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Intangible Assets - Schedule of Variations in Intangible Assets (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | € 297 | € 920 | € 796
Increase | (26) | (102) | 438
Decrease | (96) | (27) | (313)
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | 174 | 297 | 920
Decrease due to changes in accounting policy required by IFRSs, cumulative effect at date of initial application |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 495 |  |
Balance |  | 495 |
Gross |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 1,531 | 2,830 | 2,384
Increase | 126 | 207 | 788
Decrease | (293) | (715) | (342)
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | 1,364 | 1,531 | 2,830
Gross | Software |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 1,440 | 2,739 | 2,049
Increase | 126 | 231 | 653
Decrease | (255) | (691) | (29)
Translation adjustments | 0 | 0 | 0
Reclassification | (17) | (48) | 378
Balance | 1,294 | 1,440 | 2,739
Gross | Patents |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 91 | 91 | 21
Increase | 0 | 0 | 70
Decrease | (21) | 0 | 0
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | 70 | 91 | 91
Gross | Other Intangibles |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 0 | 0 | 313
Increase | 0 | (24) | 65
Decrease | (17) | (25) | (313)
Translation adjustments | 0 | 0 | 0
Reclassification | 17 | 48 | (378)
Balance | 0 | 0 | 0
Accumulated Depreciation and Impairment |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | (1,234) | (1,910) | (1,588)
Increase | (152) | (310) | (350)
Decrease | 197 | 688 | 29
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | (1,190) | (1,234) | (1,910)
Accumulated Depreciation and Impairment | Software |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | (1,213) | (2) | (1,567)
Increase | (152) | (309) | (350)
Decrease | 176 | 688 | 29
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | (1,190) | (1,213) | (2)
Accumulated Depreciation and Impairment | Patents |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | (21) | (21) | (21)
Increase | 0 | 0 | 0
Decrease | 21 | 0 | 0
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | 0 | (21) | (21)
Accumulated Depreciation and Impairment | Other Intangibles |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Balance | 0 | 0 | 0
Increase | 0 | 0 | 0
Decrease | 0 | 0 | 0
Translation adjustments | 0 | 0 | 0
Reclassification | 0 | 0 | 0
Balance | € 0 | € 0 | € 0

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- Definition Additions other than through business combinations and amortisation, intangible assets other than goodwill, + References No definition available. + Details
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- Definition The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2021-03-24 + Details
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