Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
457,645,315
EUR
|
446,106,451
EUR
|
438,877,277
EUR
|
425,978,241
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
942,603
EUR
|
870,086
EUR
|
1,372,176
EUR
|
1,250,530
EUR
|
— | — |
| Investment property [abstract] | ||||||
| Investment property |
15,324,069
EUR
|
23,467,367
EUR
|
15,530,234
EUR
|
23,975,120
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
0
EUR
|
4,048,063
EUR
|
0
EUR
|
4,048,063
EUR
|
— | — |
| Investments in associates reported in separate financial statements |
16,361,004
EUR
|
6,737,709
EUR
|
15,784,793
EUR
|
6,737,709
EUR
|
— | — |
| Trade and other non-current receivables [abstract] | ||||||
| Trade and other non-current receivables |
39,991
EUR
|
39,991
EUR
|
39,991
EUR
|
39,991
EUR
|
— | — |
| Miscellaneous non-current assets [abstract] | ||||||
| Non-current investments other than investments accounted for using equity method |
48,989,127
EUR
|
45,758,319
EUR
|
59,972,076
EUR
|
56,587,335
EUR
|
— | — |
| Other non-current assets |
216,640
EUR
|
216,640
EUR
|
9,650,187
EUR
|
9,650,187
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Trade and other current receivables |
60,178,626
EUR
|
59,622,532
EUR
|
47,326,339
EUR
|
46,773,388
EUR
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
1,596,208
EUR
|
1,596,208
EUR
|
1,422,438
EUR
|
1,422,438
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
94,749,216
EUR
|
69,095,661
EUR
|
40,638,685
EUR
|
16,342,426
EUR
|
61,021,421
EUR
|
37,051,470
EUR
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||||||
| Non-current assets or disposal groups classified as held for distribution to owners |
0
EUR
|
0
EUR
|
340,807
EUR
|
485,000
EUR
|
— | — |
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
54,315,463
EUR
|
54,315,463
EUR
|
60,688,522
EUR
|
60,688,522
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings |
8,336,093
EUR
|
8,336,093
EUR
|
10,521,175
EUR
|
10,521,175
EUR
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Trade and other non-current payables [abstract] | ||||||
| Trade and other non-current payables |
1,145,239
EUR
|
1,105,802
EUR
|
143,693
EUR
|
106,025
EUR
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Trade and other current payables |
57,286,363
EUR
|
56,078,955
EUR
|
41,324,946
EUR
|
40,329,201
EUR
|
— | — |
| Issued capital [abstract] | ||||||
| Issued capital |
58,420,965
EUR
|
58,420,965
EUR
|
58,420,965
EUR
|
58,420,965
EUR
|
— | — |
| Retained earnings [abstract] | ||||||
| Retained earnings |
85,232,746
EUR
|
50,229,864
EUR
|
63,769,456
EUR
|
29,592,320
EUR
|
— | — |
| Accumulated other comprehensive income [abstract] | ||||||
| Revaluation surplus |
20,670,418
EUR
|
20,471,436
EUR
|
30,036,801
EUR
|
29,692,618
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
701,154,228
EUR
|
662,680,856
EUR
|
634,103,258
EUR
|
596,417,076
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
156,525,767
EUR
|
130,316,118
EUR
|
89,729,888
EUR
|
65,024,871
EUR
|
— | — |
| Current liabilities |
75,818,749
EUR
|
74,666,277
EUR
|
55,446,409
EUR
|
54,449,795
EUR
|
— | — |
| Assets less current liabilities [abstract] |