CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts (in Dollars)	$ 150,000	$ 160,000
Preferred stock par value (in Dollars per share)	$ 1.66	$ 1.66
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Common stock par value (in Dollars per share)	$ 1.66	$ 1.66
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	5,212,491	5,200,689
Common stock, shares outstanding	5,212,491	5,200,689