Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data	Jun. 30, 2011	Sep. 30, 2010
Current assets
Allowances for accounts receivable	$ 375	$ 444
Shareholders' equity
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	50,000	50,000
Preferred stock, shares designated	16,750	16,750
Preferred stock, shares issued	16,426	16,344
Preferred stock, shares outstanding	16,426	16,344
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	10,681	9,816
Common stock, shares outstanding	10,681	9,816