Note 7 - Earnings (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) (Parentheticals) - shares	Jun. 30, 2024	Dec. 31, 2023
Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	256,636	256,636
Series A Preferred Stock [Member] \| Public Holders [Member]
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	95,226
Series C Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	231,944	231,944

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details