CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 6,150	$ 12,537	$ 22,578	$ 33,938
Foreign currency translation differences, net of taxes	11,584	9,598	(4,348)	(894)
Actuarial (losses) gains on employee benefits, net of taxes	(1,357)	(585)	377	(1,638)
Other comprehensive income (loss)	10,227	9,013	(3,971)	(2,532)
Total comprehensive income (loss)	16,377	21,550	18,607	31,406
Attributable to shareholders of Criteo S.A.	15,702	19,069	16,983	26,842
Attributable to non-controlling interests	$ 675	$ 2,481	$ 1,624	$ 4,564