Note 7 - Preferred Stock (Details Textual) - Series A Perpetual Preferred Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 1,000	$ 1,000
Preferred Stock, Dividend Rate, Cash, Percentage	8.00%	8.00%
Preferred Stock, Dividend Rate, Additional Preferred Stock, Percentage	8.50%	8.50%
Raycom [Member] | Preferred Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)		650,000