Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||
| Cash flows from (used in) operating activities | — |
1 073
EUR
|
— |
1 889
EUR
|
— |
10 763
EUR
|
10 329
EUR
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
563,000
EUR
|
— |
563,000
EUR
|
— |
606,000
EUR
|
606,000
EUR
|
— | — | — |
| Interest received, classified as investing activities | — |
621,000
EUR
|
— |
621,000
EUR
|
— |
177,000
EUR
|
181,000
EUR
|
— | — | — |
| Cash flows from (used in) investing activities | — |
14 052
EUR
|
— |
13 483
EUR
|
— |
20 822
EUR
|
20 818
EUR
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||
| Payments of lease liabilities, classified as financing activities | — |
57,000
EUR
|
— |
60,000
EUR
|
— |
137,000
EUR
|
137,000
EUR
|
— | — | — |
| Proceeds from government grants, classified as financing activities | — |
4 499
EUR
|
— |
4 499
EUR
|
— |
6 029
EUR
|
6 029
EUR
|
— | — | — |
| Interest paid, classified as financing activities | — |
101,000
EUR
|
— |
116,000
EUR
|
— |
394,000
EUR
|
377,000
EUR
|
— | — | — |
| Cash flows from (used in) financing activities | — |
14 086
EUR
|
— |
13 490
EUR
|
— |
9 640
EUR
|
10 224
EUR
|
— | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
1 107
EUR
|
— |
1 896
EUR
|
— |
419,000
EUR
|
265,000
EUR
|
— | — | — |
| Cash and cash equivalents |
3 696
EUR
|
— |
2 782
EUR
|
— |
1 800
EUR
|
— | — |
1 675
EUR
|
1 940
EUR
|
2 219
EUR
|