Composition of Certain Financial Statement Items (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Depreciation expenses	$ 505	$ 486
Depreciated assets	130
Cost basis of assets classified as discontinued operations	410
Accumulated amortization recorded for fixed assets classified as discontinued operations	346
Amortization expense	50	$ 117
Aggregate cost basis of investments	663
Gross unrealized losses	33
Income taxes on investments	22
Huber Precision [Member] | Customer list and backlog [Member]
Impairment charge	$ 113