Note 10 - Reinsurance (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2021
Catastrophe Bond, Face Value		$ 200,000	$ 275,000	$ 400,000
Catastrophe [Member]
Reinsurance, Amount Retained, Per Event	$ 17,500
Earthquake [Member]
Reinsurance Policy, Excess of Loss Protection Amount	2,710
Hawaii Hurricane [Member]
Reinsurance Policy, Excess of Loss Protection Amount	800,000
U.S. Hurricane [Member]
Reinsurance Policy, Excess of Loss Protection Amount	$ 100,000