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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2019
Dec. 31, 2018
Stockholders' Equity:    
Preferred stock, par value (USD per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares outstanding 0 0
Common stock, par value (USD per share) $ 0.01 $ 0.01
Common stock, shares authorized 20,000,000 20,000,000
Common stock, shares outstanding 7,877,945 7,776,164
Treasury Stock, Shares 3,806,355 3,790,308