Consolidated Balance Sheets - Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Accounts receivable:
Allowance for doubtful accounts	$ 133	$ 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 (in shares)	5,882,000	5,882,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	31,149,000	30,022,000
Common stock, shares outstanding (in shares)	31,109,000	29,982,000
Treasury stock, shares held (in shares)	40,000	40,000