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Financial Instruments - Fair Values and Risk Management - Additional Information (Detail) |  |  | 1 Months Ended | 12 Months Ended
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Mar. 01, 2021 EUR (€) | Feb. 28, 2021 EUR (€) | Jan. 31, 2022 EUR (€) | Sep. 30, 2021 EUR (€) RealEstateProperty | May 31, 2021 EUR (€) RealEstateProperty | Mar. 31, 2021 EUR (€) RealEstateProperty | Jul. 31, 2020 EUR (€) | Jun. 30, 2020 EUR (€) | Dec. 31, 2021 EUR (€) Customer | Dec. 31, 2020 EUR (€) Customer | Dec. 31, 2019 EUR (€) Customer
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Transfers between Level 1 and Level 2, assets |  |  |  |  |  |  |  |  | € 0 | € 0 |
Transfers between Level 1 and Level 2, liabilities |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers between Level 2 and Level 1, assets |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers between Level 2 and Level 1, liabilities |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers into Level 3, assets |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers out of Level 3, assets |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers into Level 3, liabilities |  |  |  |  |  |  |  |  | 0 | 0 |
Transfers out of Level 3, liabilities |  |  |  |  |  |  |  |  | 0 | 0 |
Current and non-current receivables |  |  |  |  |  |  |  |  | 2,869,000 | 2,418,000 |
Cash and cash equivalents |  |  |  |  |  |  |  |  | 53,472,000 | 48,187,000 |
Cash consideration received for asset disposal |  |  |  |  |  |  |  |  | 4,511,000 | 2,888,000 | € 66,000
Long-term loan |  |  |  |  |  |  |  |  | 17,439,000 | 16,426,000 |
Unused credit lines |  |  |  |  |  |  |  |  | 14,947,000 |  |
Impairment loss on trade receivables |  |  |  |  |  |  |  |  | € 110,000 | € 1,802,000 | € 2,389,000
Fixed rate borrowings [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Borrowings interest rate |  |  |  |  |  |  |  |  | 46.40% | 57.90% |
Romanian Financial Institution |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Long-term loan |  |  |  |  |  | € 5,000,000 |  |  |  |  |
Long-term debt interest rate basis |  |  |  |  |  | six-month Euribor (360) |  |  |  |  |
Long-term debt interest rate spread |  |  |  |  |  | 2.75% |  |  |  |  |
Subsidiaries [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Accruals on trade receivables |  |  |  |  |  |  |  |  | € 728,000 |  |
Other Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Reversal of impairment loss on trade receivables |  |  |  |  |  |  |  |  | € 618,000 |  |
IMPE S.p.A. [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Current and non-current receivables | € 26,000 |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 1,313,000 |  |  |  |  |  |  |  |  |  |
Disposal of major subsidiary [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Purchase price adjustments on cash consideration | 2,100,000 |  |  |  |  |  |  |  |  |  |
Disposal of major subsidiary [member] | IMPE S.p.A. [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of interests in subsidiary | € 6,100,000 | € 8,202,000 |  |  |  |  |  |  |  |  |
Events After Reporting Period |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Long-term loan |  |  | € 4,000,000 |  |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  | six-month Euribor (360) |  |  |  |  |  |  |  |
Long-term debt interest rate spread |  |  | 2.20% |  |  |  |  |  |  |  |
Events After Reporting Period | Italian Financial Institution [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Long-term loan |  |  | € 4,000,000 |  |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  | six-month Euribor (360) |  |  |  |  |  |  |  |
Long-term debt interest rate spread |  |  | 2.20% |  |  |  |  |  |  |  |
Land [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Cash consideration received for asset disposal |  |  |  |  |  |  |  | € 2,800,000 |  |  |
Additional consideration receivable from asset sale |  |  |  |  |  |  |  | € 2,500,000 |  |  |
Industrial Real Estate Complex [member] | Non-current Assets Held For Sale [member] | Classification of Assets as Held For Sale [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Cash consideration on disposal of non-current assets held for sale |  |  |  | € 4,254,000 | € 4,254,000 | € 4,254,000 |  |  |  |  |
Description of non-current asset or disposal group held for sale which were sold or reclassified |  |  |  | Parent sold to third parties two idle industrial real estate complexes located in the city of Altamura (Bari), just a few miles away from its headquarters (see note 7) and a site located in High Point (North Caroline, USA), | Parent sold to third parties two idle industrial real estate complexes located in the city of Altamura (Bari), just a few miles away from its headquarters (see note 7) and a site located in High Point (North Caroline, USA), | Parent sold to third parties two idle industrial real estate complexes located in the city of Altamura (Bari), just a few miles away from its headquarters (see note 7) and a site located in High Point (North Caroline, USA), |  |  |  |  |
Number of real estate complexes sold | RealEstateProperty |  |  |  | 2 | 2 | 2 |  |  |  |  |
Trade receivables [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
No. of customers | Customer |  |  |  |  |  |  |  |  | 1 | 1 | 1
Revenue [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
No. of customers | Customer |  |  |  |  |  |  |  |  | 1 | 1 | 1
Credit risk [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of uncollected outstanding balances of trade receivable in case of customer insolvency |  |  |  |  |  |  |  |  | 85.00% |  |
Percentage of insured trade receivables |  |  |  |  |  |  |  |  | 15.00% |  |
Current and non-current receivables |  |  |  |  |  |  |  |  | € 15,872,000 | € 13,197,000 |
Liquidity risk [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Additional renewal term of factoring agreement |  |  |  |  |  |  | 5 years |  |  |  |
Bottom Of Range [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Maximum payment period for individual customers |  |  |  |  |  |  |  |  | 30 days |  |
Borrowings interest rate |  |  |  |  |  |  |  |  | 3.00% | 3.00% |
Bottom Of Range [Member] | Trade receivables [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of concentration risk |  |  |  |  |  |  |  |  | 5.00% | 5.00% | 5.00%
Bottom Of Range [Member] | Revenue [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of concentration risk |  |  |  |  |  |  |  |  | 5.00% | 5.00% | 5.00%
Bottom Of Range [Member] | Group's Distributors and Retailers [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Percentage of concentration risk |  |  |  |  |  |  |  |  | 80.00% |  |
Customer concentration transacting period |  |  |  |  |  |  |  |  | 5 years |  |
Top of range [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Maximum payment period for individual customers |  |  |  |  |  |  |  |  | 90 days |  |
Temporarily extended payment period for certain customers |  |  |  |  |  |  |  |  | 120 days | 120 days |
Borrowings interest rate |  |  |  |  |  |  |  |  | 12.00% | 12.00% |
Top of range [member] | Liquidity risk [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |  |  |  |
Short-term borrowings |  |  |  |  |  |  | € 40,000,000 |  |  |  |

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- Definition Accruals on trade receivables. + References No definition available. + Details
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- Definition Additional renewal period of agreement. + References No definition available. + Details
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- Definition Cash consideration from disposal of non current assets classified as held for sale and discontinued operations. + References No definition available. + Details
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- Definition Concentration risk number of major customers. + References No definition available. + Details
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- Definition Concentration risks percentage. + References No definition available. + Details
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- Definition Contingent consideration on asset disposal. + References No definition available. + Details
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- Definition Customer concentration transacting period. + References No definition available. + Details
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- Definition Maximum payment period of exposure to credit risk from trade receivables. + References No definition available. + Details
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- Definition Number of real estate complexes sold. + References No definition available. + Details
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- Definition Percentage of insured trade receivables. + References No definition available. + Details
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- Definition Percentage of uncollected outstanding balances of trade receivables refunds. + References No definition available. + Details
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- Definition Purchase price adjustments on cash consideration. + References No definition available. + Details
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- Definition Temporarily extended maximum payment period of exposure to credit risk from trade receivables. + References No definition available. + Details
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- Definition Unused Line Of Credit. + References No definition available. + Details
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