Consolidated Balance Sheets (Parentheticals) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts	$ 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 Issued (in shares)	0	0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	0	0
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
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, Issued (in shares)	68,104,957	68,104,957
Common stock, shares outstanding (in shares)	68,104,957	68,104,957
Series C 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 Issued (in shares)	11.47	11.47
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	11.469249	11.47
Preferred Stock, Liquidation Preference, Value	$ 114,692	$ 114,692
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Liquidation Preference, Value	$ 114,692	$ 114,692
Series D 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 Issued (in shares)	907,144	907,144
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	907,144	907,144
Preferred Stock, Liquidation Preference, Value	$ 907,144	$ 907,144
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, Liquidation Preference, Value	$ 907,144	$ 907,144