Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements Of Operations [Abstract]
Net Sales	$ 20,433	$ 21,751	$ 39,702	$ 39,271
Cost of Sales	13,026	12,307	24,645	25,253
Gross Profit	7,407	9,444	15,057	14,018
Operating Expenses
Selling, general and administrative	4,497	4,469	8,921	8,756
Engineering, research and development	1,797	1,657	3,530	3,267
Severance, impairment and other charges	658	61	606	717
Total operating expenses	6,952	6,187	13,057	12,740
Operating Income	455	3,257	2,000	1,278
Other Income and (Expenses)
Interest expense, net	(42)	(61)	(84)	(118)
Foreign currency loss, net	(57)	(393)	(79)	(344)
Other income (expenses), net	(5)	23	25	24
Total other income and (expenses)	(104)	(431)	(138)	(438)
Income Before Income Taxes	351	2,826	1,862	840
Income Tax Benefit (Expense)	15	(302)	62	(671)
Net Income	$ 366	$ 2,524	$ 1,924	$ 169
Income Per Common Share
Basic	$ 0.04	$ 0.27	$ 0.20	$ 0.02
Diluted	$ 0.04	$ 0.27	$ 0.20	$ 0.02
Weighted Average Common Shares Outstanding
Basic	9,491	9,381	9,455	9,376
Dilutive effect of stock options	106	35	72	33
Diluted	9,597	9,416	9,527	9,409