Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 87,329	$ 62,276	$ 46,896
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Foreign currency translation differences, net of taxes	(18,571)	(37,234)	(48,190)
Foreign currency translation differences	(18,571)	(37,234)	(48,190)
Income tax effect	0	0	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract]
Actuarial (losses) gains on employee benefits, net of taxes	(1,129)	105	435
Actuarial (losses) gains on employee benefits	(1,335)	127	512
Income tax effect	206	(22)	(77)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Financial instruments, net of taxes	0	0	0
Fair value change on financial instruments	0	0	0
Income tax effect	0	0	0
Comprehensive income (loss)	67,629	25,147	(859)
Attributable to shareholders of Criteo S.A.	62,820	22,418	(1,968)
Attributable to non-controlling interests	$ 4,809	$ 2,729	$ 1,109