Note 10 - Stockholders' Equity (Details Textual) - USD ($)		3 Months Ended			9 Months Ended
	Jul. 03, 2023	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Aug. 19, 2024	Jul. 03, 2024	Jun. 29, 2023
Common Stock, Shares Authorized		150,000,000	150,000,000		150,000,000
Preferred Stock, Shares Authorized		5,000,000	5,000,000		5,000,000
Preferred Stock, Par or Stated Value Per Share		$ 0.0001	$ 0.0001		$ 0.0001
Preferred Stock, Convertible, Conversion Price							$ 1
Dividends		$ 321,000		$ 193,000		$ 193,000
Conversion of Series A Preferred Stock to Common Stock [Member]
Conversion of Stock, Shares Converted			102		1,691
Conversion of Stock, Shares Issued			76,440		1,391,183
Registered Direct Offering [Member]
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 2,036,000
Minimum [Member]
Investment Owned, Net Assets, Percentage								4.99%
Maximum [Member]
Investment Owned, Net Assets, Percentage								9.99%
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized	10,000	10,000			10,000
Preferred Stock, Convertible, Conversion Price	$ 1.45
Preferred Stock, Dividend Rate, Percentage	8.00%
Preferred Stock, Convertible, Share Price Threshold	$ 8
Preferred Stock, Convertible, Trading Volume Threshold	$ 2,000,000
Dividends					$ 1,017,000
Dividends Payable		$ 818,000			$ 818,000
Series A Preferred Stock [Member] | Registered Direct Offering [Member]
Preferred Stock, Par or Stated Value Per Share									$ 0.0001
Preferred Stock, Convertible, Conversion Price									$ 1.45
Series A Preferred Stock [Member] | Minimum [Member]
Preferred Stock, Convertible, Conversion Price								$ 1.414
Series A Preferred Stock [Member] | Post Triggering Event [Member]
Preferred Stock, Dividend Rate, Percentage	20.00%