| Assets | 30.6.2024 | % | 31.12.2023 | % | 
| Cash and cash equivalents | 372,359 | 
 | 349,115 | 
 | 
| Securities | 7,640 | 
 | 22,210 | 
 | 
| Trade receivables | 442,914 | 
 | 473,665 | 
 | 
| Other receivables | 74,984 | 
 | 60,869 | 
 | 
| Inventories | 558,185 | 
 | 481,311 | 
 | 
| Prepayments and accrued income | 68,565 | 
 | 63,220 | 
 | 
| Current assets | 1,524,647 | 54.0 | 1,450,390 | 53.4 | 
| 
 | 
 | 
 | 
 | 
 | 
| Investments in associates and joint ventures | 11,253 | 
 | 12,012 | 
 | 
| Loans and other receivables | 18,049 | 
 | 12,715 | 
 | 
| Securities | 10,430 | 
 | 9,907 | 
 | 
| Employer contribution reserves | 1,580 | 
 | 1,610 | 
 | 
| Deferred tax assets | 10,003 | 
 | 11,954 | 
 | 
| Total financial assets | 51,315 | 
 | 48,198 | 
 | 
| Prepayments and accrued income | 6,180 | 
 | 4,864 | 
 | 
| Property, plant and equipment | 1,127,363 | 
 | 1,105,405 | 
 | 
| Intangible assets | 112,106 | 
 | 105,650 | 
 | 
| Non-current assets | 1,296,964 | 46.0 | 1,264,117 | 46.6 | 
| Total assets | 2,821,611 | 100.0 | 2,714,507 | 100.0 | 
| 
 | 
 | 
 | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
 | 
| Liabilities and shareholders' equity | 
 | 
 | 
 | 
 | 
| Bank overdrafts | 75,642 | 
 | 68,475 | 
 | 
| Finance lease liabilities | 359 | 
 | 430 | 
 | 
| Loans | 500 | 
 | 500 | 
 | 
| Trade payables | 319,832 | 
 | 301,841 | 
 | 
| Other payables | 52,471 | 
 | 43,957 | 
 | 
| Accrued liabilities and deferred income | 227,455 | 
 | 193,200 | 
 | 
| Provisions | 9,233 | 
 | 8,221 | 
 | 
| Current liabilities | 685,492 | 24.3 | 616,624 | 22.7 | 
| 
 | 
 | 
 | 
 | 
 | 
| Bank overdrafts | 103,294 | 
 | 112,610 | 
 | 
| Finance lease liabilities | 201 | 
 | 305 | 
 | 
| Loans | 345 | 
 | 457 | 
 | 
| Bonds | 499,520 | 
 | 499,520 | 
 | 
| Accrued liabilities and deferred income | 3,812 | 
 | 4,198 | 
 | 
| Provisions | 68,355 | 
 | 65,909 | 
 | 
| Non-current liabilities | 675,527 | 23.9 | 682,999 | 25.2 | 
| 
 | 
 | 
 | 
 | 
 | 
| Liabilities | 1,361,019 | 48.2 | 1,299,623 | 47.9 | 
| 
 | 
 | 
 | 
 | 
 | 
| Share capital | 53,498 | 
 | 53,498 | 
 | 
| Capital reserves | 2,088 | 
 | 2,088 | 
 | 
| Retained earnings | 1,269,109 | 
 | 1,237,377 | 
 | 
| Shareholders’ equity excl. minority interests | 1,324,695 | 47.0 | 1,292,963 | 47.6 | 
| 
 | 
 | 
 | 
 | 
 | 
| Minority interests | 135,897 | 4.8 | 121,921 | 4.5 | 
| Shareholders’ equity incl. minority interests | 1,460,592 | 51.8 | 1,414,884 | 52.1 | 
| Total liabilities and shareholders' equity | 2,821,611 | 100.0 | 2,714,507 | 100.0 |