability	407
Charges	1,629	106
Payments	$ (1,222)	$ (106)