Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||
| Cash flows from (used in) operating activities [abstract] | ||||||
| Income taxes paid (refund), classified as operating activities | — |
2,000
EUR
|
— |
—
EUR
|
—
EUR
|
— |
| Cash flows from (used in) operating activities | — |
56 770
EUR
|
— |
51 720
EUR
|
43 310
EUR
|
— |
| Cash flows from (used in) investing activities [abstract] | ||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
—
EUR
|
— |
83,000
EUR
|
—
EUR
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
298,000
EUR
|
— |
1 139
EUR
|
20 117
EUR
|
— |
| Purchase of intangible assets, classified as investing activities | — |
—
EUR
|
— |
2,000
EUR
|
16,000
EUR
|
— |
| Proceeds from sales of other long-term assets, classified as investing activities | — |
145,000
EUR
|
— |
4,000
EUR
|
414,000
EUR
|
— |
| Purchase of other long-term assets, classified as investing activities | — |
192,000
EUR
|
— |
421,000
EUR
|
119,000
EUR
|
— |
| Cash flows from (used in) investing activities | — |
345,000
EUR
|
— |
1 475
EUR
|
19 838
EUR
|
— |
| Cash flows from (used in) financing activities [abstract] | ||||||
| Proceeds from issuing shares | — |
34 631
EUR
|
— |
118,000
EUR
|
—
EUR
|
— |
| Proceeds from issuing other equity instruments | — |
—
EUR
|
— |
12,000
EUR
|
47,000
EUR
|
— |
| Proceeds from borrowings, classified as financing activities | — |
12 157
EUR
|
— |
27 134
EUR
|
—
EUR
|
— |
| Repayments of borrowings, classified as financing activities | — |
—
EUR
|
— |
62,000
EUR
|
738,000
EUR
|
— |
| Payments of lease liabilities, classified as financing activities | — |
1 702
EUR
|
— |
1 615
EUR
|
978,000
EUR
|
— |
| Interest paid, classified as financing activities | — |
374,000
EUR
|
— |
326,000
EUR
|
195,000
EUR
|
— |
| Other inflows (outflows) of cash, classified as financing activities | — |
—
EUR
|
— |
—
EUR
|
38,000
EUR
|
— |
| Cash flows from (used in) financing activities | — |
44 712
EUR
|
— |
25 449
EUR
|
40,000
EUR
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
1 656
EUR
|
— |
981,000
EUR
|
1 910
EUR
|
— |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
10 747
EUR
|
— |
28 727
EUR
|
61 198
EUR
|
— |
| Cash and cash equivalents |
33 699
EUR
|
— |
44 446
EUR
|
— | — |
73 173
EUR
|