Note 19 - Summary of Quarterly Results (Unaudited) - Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended												12 Months Ended
		Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2026		Jun. 30, 2025	Jun. 30, 2024
Net Sales		$ 234,621	$ 150,525	$ 147,002	$ 157,249	$ 155,067	$ 132,481	$ 147,734	$ 138,095	$ 129,006	$ 108,186	$ 109,005	$ 123,441
Gross Profit		57,415	38,239	37,434	40,277	40,429	32,843	34,861	33,647	33,833	31,210	31,536	36,589	$ 173,365		$ 141,780	$ 133,168
Net Income		$ 6,876	$ 2,091	$ 6,348	$ 7,264	$ 8,171	$ 3,883	$ 5,647	$ 6,682	$ 5,668	$ 5,375	$ 5,906	$ 8,028	$ 22,579		$ 24,383	$ 24,977
Basic (in dollars per share)		$ 0.19	$ 0.06	$ 0.2	$ 0.24	$ 0.27	$ 0.13	$ 0.19	$ 0.23	$ 0.19	$ 0.18	$ 0.2	$ 0.28	$ 0.69		$ 0.82	$ 0.86
Diluted (in dollars per share)		0.18	0.06	0.2	0.23	0.26	0.13	0.18	0.22	0.19	0.18	0.2	0.27	$ 0.67		$ 0.79	$ 0.83
Maximum [Member]
Share prices (in dollars per share)		26.8	23.25	23.73	23.83	17.43	24.72	20.86	17.06	16.07	15.47	16.75	16.05
Minimum [Member]
Share prices (in dollars per share)		$ 18.51	$ 18.22	$ 17.25	$ 17.24	$ 14.65	$ 17	$ 15.88	$ 13.9	$ 13.97	$ 13.4	$ 12.19	$ 11.9
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance, Beginning of Period					$ 1,152				$ 848				$ 435	$ 1,152		$ 848	$ 435
Additions Charged to Costs and Expenses														47		333	(8)
Additions From Company Acquired														750		73	477
Deductions	[1]													(54)		(102)	(56)
Balance, End of Period		$ 1,895				$ 1,152				$ 848				1,895		1,152	848
SEC Schedule, 12-09, Reserve, Inventory [Member]
Balance, Beginning of Period					8,025				6,838				6,288	8,025		6,838	6,288
Additions Charged to Costs and Expenses														1,175		2,339	1,058
Additions From Company Acquired														5,300		662	1,428
Deductions														(1,819)	[1]	(1,814)	(1,936)
Balance, End of Period		12,681				8,025				6,838				12,681		8,025	6,838
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance, Beginning of Period					$ 108				$ 108				$ 108	108		108	108
Additions Charged to Costs and Expenses														0		0	0
Additions From Company Acquired														0		0	0
Deductions														0		0	0
Balance, End of Period		$ 108				$ 108				$ 108				108		108	108
Fiscal Year [Member]
Net Sales														689,397		573,377	469,638
Gross Profit														173,365		141,780	133,168
Net Income														$ 22,579		$ 24,383	$ 24,977
Basic (in dollars per share)														$ 0.69		$ 0.82	$ 0.86
Diluted (in dollars per share)														0.67		0.79	0.83
Fiscal Year [Member] | Maximum [Member]
Share prices (in dollars per share)														26.8		24.72	16.75
Fiscal Year [Member] | Minimum [Member]
Share prices (in dollars per share)														$ 17.24		$ 13.9	$ 11.9

[1] For Allowance for credit lo, deductions are uncollectible accounts charged off, less recoveries.