Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net Sales	$ 19,132	$ 21,553	$ 36,982	$ 42,995
Cost of Sales	12,001	13,703	22,809	26,853
Gross Profit	7,131	7,850	14,173	16,142
Operating Expenses
Selling, general and administrative	4,309	4,942	8,552	9,577
Engineering, research and development	1,632	2,080	3,460	4,278
Severance, impairment and other charges	471	(609)	471	(609)
Total operating expenses	6,412	6,413	12,483	13,246
Operating Income	719	1,437	1,690	2,896
Other Income and (Expenses)
Interest expense, net	(43)	(29)	(67)	(56)
Foreign currency gain (loss), net	32	151	(179)	(51)
Other income, net	91	5	124	5
Total other income and (expense)	80	127	(122)	(102)
Income Before Income Taxes	799	1,564	1,568	2,794
Income Tax (Expense) Benefit	(48)	45	(191)	(231)
Net Income	$ 751	$ 1,609	$ 1,377	$ 2,563
Income Per Common Share
Basic	$ 0.08	$ 0.17	$ 0.14	$ 0.27
Diluted	$ 0.08	$ 0.16	$ 0.14	$ 0.26
Weighted Average Common Shares Outstanding
Basic	9,693	9,615	9,674	9,588
Dilutive effect of stock options	5	76	13	143
Diluted	9,698	9,691	9,687	9,731