CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 16,428	$ 21,401
Foreign currency translation differences, net of taxes	(15,932)	(10,492)
Actuarial (losses) gains on employee benefits, net of taxes	1,734	(1,053)
Other comprehensive income (loss)	(14,198)	(11,545)
Total comprehensive income (loss)	2,230	9,856
Attributable to shareholders of Criteo S.A.	1,281	7,773
Attributable to non-controlling interests	$ 949	$ 2,083