Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Dec. 31, 2013	Sep. 30, 2013
Statement of Financial Position [Abstract]
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	30,565,685	30,264,224
Treasury stock, shares	4,673,917	4,708,965