RESTRUCTURING CHARGES AND SEVERANCE CHARGES - Restructuring Activities for Scottsdale Facility and the Accrued Liabilities in the Consolidated Balance Sheets (Details) (Scottsdale Facility, USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 5,965
Reversal of prior provision	(117)
Cash expenditures	(779)
Ending Balance	5,069
Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	117
Reversal of prior provision	(117)
Cash expenditures	0
Ending Balance	0
Facility Termination Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	5,848
Reversal of prior provision	0
Cash expenditures	(779)
Ending Balance	$ 5,069