CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) (USD $)	Mar. 31, 2013	Sep. 30, 2012
Shareholders' equity:
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized shares (in shares)	4,579	4,579
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	44,260	44,260
Common stock, shares issued (in shares)	20,898	20,817
Common stock, shares outstanding (in shares)	16,722	16,642
Treasury stock, shares (in shares)	4,175	4,175