Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Jun. 30, 2012
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	34,154,728	33,788,871
Treasury stock, shares at cost	4,676,082	4,353,200