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Financial Instruments - Fair Values and Risk Management - Additional Information (Detail) - EUR (€) € in Thousands	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2015
Disclosure of detailed information about financial instruments [line items]
Unused credit lines	€ 24,251
Current and non-current receivables	1,780	€ 3,757
Cash and cash equivalents	€ 39,799	€ 62,131
Fixed rate borrowings [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings at fixed rate	49.90%	33.40%
Credit risk [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of insures the collections risk related to a significant portion of trade receivable	80.00%
Percentage of uncollected outstanding balances of trade receivable in case of insolvency	85.00%
Maximum amount of customer receivables to bank in exchange of short-term credit			€ 47,500
Percentage of insured receivables	15.00%
Current and non-current receivables	€ 12,242	€ 14,040

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

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- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The amount receivable by the entity that it does not separately disclose in the same statement or note.

+ References

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- Definition

Maximum contractual amount of accounts receivables to bank in exchange for short term credit.

+ References

No definition available.

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- Definition

Percentage of insured receivables.

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No definition available.

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X

- Definition

Percentage of trade account receivables insured.

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- Definition

Percentage of uncollected outstanding balances of trade receivables to refund.

+ References

No definition available.

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- Definition

Unused Line Of Credit.

+ References

No definition available.

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