Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
465,724,409
EUR
|
452,753,184
EUR
|
457,645,315
EUR
|
446,106,451
EUR
|
— | — |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
841,090
EUR
|
759,814
EUR
|
942,603
EUR
|
870,086
EUR
|
— | — |
| Investment property [abstract] | ||||||
| Investment property |
15,088,082
EUR
|
15,386,143
EUR
|
15,324,069
EUR
|
23,467,367
EUR
|
— | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries reported in separate financial statements |
0
EUR
|
13,786,988
EUR
|
0
EUR
|
4,048,063
EUR
|
— | — |
| Investments in associates reported in separate financial statements |
16,898,490
EUR
|
6,737,709
EUR
|
16,361,004
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 |
59,949,023
EUR
|
57,463,248
EUR
|
48,989,127
EUR
|
45,758,319
EUR
|
— | — |
| Trade and other current receivables [abstract] | ||||||
| Trade and other current receivables |
60,363,391
EUR
|
59,393,154
EUR
|
60,178,626
EUR
|
59,622,532
EUR
|
— | — |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||||
| Current accrued income including current contract assets [abstract] | ||||||
| Current contract assets |
253,653
EUR
|
253,653
EUR
|
0
EUR
|
0
EUR
|
— | — |
| Categories of current financial assets [abstract] | ||||||
| Current financial assets |
69,474,594
EUR
|
69,474,594
EUR
|
1,717
EUR
|
1,717
EUR
|
— | — |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
2,091,082
EUR
|
2,091,082
EUR
|
1,596,208
EUR
|
1,596,208
EUR
|
— | — |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
81,628,977
EUR
|
53,282,798
EUR
|
94,749,216
EUR
|
69,095,661
EUR
|
40,638,685
EUR
|
16,342,426
EUR
|
| Miscellaneous assets [abstract] | ||||||
| Other assets |
535,707
EUR
|
535,707
EUR
|
216,640
EUR
|
216,640
EUR
|
— | — |
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
93,979,370
EUR
|
93,979,370
EUR
|
54,315,463
EUR
|
54,315,463
EUR
|
— | — |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings |
15,193,235
EUR
|
15,193,235
EUR
|
8,336,093
EUR
|
8,336,093
EUR
|
— | — |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Trade and other non-current payables [abstract] | ||||||
| Non-current accruals and non-current deferred income including non-current contract liabilities [abstract] | ||||||
| Non-current deferred income including non-current contract liabilities [abstract] | ||||||
| Non-current deferred income including non-current contract liabilities |
34,959,122
EUR
|
33,958,480
EUR
|
32,406,391
EUR
|
31,277,675
EUR
|
— | — |
| Trade and other non-current payables |
82,544
EUR
|
98,146
EUR
|
1,145,239
EUR
|
1,105,802
EUR
|
— | — |
| Trade and other current payables [abstract] | ||||||
| Trade and other current payables |
59,940,294
EUR
|
58,454,240
EUR
|
57,286,363
EUR
|
56,078,955
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 |
81,464,730
EUR
|
43,878,553
EUR
|
85,232,746
EUR
|
50,229,864
EUR
|
— | — |
| Accumulated other comprehensive income [abstract] | ||||||
| Revaluation surplus |
24,501,725
EUR
|
24,719,356
EUR
|
20,670,418
EUR
|
20,471,436
EUR
|
— | — |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
774,226,552
EUR
|
733,439,080
EUR
|
701,154,228
EUR
|
662,680,856
EUR
|
— | — |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
215,149,760
EUR
|
185,976,296
EUR
|
156,525,767
EUR
|
130,316,118
EUR
|
— | — |
| Current liabilities |
75,506,443
EUR
|
74,079,436
EUR
|
75,818,749
EUR
|
74,666,277
EUR
|
— | — |
| Assets less current liabilities [abstract] |