STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Detail) - Summary of restricted stock activity (Restricted Stock [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2010
Restricted Stock [Member]
Restricted Stock Shares Outstanding	3,109,947		2,231,524		1,623,385
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 10.85		$ 9.71		$ 9.55
Aggregated Intrinsic Value (in Dollars)	$ 493	[1]	$ 6,281	[1]	$ 2,422	[1]
Restricted Stock Weighted Average Contractual Term	2 years 292 days		2 years 6 months		3 years
Restricted Stock Shares Outstanding	439,500		1,415,700		713,637
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 9.33		$ 12.68		$ 11.36
Aggregated Intrinsic Value (in Dollars)	4,101	[1]	17,946	[1]	8,108	[1]
Restricted Stock Shares Outstanding	(41,045)		(407,268)		(52,998)
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 11.35		$ 10.67		$ 21.90
Aggregated Intrinsic Value (in Dollars)	428	[1]	5,209	[1]	707	[1]
Restricted Stock Shares Outstanding	(65,400)		(130,009)		(52,500)
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 11.13		$ 11.75		$ 14.79
Aggregated Intrinsic Value (in Dollars)	728	[1]	1,527	[1]	776	[1]
Restricted Stock Shares Outstanding	3,443,002		3,109,947		2,231,524
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 10.38		$ 10.85		$ 9.71
Aggregated Intrinsic Value (in Dollars)	$ 2,828	[1]	$ 493	[1]	$ 6,281	[1]
Restricted Stock Weighted Average Contractual Term	1 year 6 months		2 years 292 days		2 years 6 months

[1] Aggregated intrinsic value at the date the shares were outstanding, granted, vested or forfeited, as applicable.