Note 11 - Cash Dividends (Details Textual) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Apr. 30, 2025
Payments of Dividends, Total	$ 4.5	$ 4.3
Dividends Payable	$ 0.2	$ 0.2
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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