CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues
Total revenues	$ 9,075	$ 59,472	$ 53,205	$ 116,099
Cost of revenues
Total cost of revenues	5,561	47,719	38,761	87,840
Gross profit	3,514	11,753	14,444	28,259
Operating expenses
Compensation, taxes and benefits	3,526	4,747	12,216	12,934
General and administrative	3,646	2,512	10,757	8,718
Total operating expenses	7,172	7,259	22,973	21,652
(Loss) income from operations	(3,658)	4,494	(8,529)	6,607
Other income (expense)
Other income	99	83	190	175
Loss on early termination of line of credit	0	0	0	(300)
Derecognition of tax receivable agreement liability	5,201	0	5,201	0
Interest expense	(1,413)	(1,060)	(4,068)	(3,104)
Total other income (expense), net	3,887	(977)	1,323	(3,229)
Income (loss) before income taxes	229	3,517	(7,206)	3,378
Income tax expense	6,606	166	6,132	166
Net (loss) income	(6,377)	3,351	(13,338)	3,212
Net (loss) income attributable to noncontrolling interest	(3,687)	2,780	(9,283)	2,663
Net (loss) income attributable to Direct Digital Holdings, Inc.	$ (2,690)	$ 571	$ (4,055)	$ 549
Net (loss) income per common share:
Basic (in dollars per share)	$ (0.71)	$ 0.09	$ (1.11)	$ 0.09
Diluted (in dollars per share)	$ (0.71)	$ 0.09	$ (1.11)	$ 0.09
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	3,793,000	2,990,000	3,667,000	2,938,000
Diluted (in shares)	3,793,000	3,044,000	3,667,000	3,080,000
Sell-side advertising
Revenues
Total revenues	$ 2,202	$ 51,622	$ 33,001	$ 89,006
Cost of revenues
Total cost of revenues	2,654	44,606	30,670	77,190
Buy-side advertising
Revenues
Total revenues	6,873	7,850	20,204	27,093
Cost of revenues
Total cost of revenues	$ 2,907	$ 3,113	$ 8,091	$ 10,650