CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
CONSOLIDATED BALANCE SHEETS
Preferred stock, par value (in dollars per share)	$ 2.00	$ 2.00
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 2.00	$ 2.00
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	6,079,854	6,048,506
Common stock, shares outstanding	5,848,242	5,816,894
Treasury stock, shares	231,612	231,612