Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Summary of Significant Accounting Policies - Additional Information (Details)

v3.22.4

Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, € in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Segment $ / shares	Dec. 31, 2022 EUR (€)	Aug. 17, 2022 $ / shares	Dec. 31, 2021 USD ($) $ / shares	Jan. 28, 2021 $ / shares
Accounting Policies [Line Items]
Ordinary shares, par value \| $ / shares	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Recognized income tax positions measured at largest amount greater than percentage of being realized	50.00%
Number of business segments \| Segment	1
Defined Contribution Plan, Tax Status [Extensible Enumeration]	us-gaap:QualifiedPlanMember
Inventory	$ 0			$ 0
Milestone payments	$ 0
October 2020 Offering
Accounting Policies [Line Items]
Ordinary shares, par value \| $ / shares	$ 0.01			$ 0.01
June 3, 2020 SPA
Accounting Policies [Line Items]
Ordinary shares, par value \| $ / shares	0.01			0.01
June 30, 2020 SPA
Accounting Policies [Line Items]
Ordinary shares, par value \| $ / shares	$ 0.01			$ 0.01
Certificates Of Deposit
Accounting Policies [Line Items]
Restricted cash				$ 30,000
Warrants Issued \| October 2020 Offering
Accounting Policies [Line Items]
Restricted cash	$ 11,000			11,000
Warrants Issued \| June 3, 2020 SPA
Accounting Policies [Line Items]
Restricted cash	17,000			17,000
Warrants Issued \| June 30, 2020 SPA
Accounting Policies [Line Items]
Restricted cash	6,000			$ 6,000
Maximum
Accounting Policies [Line Items]
Cash, Federal Deposit Isurance Corporation insured amount	250,000
Cash, DGS insured amount	$ 107,000	€ 100
Defined contribution plan, employee minimum percentage of total plan assets	60.00%
Defined contribution plan, maximum deferral rate	3.00%

- Definition

Accounting policies.

+ References

No definition available.

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- Definition

Cash Deposit Guarantee Scheme insured amount.

+ References

No definition available.

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- Definition

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- Definition

Defined contribution plan employee minimum percentage on plan assets.

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- Definition

Milestone payment.

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No definition available.

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- Definition

Recognized income tax positions measured at largest amount greater than percentage of being realized.

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No definition available.

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- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Indicates tax status of defined contribution plan designed to provide retirement benefits.

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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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.

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- Definition

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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