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Financial liabilities - Disclosure of Changes in Liabilities Arising from Financing Activities (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Interest paid | € (980) | € (6,978) | € (915)
Payment of lease liabilities | (1,080) | (794) | (1,093)
Cash flows from financing activities | (5,135) | 46,771 | (5,651)
Liabilities Related To Financing Activities |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 50,565 | 53,168 |
Principal received | 0 | 150 |
Decrease in loans and conditional advances | (3,075) | (2,971) |
Interest paid | (810) | (6,775) |
Interest paid (IFRS 16) | (170) | (203) |
Payment of lease liabilities | (1,080) | (793) |
Cash flows from financing activities | (5,136) | (10,592) |
Indexation effect on current lease commitment | 245 | 376 |
Impact of discounting and catch-up | (2,833) | (335) |
Accumulated fixed interest expense accrual | 1,808 | 2,550 |
Accumulated variable interest expense accrual | 6,254 | 5,396 |
Non-cash from financing activities | 5,474 | 7,988 |
Liabilities arising from financing activities at end of period | 50,902 | 50,565 | 53,168
Lease liabilities |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 5,081 | 5,530 |
Interest paid (IFRS 16) | (170) | (203) |
Payment of lease liabilities | (1,080) | (793) |
Early termination of lease contracts | 0 | 0 |
Cash flows from financing activities | (1,250) | (996) |
Indexation effect on current lease commitment | 245 | 376 |
Impact of discounting and catch-up | (16) | (31) |
Accumulated variable interest expense accrual | 169 | 201 |
Non-cash from financing activities | 398 | 547 |
Liabilities arising from financing activities at end of period | 4,230 | 5,081 | 5,530
Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 6,612 | 9,127 |
Principal received | 0 | 0 |
Accumulated fixed interest expense accrual | 97 | 131 |
Liabilities arising from financing activities at end of period | 4,089 | 6,612 | 9,127
Bpifrance advance | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 2,066 | 2,316 |
Decrease in loans and conditional advances | (500) | (300) |
Cash flows from financing activities | (500) | (300) |
Impact of discounting and catch-up | 12 | 16 |
Accumulated fixed interest expense accrual | 28 | 34 |
Non-cash from financing activities | 40 | 50 |
Liabilities arising from financing activities at end of period | 1,606 | 2,066 | 2,316
Interest-free Bpifrance loan | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period |  | 125 |
Decrease in loans and conditional advances |  | (125) |
Cash flows from financing activities |  | (125) |
Liabilities arising from financing activities at end of period |  |  | 125
Curadigm Bpifrance advance | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 397 | 317 |
Principal received | 0 | 150 |
Decrease in loans and conditional advances | (75) | (50) |
Cash flows from financing activities | (75) | 100 |
Impact of discounting and catch-up | 20 | (20) |
Non-cash from financing activities | 20 | (20) |
Liabilities arising from financing activities at end of period | 342 | 397 | 317
EIB fixed rate loan | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 36,409 | 35,754 |
Interest paid | (697) | (6,639) |
Cash flows from financing activities | (697) | (6,639) |
Impact of discounting and catch-up | (2,832) | (285) |
Accumulated fixed interest expense accrual | 1,670 | 2,385 |
Accumulated variable interest expense accrual | 6,085 | 5,195 |
Non-cash from financing activities | 4,923 | 7,295 |
Liabilities arising from financing activities at end of period | 40,635 | 36,409 | 35,754
HSBC “PGE” | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 3,155 | 4,409 |
Principal received | 0 | 0 |
Decrease in loans and conditional advances | (1,250) | (1,246) |
Interest paid | (48) | (41) |
Cash flows from financing activities | (1,298) | (1,287) |
Impact of discounting and catch-up | (13) | (9) |
Accumulated fixed interest expense accrual | 48 | 41 |
Non-cash from financing activities | 35 | 32 |
Liabilities arising from financing activities at end of period | 1,891 | 3,155 | 4,409
Bpifrance “PGE” | Long-term borrowings |  |  |
Disclosure Of Detailed Information About Financial Liabilities [Line Items] |  |  |
Liabilities arising from financing activities at beginning of period | 3,457 | 4,717 |
Principal received | 0 | 0 |
Decrease in loans and conditional advances | (1,250) | (1,250) |
Interest paid | (66) | (95) |
Cash flows from financing activities | (1,316) | (1,345) |
Impact of discounting and catch-up | (4) | (6) |
Accumulated fixed interest expense accrual | 62 | 90 |
Non-cash from financing activities | 58 | 84 |
Liabilities arising from financing activities at end of period | € 2,198 | € 3,457 | € 4,717

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