Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
Jun. 30, 2022 USD ($) Segment shares	Jun. 30, 2021 USD ($) Segment shares
Significant Accounting Policies (Textual)
Additional uncertain tax provisions \| $	$ 0
Number of operating segments \| Segment	1	1
Number of reportable segments \| Segment	1
In-process research and development \| $		$ 16,094,000
Property and equipment estimated useful life	three years
Series C Preferred Share Warrants [Member]
Significant Accounting Policies (Textual)
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	2,100,000	2,100,000
Series C Convertible Preferred Shares [Member]
Significant Accounting Policies (Textual)
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	14,497,000	17,295,000
Stock options [Member]
Significant Accounting Policies (Textual)
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	8,810,000	6,392,000
Warrant [Member]
Significant Accounting Policies (Textual)
Anti-dilutive warrants, stock options, performance stock units, and convertible preferred shares related to outstanding	36,024,000	6,974,000

In-progress research and development expense.

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- Definition

Significant Accounting Policies Textual [Abstract]

+ References

No definition available.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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- Definition

Amount recognized for uncertainty in income taxes classified as noncurrent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126905813&loc=d3e1205-110223

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