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Balance Sheet Components - Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 30, 2018
Other Assets [Abstract]
Deferred service costs, non-current	$ 3,473	$ 3,583
Non-marketable equity securities	2,878
Non-marketable equity securities		3,539
Restricted cash included in other assets	2,301	2,202
Investment in auction rate security	1,571	1,571
Deposits	607	671
Prepaid expense, non-current	1,763	2,471
Total other assets	$ 12,593	$ 14,037

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Amount of securities that are debt instruments (corporate or municipal bonds) that typically have long-term nominal maturities for which the interest rate is reset through an auction process.

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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.

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Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer.

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Sum of the carrying amounts as of the balance sheet date of amounts paid in advance for expenses which will be charged against earnings in periods after one year or beyond the operating cycle, if longer.

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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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