Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Statement Of Financial Position [Abstract]
Allowances for accounts receivable	$ 206	$ 233
Preferred stock, par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Common stock, par value
Common stock, shares authorized	71,000,000	71,000,000
Common stock, shares issued	41,555,653	41,517,839