XML 54 R44.htm IDEA: XBRL DOCUMENT
v3.21.2

Operating Income - Summary of Operating Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Other Income and Expenses [Abstract] |  |  |  |
Research Tax Credit | $ 1,647 | $ 1,815 | $ 5,324 | $ 7,615
Other Operating (loss) income | (324) | 2,344 | (2,549) | 4,873
Total | $ 1,323 | $ 4,158 | $ 2,776 | $ 12,488

X
- Definition Other Operating Income1. + References No definition available. + Details
Name: | dbvt_OtherperatingIncome1
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition ResearchTaxCredit. + References No definition available. + Details
Name: | dbvt_Researchtaxcredit
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total Revenues + References No definition available. + Details
Name: | dbvt_TotalRevenues
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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