Condensed Consolidated Balance Sheets (Current Period Unaudited)-parentheticals (Parentheticals) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss, Current	$ 4,789	$ 4,789
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	2,497,500	2,497,500
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0	0
Preferred Stock, Shares Issued (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	200,000,000	200,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)	68,104,957	68,104,957
Common Stock, Shares, Issued (in shares)	68,104,957	68,104,957
Series C Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	1,500	1,500
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	11.469249	11.5
Preferred Stock, Shares Issued (in shares)	11.469249	11.5
Preferred Stock, Liquidation Preference, Value	$ 114,692	$ 114,692
Series D Convertible Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	2,500,000	2,500,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	907,144	907,144
Series D Preferred Stock [Member]
Preferred Stock, Shares Issued (in shares)	907,144	907,144
Preferred Stock, Liquidation Preference, Value	$ 907,144	$ 907,144