Note 8 - Preferred Stock (Details Textual)		12 Months Ended
	Jan. 28, 2022 shares	Dec. 31, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares	Jan. 25, 2022 $ / shares shares	Dec. 31, 2021 shares
Preferred Stock, Shares Authorized (in shares)		3,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.01
Conversion of Series B Preferred Stock into Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)		854,753	1,145,247
Conversion of Stock, Shares Issued (in shares)		1,282,129	1,717,870
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)		307,129
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)		2,445,598	2,445,598
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.01	$ 0.01
Preferred Stock, Shares Outstanding, Ending Balance (in shares)		0	0
Series A Preferred Stock [Member] | Maximum [Member]
Preferred Stock, Shares Authorized (in shares)					3,000,000
Series B Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)		2,000,000	2,000,000	2,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.01	$ 0.01	$ 0.01
Preferred Stock, Convertible, Conversion Ratio				1.5
Stock Issued During Period, Shares, New Issues (in shares)	2,000,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares)		650,000	854,753
Preferred Stock, Convertible, Shares Issuable (in shares)		975,000	1,282,129