Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Jun. 30, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Series A junior participating preferred stock, shares designated	50,000	50,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	59,402,425	59,004,028
Common stock, shares outstanding	59,402,425	59,004,028