Schedule of Changes in Estimated Fair Value of Warrant Liability (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Fair value measurements Significant unobservable inputs [Line Items]
Beginning balance			$ 22,355
Change in estimated fair value of liability classified warrants	$ 5,458	$ 7,083	8,046	$ 20,307
Ending balance	14,309		14,309
Fair Value, Measurements, Recurring [Member] \| Level 3
Fair value measurements Significant unobservable inputs [Line Items]
Beginning balance			22,355	40,483
Change in estimated fair value of liability classified warrants			(8,046)	(20,307)
Ending balance	$ 14,309	$ 20,176	$ 14,309	$ 20,176

Fair Value Measurements, Significant Unobservable Inputs [Line Items]

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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=123874694&loc=d3e19207-110258

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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=123874694&loc=d3e19207-110258

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