RESTRUCTURING AND OTHER RELATED CHARGES (Detail) - Summary of restructuring and other related charges (USD $)	3 Months Ended				6 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Mar. 31, 2012
Amounts incurred in:
Amounts incurred in	$ 9,336,000	$ 1,108,000	$ 0	$ 1,795,000	$ 10,444,000	$ 1,795,000
Employee Severance [Member]
Amounts incurred in:
Amounts incurred in	3,795,000	994,000	0	1,538,000	4,789,000	1,538,000
Facility Closing [Member]
Amounts incurred in:
Amounts incurred in	523,000	39,000	0	257,000	562,000	257,000
Other Restructuring [Member]
Amounts incurred in:
Amounts incurred in	1,517,000	75,000	0	0	1,592,000	0
Non-cash Facility and Other [Member]
Amounts incurred in:
Amounts incurred in	$ 3,501,000	$ 0	$ 0	$ 0	$ 3,501,000	$ 0