Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 54,944	$ 49,998	$ 158,408	$ 158,976
Cost of goods sold	36,795	35,154	107,082	107,793
Gross margin	$ 18,149	$ 14,844	$ 51,326	$ 51,183
% of net sales	0.00%	0.00%	0.00%	0.00%
Selling, general and administrative expenses	$ 13,511	$ 14,780	$ 41,126	$ 46,912
Restructuring charges	788	0	1,518	0
Gain on sale of building	0	0	(3,204)	0
Operating income	3,850	64	11,886	4,271
Other income (expense), net	663	223	236	(833)
Income before income taxes	4,513	287	12,122	3,438
Income tax expense (benefit)	1,496	(326)	1,132	787
Net income	$ 3,017	$ 613	$ 10,990	$ 2,651
Basic income per share (in dollars per share)	$ 420	$ 90.00	$ 1,560	$ 380
Diluted income per share (in dollars per share)	$ 410	$ 90.00	$ 1,500	$ 380
Weighted average outstanding shares used in per share calculations:
Basic (in shares)	7,104	6,962	7,058	6,941
Diluted (in shares)	7,390	7,022	7,335	7,017