Balance Sheet Components - Other Assets (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	9 Months Ended
Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014
Balance Sheet Related Disclosures [Abstract]
Prepaid royalty license		$ 1,059us-gaap_PrepaidRoyalties		$ 1,246us-gaap_PrepaidRoyalties
Restricted cash		838		450
Investment in a privately held company		1,411us-gaap_CostMethodInvestments		750us-gaap_CostMethodInvestments
Others		535		408
Total other assets		3,843us-gaap_OtherAssets		2,854us-gaap_OtherAssets
Payment made for an investment in a privately held company	$ 661	$ 661	$ 0

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Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

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-Publisher FASB

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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No definition available.

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The cash outflow associated with other investments held by the entity for investment purposes not otherwise defined in the taxonomy.

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Amount of asset related to consideration paid in advance for royalties that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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-Glossary Current Assets

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Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

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-Publisher SEC

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