Income Taxes (Deferred tax assets and liabilities for federal and state income taxes) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Deferred tax assets:
Federal & State NOL carryforward	$ 181	$ 1,144
Research & other credits	1,832	1,790
Reserves and accruals	180	337
Inventory	446	432
Other intangibles	178	237
Goodwill	77	89
Other	1	5
Total gross deferred tax assets	2,895	4,034
Less: valuation allowance	(89)	(3,773)
Total deferred tax assets	2,806	261
Deferred tax liabilities:
Property and equipment, principally due to differing depreciation methods	(438)	(261)
Goodwill	(295)
Other intangibles	(2)
Other	(23)
Total gross deferred tax liabilities	(758)	(261)
Net deferred tax assets	$ 2,048