Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Accumulated Depreciation, Depletion and Amortization	$ 3,855,869	$ 3,817,000
Preferred stock, par value (in dollars per share)	$ 0.03	$ 0.03
Preferred stock, shares authorized (in shares)	333,306	333,306
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.03	$ 0.03
Common stock, shares authorized (in shares)	3,333,334	3,333,334
Common stock, shares issued (in shares)	976,330	975,074
Common stock, shares outstanding (in shares)	976,330	975,074