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Operating Expense - Additional Information (Details) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 EUR (€) employee | Dec. 31, 2020 EUR (€) employee | Dec. 31, 2019 EUR (€) employee
Disclosure Of Operating Expense [Line Items] |  |  |
Average number of employees | employee | 122 | 193 | 175
Share-based compensation annual expense | € 470 | € 1,236 | € 1,656
Profit sharing granted to employees | 628 | € 0 | € 0
Reorganization of vacant premises | 679 |  |
Restructuring provision |  |  |
Disclosure Of Operating Expense [Line Items] |  |  |
Unused provision reversed, other provisions | 352 |  |
Administrative Cost, Destruction Of Drug Tablets |  |  |
Disclosure Of Operating Expense [Line Items] |  |  |
Unused provision reversed, other provisions | 366 |  |
Office equipment | Property, plant and equipment subject to operating leases [member] |  |  |
Disclosure Of Operating Expense [Line Items] |  |  |
Reversal of impairment loss recognised in profit or loss | 441 |  |
Computer equipment | Property, plant and equipment not subject to operating leases [member] |  |  |
Disclosure Of Operating Expense [Line Items] |  |  |
Reversal of impairment loss recognised in profit or loss | € 374 |  |

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- Definition The amount of reversal of impairment loss recognised in profit or loss. [Refer: Reversal of impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 126 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_126_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2021-01-01 -Paragraph 129 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2021-en-r&anchor=para_129_b&doctype=Standard -URIDate 2021-03-24 + Details
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