XML 90 R53.htm IDEA: XBRL DOCUMENT
v3.21.1

Summary of Significant Accounting Policies - Convertible debt instruments (Details) | 12 Months Ended
--- | ---
Dec. 31, 2018 instrument
Summary of Significant Accounting Policies |
Number of convertible debt instruments issued | 2

X
- References No definition available. + Details
Name: | evax_SummaryOfSignificantAccountingPoliciesAbstract
Namespace Prefix: | evax_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents types of convertible debt instruments issued during period. + References No definition available. + Details
Name: | evax_TypesOfConvertibleDebtInstrumentsIssued
Namespace Prefix: | evax_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration