Note 15 - Summary of Quarterly Results (Unaudited) - Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
		Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2024	Jun. 30, 2023
Net Sales		$ 129,007	$ 108,186	$ 109,005	$ 123,441	$ 123,636	$ 117,470	$ 128,804	$ 127,069	$ 469,638	$ 496,979
Gross Profit		33,833	31,210	31,536	36,589	35,863	32,204	34,140	34,738	133,168	136,945
Net Income		$ 5,668	$ 5,375	$ 5,906	$ 8,028	$ 8,414	$ 4,669	$ 6,417	$ 6,262	$ 24,977	$ 25,762
Basic (in dollars per share)		$ 0.19	$ 0.18	$ 0.2	$ 0.28	$ 0.3	$ 0.16	$ 0.23	$ 0.23	$ 0.86	$ 0.92
Diluted (in dollars per share)	[1]	0.19	0.18	0.2	0.27	0.28	0.16	0.22	0.22	0.83	0.88
Maximum [Member]
Share prices (in dollars per share)		16.07	15.47	16.75	16.05	14.12	15.88	12.39	8.81	16.75	15.88
Minimum [Member]
Share prices (in dollars per share)		$ 13.97	$ 13.4	$ 12.19	$ 11.9	$ 11.59	$ 12.17	$ 7.1	$ 5.7	$ 11.9	$ 5.7

[1] The total of the earnings per share for each of the four quarters does not equal the total earnings per share for the full year because the calculations are based on the average shares outstanding during each of the individual periods. There is no difference between basic and diluted shares due to losses.