Note 8 - Shareholders' Equity (Details Textual)	12 Months Ended
	Dec. 31, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares
Common Stock, Shares Authorized (in shares)	1,000,000,000	1,000,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	10,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.01
Common Stock, Voting Rights, Votes	1
Convertible Preferred Stock, Shares, Designated Maximum (in shares)	10,000,000
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	4,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Series C Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	500,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Series D Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	2,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0