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Assets Held for Sale - Summary of Carrying Amounts of Derecognized Assets and Liabilities (Detail) - EUR (€) € in Thousands | Dec. 31, 2021 | Mar. 01, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
Disclosure of continuing involvement in derecognised financial assets [line items] |  |  |  |  |
Property, plant and equipment | € 83,054 |  | € 85,306 | € 102,523 |
Trade receivables | 41,259 |  | 33,934 |  |
Other receivable | 2,869 |  | 2,418 |  |
Cash and cash equivalents | 53,472 |  | 48,187 |  |
TOTAL ASSETS | 390,032 |  | 356,000 |  |
Share capital | (54,853) |  | (54,853) | (54,853) |
Reserves | (17,449) |  | (13,043) | (17,147) |
Retained Earnings | 10,033 |  | 6,448 | 31,126 |
Equity | (83,846) |  | (75,364) | € (104,818) | € (138,181)
Total liabilities | (306,186) |  | (280,636) |  |
Total equity and liabilities | € (390,032) |  | (356,000) |  |
Disposal Groups Classified As Held For Sale [Member] |  |  |  |  |
Disclosure of continuing involvement in derecognised financial assets [line items] |  |  |  |  |
Property, plant and equipment |  |  | 1,620 |  |
Intangible assets |  |  | 9 |  |
Trade receivables |  |  | 1,304 |  |
Employees' leaving entitlement |  |  | € (408) |  |
IMPE S.p.A. [member] |  |  |  |  |
Disclosure of continuing involvement in derecognised financial assets [line items] |  |  |  |  |
Property, plant and equipment |  | € 1,614 |  |  |
Inventories |  | 644 |  |  |
Other receivable |  | 26 |  |  |
Cash and cash equivalents |  | 1,313 |  |  |
TOTAL ASSETS |  | 3,597 |  |  |
Share capital |  | (1,000) |  |  |
Reserves |  | (2,272) |  |  |
Retained Earnings |  | 329 |  |  |
Profit (loss) as of February 28, 2021 |  | (233) |  |  |
Equity |  | (3,176) |  |  |
Employees' leaving entitlement |  | (410) |  |  |
Deferred income |  | (11) |  |  |
Total liabilities |  | (421) |  |  |
Total equity and liabilities |  | € (3,597) |  |  |

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