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Schedule of Changes in Estimated Fair Value of Warrant Liability (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Fair value measurements Significant unobservable inputs [Line Items] |  |  |
Beginning balance | $ 17,613 | $ 17,600 |
Change in estimated fair value of liability classified warrants | 22,870 | (27,632) | $ 9,705
Ending balance | 40,483 | 17,613 | 17,600
Fair Value, Measurements, Recurring [Member] | Level 3 |  |  |
Fair value measurements Significant unobservable inputs [Line Items] |  |  |
Beginning balance | 17,613 | 46,313 |
Reclassification of derivative liability to equity upon exercise of warrants |  | (1,068) |
Change in estimated fair value of liability classified warrants | 22,870 | (27,632) |
Ending balance | $ 40,483 | $ 17,613 | $ 46,313

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- Definition Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Fair value portion of warrants not settleable in cash classified as equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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