Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Statement Of Financial Position [Abstract]
Allowances for accounts receivable	$ 233	$ 574
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	41,517,839	41,284,485