QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended							12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Mar. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Restructuring And Other Related Charges	$ 1,881	$ 1,167	$ 1,833	$ 1,377	$ 788	$ 905		$ 3,048	$ 4,903
Business Combination, Acquisition Related Costs	194	116						310
Fair Value Of Acquired Inventory Sold					2,462	7,387			9,849
Gains (Losses) on Extinguishment of Debt							$ (16,813)	$ 0	$ (26,164)	$ (1,117)