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Property, plant & equipment (Tables) | 12 Months Ended
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Dec. 31, 2025
Property, plant & equipment |
Schedule of changes in the carrying value of property, plant and equipment including right of use assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | Land and | ​ ​ ​ | Plant and | ​ ​ ​ | Right-of-use | ​ ​ ​ | Construction | ​ ​ ​ | ​
in 000€ | ​ | buildings | ​ | equipment | ​ | assets | ​ | in progress | ​ | Total
Acquisition value | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At January 1, 2023 |  | 47,959 |  | 105,877 |  | 21,619 |  | 15,955 |  | 191,410
Additions |  | 142 |  | 3,850 |  | 3,965 |  | 8,325 |  | 16,282
Disposals |  | — |  | (4,299) |  | (3,313) |  | — |  | (7,612)
Transfers |  | 40 |  | 15,031 |  | (4,433) |  | (11,585) |  | (947)
Currency Translation |  | 458 |  | 586 |  | (74) |  | (153) |  | 817
At December 31, 2023 |  | 48,599 | ​ | 121,045 | ​ | 17,764 | ​ | 12,543 | ​ | 199,951
Additions |  | 107 | ​ | 4,189 | ​ | 3,149 | ​ | 23,466 | ​ | 30,911
Acquired from business combinations |  | — | ​ | 38 | ​ | 36 | ​ | — | ​ | 74
Disposals |  | (166) | ​ | (4,312) | ​ | (1,777) | ​ | (133) | ​ | (6,388)
Transfers |  | (50) | ​ | 10,885 | ​ | (1,819) | ​ | (9,349) | ​ | (333)
Currency Translation |  | 175 | ​ | 561 | ​ | 71 | ​ | 1 | ​ | 808
At December 31, 2024 |  | 48,666 | ​ | 132,406 | ​ | 17,424 | ​ | 26,528 | ​ | 225,024
Additions |  | 646 | ​ | 3,852 | ​ | 1,925 | ​ | 10,895 | ​ | 17,318
Assets held for sale | ​ | — | ​ | (1,074) | ​ | (169) | ​ | — | ​ | (1,243)
Disposals |  | (2) | ​ | (5,228) | ​ | (3,282) | ​ | (123) | ​ | (8,635)
Transfers |  | 18,342 | ​ | 15,161 | ​ | (202) | ​ | (33,334) | ​ | (33)
Currency Translation |  | (37) | ​ | (2,047) | ​ | (303) | ​ | (16) | ​ | (2,403)
At December 31, 2025 |  | 67,615 | ​ | 143,070 | ​ | 15,393 | ​ | 3,950 | ​ | 230,027
Depreciation |  | ​ |  | ​ |  | ​ |  | ​ |  | ​
At January 1, 2023 |  | (11,045) |  | (64,470) |  | (13,199) |  | — |  | (88,714)
Depreciation charge for the year |  | (1,352) |  | (10,433) |  | (3,296) |  | — |  | (15,081)
Impairment | ​ | — |  | (160) |  | — |  | — |  | (160)
Disposals |  | — | ​ | 3,996 | ​ | 3,024 | ​ | — | ​ | 7,020
Transfers | ​ | — |  | (2,935) |  | 3,802 |  | — |  | 867
Currency Translation |  | (33) |  | (356) |  | 8 |  | — |  | (381)
At December 31, 2023 |  | (12,430) | ​ | (74,358) | ​ | (9,661) | ​ | — | ​ | (96,449)
Depreciation charge for the year |  | (1,358) | ​ | (10,824) | ​ | (3,191) | ​ | — | ​ | (15,373)
Disposals | ​ | 139 | ​ | 3,976 | ​ | 1,627 | ​ | — | ​ | 5,742
Transfers |  | — | ​ | (1,232) | ​ | 1,565 | ​ | — | ​ | 333
Currency Translation |  | (32) | ​ | (150) | ​ | (45) | ​ | — | ​ | (227)
At December 31, 2024 |  | (13,681) | ​ | (82,588) | ​ | (9,705) | ​ | — | ​ | (105,974)
Depreciation charge for the year |  | (1,669) | ​ | (10,521) | ​ | (3,087) | ​ | — | ​ | (15,277)
Assets held for sale | ​ | — | ​ | 835 | ​ | 140 | ​ | — | ​ | 975
Disposals | ​ | 2 | ​ | 5,089 | ​ | 2,505 | ​ | — | ​ | 7,596
Transfers |  | — | ​ | — | ​ | — | ​ | — | ​ | —
Currency Translation |  | 6 | ​ | 746 | ​ | 184 | ​ | — | ​ | 936
At December 31, 2025 |  | (15,341) | ​ | (86,440) | ​ | (9,963) | ​ | — | ​ | (111,744)
Net book value |  | ​ |  | ​ |  | ​ |  | ​ |  | ​
At December 31, 2025 | ​ | 52,274 | ​ | 56,630 | ​ | 5,429 | ​ | 3,950 | ​ | 118,283
At December 31, 2024 | ​ | 34,986 | ​ | 49,818 | ​ | 7,719 | ​ | 26,528 | ​ | 119,050
At December 31, 2023 | ​ | 36,169 | ​ | 46,688 | ​ | 8,102 | ​ | 12,544 | ​ | 103,503
At January 1, 2023 | ​ | 36,914 | ​ | 41,407 | ​ | 8,420 | ​ | 15,955 | ​ | 102,696
Schedule of carrying value of right-of-use assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
in 000€ | ​ ​ ​ | Buildings | ​ ​ ​ | Vehicles | ​ ​ ​ | Equipment | ​ ​ ​ | Total
Acquisition value | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At January 1, 2023 | ​ | 9,391 | ​ | 4,680 | ​ | 6,405 | ​ | 20,476
Additions | ​ | 1,739 | ​ | 1,980 | ​ | 246 | ​ | 3,965
Disposals | ​ | (2,607) | ​ | (676) | ​ | (30) | ​ | (3,313)
Currency Translation | ​ | (112) | ​ | 2 | ​ | 36 | ​ | (74)
Transfers | ​ | (236) | ​ | (909) | ​ | (2,145) | ​ | (3,290)
At December 31, 2023 |  | 8,175 | ​ | 5,077 | ​ | 4,512 | ​ | 17,764
Additions |  | 1,822 | ​ | 739 | ​ | 589 | ​ | 3,150
Acquired from business combinations |  | 36 | ​ | — | ​ | — | ​ | 36
Disposals |  | (1,123) | ​ | (430) | ​ | (224) | ​ | (1,777)
Currency Translation |  | 48 | ​ | 7 | ​ | 16 | ​ | 71
Transfers |  | (345) | ​ | (1,384) | ​ | (89) | ​ | (1,818)
At December 31, 2024 |  | 8,613 | ​ | 4,010 | ​ | 4,803 | ​ | 17,426
Additions |  | 1,026 | ​ | 488 | ​ | 411 | ​ | 1,925
Assets held for sale | ​ | (133) | ​ | (36) | ​ | — | ​ | (169)
Disposals |  | (2,477) | ​ | (770) | ​ | (36) | ​ | (3,283)
Currency Translation |  | (282) | ​ | (11) | ​ | (11) | ​ | (304)
Transfers |  | — | ​ | — | ​ | (202) | ​ | (202)
At December 31, 2025 |  | 6,748 | ​ | 3,681 | ​ | 4,964 | ​ | 15,393
Depreciation |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
At January 1, 2023 | ​ | (4,569) | ​ | (2,909) | ​ | (4,578) | ​ | (12,055)
Depreciation charge for the year | ​ | (1,735) | ​ | (1,185) | ​ | (376) | ​ | (3,296)
Disposals | ​ | 2,360 | ​ | 627 | ​ | 36 | ​ | 3,023
Currency Translation | ​ | 45 | ​ | (3) | ​ | (34) | ​ | 8
Transfers | ​ | 235 | ​ | 909 | ​ | 1,515 | ​ | 2,659
At December 31, 2023 |  | (3,664) | ​ | (2,561) | ​ | (3,437) | ​ | (9,662)
Depreciation charge for the year |  | (1,851) | ​ | (1,073) | ​ | (266) | ​ | (3,191)
Disposals |  | 953 | ​ | 454 | ​ | 220 | ​ | 1,627
Currency Translation |  | (29) | ​ | (3) | ​ | (14) | ​ | (46)
Transfers |  | 345 | ​ | 1,334 | ​ | (114) | ​ | 1,565
At December 31, 2024 |  | (4,246) | ​ | (1,849) | ​ | (3,611) | ​ | (9,707)
Depreciation charge for the year |  | (1,881) | ​ | (902) | ​ | (304) | ​ | (3,087)
Assets held for sale | ​ | 133 | ​ | 8 | ​ | — | ​ | 141
Disposals |  | 1,752 | ​ | 717 | ​ | 36 | ​ | 2,505
Currency Translation |  | 185 | ​ | 5 | ​ | (6) | ​ | 184
Transfers |  | — | ​ | — | ​ | — | ​ | —
At December 31, 2025 |  | (4,057) | ​ | (2,021) | ​ | (3,885) | ​ | (9,963)
Net book value |  | ​ | ​ | ​ | ​ | ​ | ​ | ​
At December 31, 2025 | ​ | 2,691 | ​ | 1,660 | ​ | 1,079 | ​ | 5,429
At January 1, 2025 | ​ | 4,368 | ​ | 2,160 | ​ | 1,191 | ​ | 7,719
Schedule of amounts related to leases recognized in profit & loss | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
(in 000€) | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ ​ ​ | 2023
Depreciation expense |  | (3,087) | ​ | (3,191) | ​ | (3,296)
Interest expense on lease liabilities |  | (363) | ​ | (365) | ​ | (325)
Expenses related to short-term leases/ low-value assets/ variable lease payments |  | (981) | ​ | (901) | ​ | (689)
Schedule of potential future cash flows beyond the period | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
(in 000€) | ​ ​ ​ | 2025 | ​ ​ ​ | 2024 | ​ ​ ​ | 2023
Potential (non-discounted) cash flows for terminations options that are not reasonably certain to be exercised: |  | 612 | ​ | 817 | ​ | 1,089
Potential (non-discounted) cash flows for extensions options that are reasonably certain to be exercised |  | 1,270 | ​ | 1,259 | ​ | 1,838

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