CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2012	Sep. 30, 2011
Shareholders' equity:
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized shares (in shares)	4,579,000	4,579,000
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)	44,260,000	44,260,000
Common stock, shares issued (in shares)	20,817,000	20,817,000
Common stock, shares outstanding (in shares)	16,642,000	16,642,000
Treasury stock, shares (in shares)	4,175,000	4,175,000