Note 4 - Acquisition of Royston Group - Pro Forma Information (Details) - Royston [Member] - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Sales	$ 872,167	$ 844,489	$ 750,149
Gross Profit	213,437	208,906	196,006
Business Combination, Pro Forma Information, Pro Forma Income (Loss) from Continuing Operations, after Tax	$ 48,424	$ 56,590	$ 56,344

Amount of pro forma revenue of combined entity as if acquisition date of business combination occurred as of beginning of period.

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