STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) - Summary of restricted stock activity (Restricted Stock [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2010
Restricted Stock [Member]
STOCKHOLDERS' EQUITY AND EQUITY COMPENSATION (Details) - Summary of restricted stock activity [Line Items]
Restricted Stock Shares Outstanding	3,428,668		3,443,002		3,109,947		2,231,524
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 11.27		$ 10.38		$ 10.85		$ 9.71
Aggregated Intrinsic Value (in Dollars)	$ 4,827	[1]	$ 2,828	[1]	$ 493	[1]	$ 6,281	[1]
Restricted Stock Weighted Average Contractual Term	1 year 219 days		1 year 6 months		2 years 292 days		2 years 6 months
Restricted Stock Shares Outstanding	1,225,285		439,500		1,415,700
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 11.03		$ 9.33		$ 12.68
Aggregated Intrinsic Value (in Dollars)	13,517	[1]	4,101	[1]	17,946	[1]
Restricted Stock Shares Outstanding	(1,146,493)		(41,045)		(407,268)
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 8.42		$ 11.35		$ 10.67
Aggregated Intrinsic Value (in Dollars)	13,270	[1]	428	[1]	5,209	[1]
Restricted Stock Shares Outstanding	(93,126)		(65,400)		(130,009)
Restricted Stock Weighted Average Grant Price (in Dollars per share)	$ 10.35		$ 11.13		$ 11.75
Aggregated Intrinsic Value (in Dollars)	$ 978	[1]	$ 728	[1]	$ 1,527	[1]

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