Consolidated Balance Sheet (Parantheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
Accounts receivable:
Allowance for doubtful accounts	$ 3,213	$ 3,332
Other non-current assets:
Allowance for doubtful accounts	$ 3,501	$ 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	50,000	50,000
Common stock, shares issued	23,947	23,521
Common stock, shares outstanding	23,907	23,481
Treasury stock, shares held	40	40