Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 372	$ 508
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)	29,060,000	27,594,000
Common stock, shares, outstanding (in shares)	29,060,000	27,594,000