Balance Sheet Components - Accounts receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
Balance Sheet Related Disclosures [Abstract]
Accounts receivable	$ 50,014	$ 48,401
Less: Allowance for price adjustments	(32,514)	(24,075)
Less: Allowance for doubtful accounts	(30)	(30)
Accounts receivable, net	$ 17,470	$ 24,296

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4531-111522

Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant