Financial result (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial result
Interest expense	€ (1,458)	€ (1,143)	€ (190)
Interest expense on lease liability (2018: Finance lease obligations)	(190)	(69)	(45)
Long-term debt	(993)	(944)	(100)
Expense from revaluation of derivative financial instruments	(215)
Other	(60)	(130)	(45)
Interest income	144	1,952	365
Payout of bond funds	126	58	11
Income from revaluation of derivative financial instruments		1,877	352
Other	18	17	2
Financial result	€ (1,314)	€ 809	€ 175

The amount of income or cost associated with interest and other financing activities of the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The gains resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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- Definition

The amount of expense arising from interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

+ References

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- Definition

The amount of interest expense on other financial liabilities. [Refer: Interest expense; Other financial liabilities]

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- Definition

The amount of interest income on debt instruments held. [Refer: Interest income; Debt instruments held]

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The amount of interest income on other financial assets. [Refer: Interest income; Other financial assets]

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- Definition

The losses resulting from changes in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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- Definition

The amount of income arising from interest.

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n/a

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No definition available.

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