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Balance Sheet Components - Other current assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Balance Sheet Related Disclosures [Abstract]
VAT receivable	$ 25,722	$ 17,601
Other prepaid expenses	2,417	2,121
Prepaid Insurance	1,109	906
Prepaid Maintenance, Current	685	556
Prepayment to supplier	735	227
Prepaid income tax	761	761
Customs deposit	26	5,749
Lease Financing Costs, Current	910	960
Other receivable	390	670
Other Assets, Current	$ 32,755	$ 29,551

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Amount of current assets classified as other.

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-Name Accounting Standards Codification
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-Section S99
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