Note 15 - Summary of Quarterly Results (Unaudited) - Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended														12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Mar. 21, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022		Dec. 31, 2021		Sep. 30, 2021		Jun. 30, 2021	[1]	Jun. 30, 2023	Jun. 30, 2022
Net Sales	$ 123,636	$ 117,470		$ 128,804	$ 127,069	$ 127,469	$ 110,111		$ 111,143		$ 106,397				$ 496,979	$ 455,120
Gross Profit	35,863	32,204		34,140	34,738	32,457	26,793		25,448		24,510				136,945	109,208
Net Income	$ 8,414	$ 4,669		$ 6,417	$ 6,262	$ 5,176	$ 3,618		$ 3,105		$ 3,133				$ 25,762	$ 15,032
Basic (in dollars per share)	$ 0.30		$ 0.16	$ 0.23	$ 0.23	$ 0.19	$ 0.13		$ 0.11		$ 0.12				$ 0.92	$ 0.55
Diluted (in dollars per share)	0.28	$ 0.16		0.22	0.22		0.13	[1]	0.11	[1]	0.11	[1]	$ 0.18		0.88	0.54	[1]
Maximum [Member]
Share prices (in dollars per share)	14.12	15.88		12.39	8.81	7.66	7.49		8.42		8.43				15.88	8.43
Share prices (in dollars per share)	14.12	15.88		12.39	8.81	7.66	7.49		8.42		8.43				15.88	8.43
Minimum [Member]
Share prices (in dollars per share)	11.59	12.17		7.10	5.70	5.53	6.00		6.41		7.12				5.70	5.53
Share prices (in dollars per share)	$ 11.59	$ 12.17		$ 7.10	$ 5.70	$ 5.53	$ 6.00		$ 6.41		$ 7.12				$ 5.70	$ 5.53

[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.