Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, liquidation value	0.000067	0.000067
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares designated	825,000	825,000
Preferred stock, shares issued	10,000	10,000
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	33,333,333	33,333,333
Common stock, shares issued	7,863,340	3,986,719
Common stock, shares, outstanding	7,862,602	3,985,981
Treasury stock (shares)	738	738