Trade and other receivables (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Trade and other receivables
VAT receivable	€ 1,121	€ 496	€ 317
Trade receivables	22,580	214	845
Other receivables	1,378	455	750
Interest receivable	2,081	556
VLAIO grant receivable	955	1,165	930
Total trade and other current receivables	28,115	2,886	2,842
Impairment loss recognised in profit or loss, trade receivables	100
Bad debt allowance	0	0
Trade receivables impaired	0	0
Government grant received from Flanders Innovation and Entrepreneurship Agency	2,289	€ 1,842	€ 422
Flanders Innovation and Entrepreneurship Agency
Trade and other receivables
Government grant received from Flanders Innovation and Entrepreneurship Agency	€ 0

The amount of current grant receivable.

No definition available.

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Data Type:	xbrli:monetaryItemType
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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.

+ References

No definition available.

+ Details

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- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
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-URIDate 2019-03-27

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The amount of current interest receivable. [Refer: Interest receivable]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current trade receivables. [Refer: Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current value added tax receivables. [Refer: Value added tax receivables]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The amount of impairment loss recognised in profit or loss for trade receivables. [Refer: Impairment loss recognised in profit or loss; Trade receivables]

+ References

+ Details

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- Definition

The amount of current other receivables. [Refer: Other receivables]

+ References

+ Details

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- Definition

The amount of income recognised in relation to government grants. [Refer: Government grants]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2019-01-01
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Balance Type:	credit
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- Definition

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

+ References

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

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