Condensed Consolidated Balance Sheets - Parenthetical (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Accounts receivable:
Allowance for doubtful accounts	$ 3,378	$ 3,279
Other non-current assets:
Allowance for doubtful accounts	$ 3,413	$ 3,641
Shareholders’ equity:
Preferred stock, par value (in dollars per share)	$ 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	$ 0
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	26,773	23,521
Common stock, shares outstanding	26,733	23,481
Treasury stock, shares held	40	40