Note 5 - Redeemable Preferred Stock (Details Textual) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Dec. 27, 2019	Mar. 31, 2020	Jun. 30, 2024	Dec. 31, 2023	Nov. 14, 2019	Nov. 26, 2014
Class B Preferred Units [Member]
Preferred Units, Issued (in shares)					50,500,000
Preferred Unit Purchase Price (in dollars per share)					$ 1
Preferred Units Issued, Percentage of Preferred Return					16.00%
Preferred Units Issued, Maximum Percentage Points of Preferred Return in Form of Issuance of Additional Units or Cash					6.00%
Additional Preferred Units Issued (in shares)		50,000,000
Series A Preferred Stock [Member]
Preferred stock, shares issued (in shares)	400,000		400,000	400,000
Preferred stock, liquidation preference	$ 40		$ 40	$ 40
Preferred Stock, Dividend Rate, Percentage	6.00%
Temporary Equity, Redemption Price Per Share (in dollars per share)	$ 100
Temporary Equity, Conversion Price Per Share (in dollars per share)	$ 10
Dove Ventures, LLC [Member] | Senior Secured Term Loan Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 40
Extinguishment of Debt, Amount	$ 40