Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Sep. 30, 2010
ASSETS
Allowances for accounts receivable	$ 3,728	$ 3,567
LIABILITIES AND STOCKHOLDERS' EQUITY
Discounts on total debt	$ 24,208	$ 23,617
Stockholders' equity:
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	75,687,528	75,669,381
Common stock, shares outstanding	75,687,528	75,669,381