CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) (USD $)	Dec. 31, 2011	Sep. 30, 2011
Equity:
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
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)	49,000,000	49,000,000
Common stock, shares issued (in shares)	28,779,998	28,779,998
Common stock issued shares, non-vested restricted shares (in shares)	644,723	649,007
Treasury stock shares (in shares)	9,313,932	9,126,966