Condensed Consolidated Balance Sheets - Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Accounts receivable:
Allowance for doubtful accounts	$ 98	$ 3,363
Other non-current assets:
Allowance for doubtful accounts	$ 3,561	$ 3,533
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	30,674,000	30,022,000
Common stock, shares outstanding	30,634,000	29,982,000
Treasury stock, shares held	40,000	40,000