Note 8 - Preferred Stock (Details Textual)		12 Months Ended
	Jan. 28, 2022 shares	Dec. 31, 2022 $ / shares shares	Jan. 25, 2022 $ / shares shares	Dec. 31, 2021 $ / shares 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)		1,145,247
Conversion of Stock, Shares Issued (in shares)		1,717,870
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
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	0
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)		854,753		0
Preferred Stock, Convertible, Shares Issuable (in shares)		1,282,129