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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Sep. 30, 2017
Dec. 31, 2016
CONDENSED CONSOLIDATED BALANCE SHEETS    
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, shares authorized 4,000,000 4,000,000
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 35,000,000 35,000,000
Common stock, shares issued 21,766,463 21,704,851
Common stock, shares outstanding 21,718,018 21,656,406
Treasury stock, shares 48,445 48,445