Condensed Consolidated Balance Sheets - Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Accounts receivable:
Allowance for doubtful accounts	$ 3,363	$ 3,279
Other non-current assets:
Allowance for doubtful accounts	$ 3,533	$ 3,419
Shareholders’ equity:
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,882,000	5,882,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	30,022,000	24,412,000
Common stock, shares outstanding	29,982,000	24,372,000
Treasury stock, shares held	40,000	40,000