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Consolidated Balance Sheets (March 31, 2020 Unaudited) Consolidated Balance Sheets Parenthetical - $ / shares
Mar. 31, 2020
Dec. 31, 2019
Stockholders' Equity    
Common stock, par value $ 2.00 $ 2.00
Common stock, shares authorized 7,500,000 7,500,000
Common stock, shares issued 4,949,246 4,948,245
Treasury stock, shares 476,046 476,268