CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue	$ 170,809	$ 166,082
Operating expenses:
Platform operations	89,145	83,444
Sales and marketing	45,769	44,018
Technology and development	20,824	16,644
General and administrative	17,821	20,697
Total operating expenses	173,559	164,803
(Loss) income from operations	(2,750)	1,279
Interest income, net	2,465	263
Gain on change in fair value of Seller's Earn-Out	763	17,308
Gain on change in fair value of warrants	1,331	9,868
Gain on deconsolidation of SymetryML	0	1,939
Loss on change in fair value of SAFE notes	0	(788)
Loss on fair value of investment in SymetryML Holdings	(161)	(72)
Other expense, net	(49)	(21)
Total other income, net	4,349	28,497
Net income before provision for income taxes	1,599	29,776
Provision for income taxes	(1,592)	(988)
Net income	7	28,788
Less: Net loss attributable to noncontrolling interest	0	550
Net income attributable to AdTheorent Holding Company, Inc.	$ 7	$ 29,338
Earnings per share:
Basic	$ 0	$ 0.34
Diluted	$ 0	$ 0.32
Weighted-average common shares outstanding:
Basic	87,984,917	86,222,972
Diluted	92,465,503	92,621,822