Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Consolidated Balance Sheets
Preferred stock, par value	$ 1	$ 1
Preferred Stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	17,190,481	17,125,270
Common stock, shares outstanding	17,190,481	17,125,270