Property and Equipment, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Property and Equipment [Abstract]
Leasehold improvements	$ 2,723	$ 2,807
Machinery and equipment	14,075	14,196
Property and equipment, gross	16,798	17,003
Less: Accumulated depreciation	(14,350)	(14,835)
Property and equipment, total	2,448	2,168
Depreciation expense for property and equipment	1,580	1,618	$ 1,863
Net book value	0	0
Asset retirement obligation [Roll Forward]
Asset retirement obligation, June 30, 2014	413
Accretion of asset retirement obligation	0
Payment of restoration costs	0
Impact of foreign exchange rates	(74)
Asset retirement obligation, June 30, 2015	$ 339	$ 413