Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Jun. 30, 2013
Consolidated Balance Sheets [Abstract]
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	47,819,299	45,592,550
Common stock, shares outstanding	47,819,299	45,592,550
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury shares, shares outstanding	15,883,212	13,455,090