Consolidated Balance Sheets Parenthetical - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Stockholders' Equity
Common stock, par value	$ 2.00	$ 2.00
Common stock, shares authorized	7,500,000	7,500,000
Common stock, shares issued	4,948,245	4,943,690
Treasury stock, shares	476,268	477,011