Property and Equipment, net (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 1,117	$ 1,171
Machinery and equipment	10,515	11,621
Property, Plant and Equipment, Gross, Total	11,632	12,792
Less: Accumulated depreciation	(9,906)	(10,214)
Property, Plant and Equipment, Net, Total	$ 1,726	$ 2,578