CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
CONDENSED CONSOLIDATED BALANCE SHEETS
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.60	$ 0.60
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	18,236,121	13,962,366
Common stock, shares outstanding	16,785,721	12,511,966
Treasury stock	1,450,400	1,450,400