Prepaid research and development related expenses.

No definition available.

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- Definition

Tranche of the Term Loan and the remaining loan amount which is available at the Company’s discretion

+ References

No definition available.

+ Details

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586

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Balance Type:	credit
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

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Period Type:	instant

- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

This is the result of the principal amount outstanding of total loans managed or securitized less securitized loans and loans that are in the process of being securitized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

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Period Type:	instant

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- Details

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Subsequent Events - Additional Information (Detail) € / shares in Units, $ / shares in Units, $ in Thousands, € in Millions			1 Months Ended	6 Months Ended
	Jul. 31, 2022 USD ($)	Jul. 31, 2022 EUR (€) € / shares	Aug. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 $ / shares	Jun. 30, 2021 € / shares
Deposit paid				$ 3,828	$ 2,692
Debt conversion price \| (per share)						$ 1,654	€ 1,350
Hercules
Tranche of the Term Loan				The first tranche of the Term Loan was funded upon closing in August 2022 and the remaining loan amount is available at the Company’s discretion through August 1, 2026 (“Maturity Date”), except in the case of certain tranches, which are subject to achievement of certain performance milestones or approvals, as applicable.
Hercules \| Subsequent Event [Member]
Principal Amount			$ 175,000
Minimum [Member] \| Hercules \| Subsequent Event [Member]
Term Loan Maturity			48 months
Maximum [Member] \| Hercules \| Subsequent Event [Member]
Term Loan Maturity			54 months
2018 Convertible Notes [Member] \| Subsequent Event [Member]
Debt conversion price \| € / shares		€ 17.00
Aggregate Amount of Notes Conversion	$ 3,600	€ 3.6