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Stockholders' Equity Matters (Tables)
6 Months Ended
Jun. 30, 2011
Stockholders' Equity Matters  
Schedule of dividend declared and payments

In the first six months of 2011, our board of directors declared the following dividends:

Declaration
Date
  Dividend
Per Share
  Record
Date
  Total
Amount
  Payment
Date
March 11, 2011   $ 0.1875   March 25, 2011   $ 37,601   April 15, 2011
June 10, 2011   $ 0.2500   June 24, 2011   $ 50,694   July 15, 2011