Note 1 - Nature of Operations (Details Textual)		3 Months Ended	9 Months Ended
	May 11, 2023 USD ($) shares	Jun. 30, 2023 USD ($)	Sep. 30, 2023
Number of Operating Segments			3
Stock Issued During Period, Value, New Issues		$ 19,244,000
At-the-Market Issuance Sales Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	921,797
Aggregate Offering Price of Stock	$ 20,000
Stock Issued During Period, Value, New Issues	$ 19,244
Commission Fee, Percentage of Gross Proceeds	3.00%