Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net Sales	$ 21,553	$ 20,433	$ 42,995	$ 39,702
Cost of Sales	13,703	13,026	26,853	24,645
Gross Profit	7,850	7,407	16,142	15,057
Operating Expenses
Selling, general and administrative	4,942	4,497	9,577	8,921
Engineering, research and development	2,080	1,797	4,278	3,530
Severance, impairment and other charges	(609)	658	(609)	606
Total operating expenses	6,413	6,952	13,246	13,057
Operating Income	1,437	455	2,896	2,000
Other Income and (Expenses)
Interest expense, net	(29)	(42)	(56)	(84)
Foreign currency gain (loss), net	151	(57)	(51)	(79)
Other income (expenses), net	5	(5)	5	25
Total other income and (expenses)	127	(104)	(102)	(138)
Income Before Income Taxes	1,564	351	2,794	1,862
Income Tax (Expense) Benefit	(17)	15	(355)	62
Net Income	$ 1,547	$ 366	$ 2,439	$ 1,924
Income Per Common Share
Basic	$ 0.16	$ 0.04	$ 0.25	$ 0.20
Diluted	$ 0.16	$ 0.04	$ 0.25	$ 0.20
Weighted Average Common Shares Outstanding
Basic	9,615	9,491	9,588	9,455
Dilutive effect of stock options	76	106	143	72
Diluted	9,691	9,597	9,731	9,527