Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2012	Jun. 30, 2011
Consolidated Balance Sheets
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	43,436,404	43,185,203
Common stock, shares outstanding	41,721,537	43,185,203
Treasury stock, shares	1,714,867