CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Total revenues	$ 21,855	$ 35,404	$ 44,130	$ 56,627
Cost of revenues
Total cost of revenues	15,924	25,331	33,201	40,121
Gross profit	5,931	10,073	10,929	16,506
Operating expenses
Compensation, taxes and benefits	4,166	4,553	8,690	8,187
General and administrative	3,830	3,265	7,112	6,205
Total operating expenses	7,996	7,818	15,802	14,392
(Loss) income from operations	(2,065)	2,255	(4,873)	2,114
Other income (expense)
Other income	8	42	92	92
Loss on early termination of line of credit	0	0	0	(300)
Interest expense	(1,358)	(1,028)	(2,655)	(2,045)
Total other expense, net	(1,350)	(986)	(2,563)	(2,253)
(Loss) income before income taxes	(3,415)	1,269	(7,436)	(139)
Income tax (benefit) expense	(274)	74	(475)	0
Net (loss) income	(3,141)	1,195	(6,961)	(139)
Net (loss) income attributable to noncontrolling interest	(2,551)	1,003	(5,596)	(117)
Net (loss) income attributable to Direct Digital Holdings, Inc.	$ (590)	$ 192	$ (1,365)	$ (22)
Net (loss) income per common share:
Basic (in dollars per share)	$ (0.16)	$ 0.03	$ (0.38)	$ (0.01)
Diluted (in dollars per share)	$ (0.16)	$ 0.03	$ (0.38)	$ (0.01)
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	3,700,615	2,921,258	3,604,220	2,911,801
Diluted (in shares)	3,700,615	3,113,189	3,604,220	2,911,801
Sell-side advertising
Revenues
Total revenues	$ 14,298	$ 23,601	$ 30,799	$ 37,384
Cost of revenues
Total cost of revenues	13,209	20,743	28,016	32,584
Buy-side advertising
Revenues
Total revenues	7,557	11,803	13,331	19,243
Cost of revenues
Total cost of revenues	$ 2,715	$ 4,588	$ 5,185	$ 7,537