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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
CONDENSED CONSOLIDATED BALANCE SHEETS    
Common stock, par value (in dollars per share) $ 0.005 $ 0.005
Common stock, shares authorized 240,000 240,000
Common stock, shares issued 200,873 198,729
Common stock, shares outstanding 176,421 174,277
Common stock in treasury, shares 24,452 24,452