Organization and Description of Business (Details) - Direct Digital Holdings, LLC	1 Months Ended	3 Months Ended
Feb. 28, 2022	Mar. 31, 2025
Schedule of Organization and Description of Business [Line Items]
Percentage of voting interests	100.00%
Percentage of economic voting interests	19.70%	39.60%
Percentage of ownership interest		100.00%

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-3

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration