CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data	Jun. 30, 2011	Sep. 30, 2010
Accounts receivable, allowances for doubtful accounts	$ 5,721	$ 6,301
Series B preferred stock, par value	$ 0.001	$ 0.001
Series B preferred stock, shares authorized	15,000	15,000
Series B preferred stock, shares issued	3,562	3,562
Series B preferred stock, shares outstanding	3,562	3,562
Series B preferred stock, Liquidation preference	$ 4,631	$ 4,631
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	560,000	560,000
Common stock, shares issued	307,958	301,623
Common stock, shares outstanding	304,207	297,950
Treasury stock, shares	3,751	3,673