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CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Statement Of Financial Position [Abstract]    
Preferred stock, par value (in dollar per share) $ 0.10 $ 0.10
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares issued      
Common stock, par value (in dollar per share) $ 0.10 $ 0.10
Common stock, shares authorized 74,000,000 74,000,000
Common stock, shares issued 37,820,521 37,375,469
Common stock, shares outstanding 37,820,521 37,375,469