XML 92 R55.htm IDEA: XBRL DOCUMENT v3.21.1

Summary of Significant Accounting Policies - Segment (Details)	12 Months Ended
	Dec. 31, 2020 segment
Summary of Significant Accounting Policies
Number of segments	1

X

- Definition

Number of segments reported by the entity.

+ References

No definition available.

+ Details

Name:	evax_NumberOfReportableSegments1
Namespace Prefix:	evax_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	evax_SummaryOfSignificantAccountingPoliciesAbstract
Namespace Prefix:	evax_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration