Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenue	$ 1,799,146	$ 1,323,169	$ 988,249
Cost of revenue
Traffic acquisition costs	(1,068,911)	(789,152)	(585,492)
Other cost of revenue	(85,260)	(62,201)	(47,948)
Gross profit	644,975	471,816	354,809
Operating expenses:
Research and development expenses	(123,649)	(86,807)	(60,075)
Sales and operations expenses	(282,853)	(229,530)	(176,927)
General and administrative expenses	(117,469)	(79,145)	(64,723)
Total operating expenses	(523,971)	(395,482)	(301,725)
Income from operations	121,004	76,334	53,084
Financial income (expense)	(546)	(4,541)	11,390
Income before taxes	120,458	71,793	64,474
Provision for income taxes	(33,129)	(9,517)	(17,578)
Net income	87,329	62,276	46,896
Net income available to shareholders of Criteo S.A.	82,272	59,553	45,556
Net income available to non-controlling interests	$ 5,057	$ 2,723	$ 1,340
Net income allocated to shareholders per share:
Net income allocated to shareholders per share, Basic (in dollars per share)	$ 1.30	$ 0.96	$ 0.77
Net income allocated to shareholders per share, Diluted (in dollars per share)	$ 1.25	$ 0.91	$ 0.72
Weighted average shares outstanding, basic (in shares)	63,337,792	61,835,499	58,928,563
Weighted average shares outstanding used in computing per share amounts, Diluted (in shares)	65,633,470	65,096,486	63,493,260