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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
shares in Thousands
Dec. 31, 2015
Dec. 31, 2014
Nov. 10, 2010
CONSOLIDATED BALANCE SHEETS      
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01
Preferred stock, shares authorized 20,000 20,000  
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 120,000 120,000  
Common stock, shares issued 65,496 49,793  
Common stock, shares outstanding 65,496 49,793