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Schedule of Changes in Estimated Fair Value of Warrant Liability (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Fair value measurements Significant unobservable inputs [Line Items] |  |  |  |
Beginning balance |  |  | $ (40,483) |
Change in estimated fair value of liability classified warrants | $ 7,083 | $ (8,439) | 20,307 | $ 830
Ending balance | (20,176) |  | (20,176) |
Fair Value, Measurements, Recurring [Member] | Level 3 |  |  |  |
Fair value measurements Significant unobservable inputs [Line Items] |  |  |  |
Beginning balance |  |  | (40,483) | (17,613)
Change in estimated fair value of liability classified warrants |  |  | 20,307 | 830
Ending balance | $ (20,176) | $ (16,783) | $ (20,176) | $ (16,783)

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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 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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