Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net Sales	$ 62,262	$ 76,822
Cost of Sales	38,957	49,630
Gross Profit	23,305	27,192
Operating Expenses
Selling, general and administrative	17,245	18,980
Engineering, research and development	6,105	8,040
Severance, impairment and other charges	3,307	6,930
Total operating expenses	26,657	33,950
Operating Loss	(3,352)	(6,758)
Other Income and (Expense)
Interest expense, net	(136)	(252)
Foreign currency loss, net	(558)	(90)
Other income, net	407	97
Total other income and (expense)	(287)	(245)
Loss Before Income Taxes	(3,639)	(7,003)
Income Tax (Expense) Benefit	(332)	212
Net Loss	$ (3,971)	$ (6,791)
Loss Per Common Share
Basic and Diluted	$ (0.41)	$ (0.71)
Weighted Average Common Shares Outstanding
Basic and Diluted	9,697	9,612