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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Statement Of Financial Position [Abstract]    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 500 500
Preferred stock, shares issued      
Preferred stock, shares outstanding      
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 125,000 125,000
Common stock, shares issued 20,545 20,491
Common stock, shares outstanding 18,997 19,756
Treasury stock, shares 1,548 735