Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net Sales	$ 84,693	$ 77,947	$ 69,135
Cost of Sales	52,693	50,178	47,996
Gross Profit	32,000	27,769	21,139
Operating Expenses
Selling, general and administrative	18,469	17,347	20,316
Engineering, research and development	7,980	6,826	7,381
Severance, impairment and other charges	603	1,777	2,826
Total operating expenses	27,052	25,950	30,523
Operating Income (Loss)	4,948	1,819	(9,384)
Other Income and (Expense)
Interest expense, net	(181)	(264)	(148)
Foreign currency gain (loss), net	(397)	(333)	144
Other income (expense), net	119	40	171
Total other income and (expense)	(459)	(557)	167
Income (Loss) Before Income Taxes	4,489	1,262	(9,217)
Income Tax Expense	(773)	(1,430)	(12,896)
Net Income (Loss)	$ 3,716	$ (168)	$ (22,113)
Income (Loss) Per Common Share
Basic	$ 0.39	$ (0.02)	$ (2.36)
Diluted	$ 0.39	$ (0.02)	$ (2.36)
Weighted Average Common Shares Outstanding
Basic	9,469	9,382	9,360
Dilutive effect of stock options	110	0	0
Diluted	9,579	9,382	9,360