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Consolidated Balance Sheets (Parenthetical) (USD $)
Sep. 30, 2014
Dec. 31, 2013
Statement of Financial Position [Abstract]    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 125,000,000 125,000,000
Common stock, shares issued 20,781,000 20,491,000
Common stock, shares outstanding 18,247,000 19,756,000
Treasury stock, shares 2,534,000 735,000