Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (parenthetical)

 v2.3.0.11
Balance Sheets (parenthetical) (USD $)
Jun. 30, 2011
Dec. 31, 2010
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Treasury stock at cost 4,833,284 4,833,284
Common Class A [Member]
   
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 29,693,961 27,925,649
Common stock, shares outstanding 24,860,677 23,092,365
Common Class B [Member]
   
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 144,000,000 144,000,000
Common stock, shares issued 18,000,000 18,000,000
Common stock, shares outstanding 18,000,000 18,000,000