Balance Sheet Components - Intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Schedule of Finite-lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	$ 19,051	$ 2,666
Less: accumulated amortization	(2,701)	(2,653)
Intangible Assets, Net (Excluding Goodwill)	16,350	13
Goodwill	269	269
Intangible assets, net	16,619	282
License fees
Schedule of Finite-lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	17,633	1,248
Trade name
Schedule of Finite-lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	268	268
Customer relationships
Schedule of Finite-lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Gross	1,150	$ 1,150
STMicro \| License fees
Schedule of Finite-lived Intangible Assets and Goodwill [Line Items]
Finite-Lived Intangible Assets, Net	$ 16,400

[Line Items] for Schedule of Finite-lived Intangible Assets and Goodwill [Table]

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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+ References

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