Basis of Presentation and Consolidation and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands					3 Months Ended		12 Months Ended	15 Months Ended
	Apr. 24, 2026	Jan. 08, 2026	Oct. 14, 2025 USD ($)	Aug. 08, 2025 USD ($)	Mar. 31, 2026 USD ($) shares	Mar. 31, 2025 USD ($) shares	Dec. 31, 2025 USD ($)	Mar. 31, 2026 USD ($)
Concentrations of credit risk
Reverse stock split		0.018
Contract liabilities					$ 776		$ 513	$ 776
Contract with customer, liability, revenue recognized					300	$ 200
Contract assets in prepaid expenses and other current assets					300			300
Contract assets in prepaid expenses and other long-term assets					100			100
Amortized contract costs					100	0
Goodwill					6,520		6,520	6,520
Goodwill, impairment loss					0	0
Impairment, long-lived asset, held-for-use					$ 0	0
Guaranteed recovery from insurance (as a percent)					90.00%
Remittance, if full amount collected (as a percent)					10.00%
Provision for bad debts (as a percent)					10.00%
Issuance pursuant to the Equity Reserve Facility					$ 1,119			11,600
Net loss					5,571	$ 5,940
Accumulated deficit					32,970		27,720	32,970
Cash and cash equivalents					796		$ 728	796
Working capital					$ (23,900)			$ (23,900)
Other Intangible Assets
Concentrations of credit risk
Customer remaining life (in years)					10 years			10 years
Subsequent Event
Concentrations of credit risk
Reverse stock split	0.25
2021 Credit Facility | Lafayette Square
Concentrations of credit risk
Conversion of debt			$ 10,000	$ 25,000	$ 35,000
Debt and accrued liabilities owed to lender					$ 17,400			$ 17,400
Accounts Payable | Supplier Concentration Risk | One Supplier
Concentrations of credit risk
Concentration risk (as a percent)					16.00%		21.00%
Three Customers | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Concentrations of credit risk
Concentration risk (as a percent)					44.00%	39.00%
Three Customers | Accounts Receivable | Credit Concentration Risk
Concentrations of credit risk
Concentration risk (as a percent)					45.00%		43.00%
Class A Common Stock | Direct Digital Management LLC
Concentrations of credit risk
Conversion of Class B to Class A Common Stock (in shares) | shares					0	318