Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Allowance for doubtful accounts receivable, current	$ 508	$ 496
Preferred stock, par or stated value per share (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par or stated value per share (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	70,000,000	70,000,000
Common Stock, shares, issued (shares)	27,594,000	26,448,000
Common stock, shares, outstanding (in shares)	27,594,000	26,448,000