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Intangible Assets (Details) - EUR (€) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | € 1,228,000 | € 1,543,000 | € 1,806,000
Increases | (293,000) | (314,000) | (264,000)
Balance at the end | 935,000 | 1,228,000 | 1,543,000
Amortization charges | 300,000 | 300,000 | 300,000
Gross |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | 3,674,000 | 3,646,000 | 3,540,000
Increases | 0 | 29,000 | 106,000
Balance at the end | 3,674,000 | 3,674,000 | 3,646,000
Amortization and impairment |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | (2,446,000) | (2,103,000) | (1,733,000)
Increases | (293,000) | (343,000) | (369,000)
Balance at the end | (2,739,000) | (2,446,000) | (2,103,000)
Library of compounds | Gross |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | 2,142,000 | 2,142,000 | 2,142,000
Balance at the end | 2,142,000 | 2,142,000 | 2,142,000
Library of compounds | Amortization and impairment |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | (1,157,000) | (993,000) | (828,000)
Increases | (165,000) | (165,000) | (165,000)
Balance at the end | (1,322,000) | (1,157,000) | (993,000)
Software licenses | Gross |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | 1,533,000 | 1,504,000 | 1,398,000
Increases | 0 | 29,000 | 106,000
Balance at the end | 1,533,000 | 1,533,000 | 1,504,000
Software licenses | Amortization and impairment |  |  |
Reconciliation of changes in intangible assets other than goodwill [abstract] |  |  |
Balance at the beginning | (1,289,000) | (1,110,000) | (906,000)
Increases | (129,000) | (179,000) | (204,000)
Balance at the end | € (1,417,000) | € (1,289,000) | € (1,110,000)

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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_vi&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_c&doctype=Standard -URIDate 2020-01-01 + Details
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