RESTRUCTURING CHARGES AND SEVERANCE CHARGES - Restructuring Activities and Accrued Liabilities in the Consolidated Balance Sheets (Details) (Other Facilities, USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 2,314
Provisions	7,228
Cash expenditures	(5,379)
Other non-cash settlement	(204)
Ending Balance	3,959
Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2,124
Provisions	7,098
Cash expenditures	(5,146)
Other non-cash settlement	(201)
Ending Balance	3,875
Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	190
Provisions	103
Cash expenditures	(206)
Other non-cash settlement	(3)
Ending Balance	84
Other Associated Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0
Provisions	27
Cash expenditures	(27)
Other non-cash settlement	0
Ending Balance	$ 0