Note 10 - Cash Dividends (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Nov. 30, 2025
Payments of Dividends, Total	$ 1.5	$ 1.5
Dividends Payable	$ 0.2	$ 0.1
Annual Indicated per Share Dividend Rate	$ 0.2
O2025Q3 Dividends [Member] \| Subsequent Event [Member]
Quarterly Indicated Per Share Dividend Rate			$ 0.05

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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