Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net Sales	$ 17,850	$ 21,442
Cost of Sales	10,808	13,150
Gross Profit	7,042	8,292
Operating Expenses
Selling, general and administrative	4,243	4,635
Engineering, research and development	1,828	2,198
Total operating expenses	6,071	6,833
Operating Income	971	1,459
Other Income and (Expenses)
Interest expense, net	(24)	(27)
Foreign currency (loss) gain, net	(211)	(202)
Other income, net	33
Total other income and (expense)	(202)	(229)
Income Before Income Taxes	769	1,230
Income Tax Expense	(143)	(276)
Net Income	$ 626	$ 954
Income Per Common Share
Basic	$ 0.06	$ 0.10
Diluted	$ 0.06	$ 0.10
Weighted Average Common Shares Outstanding
Basic	9,661	9,560
Dilutive effect of stock options	3	212
Diluted	9,664	9,772