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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Statement Of Financial Position [Abstract]    
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 60,000,000 60,000,000
Common stock, shares issued 20,555,330 20,555,330
Deferred compensation trust, shares 109,256 109,256
Treasury stock, shares 16,061,912 16,121,605