CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues
Total revenues	$ 22,275	$ 21,223
Cost of revenues
Total cost of revenues	17,277	14,790
Gross profit	4,998	6,433
Operating expenses
Compensation, taxes and benefits	4,524	3,634
General and administrative	3,281	2,940
Total operating expenses	7,805	6,574
Loss from operations	(2,807)	(141)
Other income (expense)
Other income	85	50
Loss on early termination of line of credit	0	(300)
Interest expense	(1,297)	(1,017)
Total other expense, net	(1,212)	(1,267)
Loss before income taxes	(4,019)	(1,408)
Income tax benefit	(200)	(74)
Net loss	(3,819)	(1,334)
Net loss attributable to noncontrolling interest	(3,044)	(1,120)
Net loss attributable to Direct Digital Holdings, Inc.	$ (775)	$ (214)
Net loss per common share:
Basic (in dollars per share)	$ (0.22)	$ (0.07)
Diluted (in dollars per share)	$ (0.22)	$ (0.07)
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	3,509,000	2,901,000
Diluted (in shares)	3,509,000	2,901,000
Sell-side advertising
Revenues
Total revenues	$ 16,500	$ 13,783
Cost of revenues
Total cost of revenues	14,807	11,841
Buy-side advertising
Revenues
Total revenues	5,775	7,440
Cost of revenues
Total cost of revenues	$ 2,470	$ 2,949