Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
ASSETS
Allowances for accounts receivable	$ 4,099	$ 3,872
LIABILITIES AND STOCKHOLDERS’ EQUITY
Discounts on Total debt	$ 21,313	$ 23,243
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	180,000,000	180,000,000
Common stock, shares issued	101,196,954	75,588,396
Common stock, shares outstanding	101,196,954	75,588,396