Consolidated Balance Sheet (Parantheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Sep. 30, 2011
Accounts receivable:
Allowance for doubtful accounts	$ 3,245	$ 3,332
Other non-current assets:
Allowance for doubtful accounts	$ 3,434	$ 3,641
Shareholders' equity:
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,882	5,882
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00	$ 0.00
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	94,228	94,084
Common stock, shares outstanding	94,069	93,925
Treasury stock, shares held	159	159