11. OTHER ASSETS - Other assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Down payment for purchase of investment properties	$ 1,645	$ 1,645
Down payment for purchase of property, plant and equipment	561	280
Deposit for rental and utilities	140	139
Currency translation effect	(97)	(142)
Ending balance	$ 2,249	$ 1,922