CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Share capital	Treasury Stock	Additional paid-in capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Equity - attributable to shareholders of Criteo S.A.	Non controlling interest
Beginning balance (in shares) at Dec. 31, 2018			67,708,203	(3,459,119)
Beginning balance at Dec. 31, 2018		$ 967,891	$ 2,201	$ (79,159)	$ 663,281	$ (30,522)	$ 387,869	$ 943,670	$ 24,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		21,401					19,120	19,120	2,281
Other comprehensive income (loss)		(11,545)				(11,347)		(11,347)	(198)
Issuance of ordinary shares (in shares)			28,596
Stock Issued During Period, Value, New Issues		373	$ 1		372			373
Change in treasury stocks (in shares)			(1,594,288)	1,786,715
Change in treasury stocks			$ (45)	$ 40,080	(36,091)		(3,944)
Share-Based Compensation		13,522			13,533			13,533	(11)
Other changes in equity		154			(1)		155	154
Ending Balance (in shares) at Mar. 31, 2019			66,142,511	(1,672,404)
Ending Balance at Mar. 31, 2019		$ 991,796	$ 2,157	$ (39,079)	641,094	(41,869)	403,200	965,503	26,293
Beginning balance (in shares) at Dec. 31, 2019		66,197,181	66,197,181	(3,903,673)
Beginning balance at Dec. 31, 2019		$ 1,037,988	$ 2,158	$ (74,900)	668,389	(40,105)	451,725	1,007,267	30,721
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		16,428					15,459	15,459	969
Other comprehensive income (loss)		(14,198)				(14,178)		(14,178)	(20)
Issuance of ordinary shares (in shares)			5,700
Stock Issued During Period, Value, New Issues		39			39			39
Change in treasury stocks (in shares)				(629,977)
Change in treasury stocks		(18,239)		$ (4,934)			(13,305)	(18,239)
Share-Based Compensation		8,131			8,082			8,082	49
Other changes in equity	[1]	$ (3,541)					(3,399)	(3,399)	(142)
Ending Balance (in shares) at Mar. 31, 2020		66,202,881	66,202,881	(4,533,650)
Ending Balance at Mar. 31, 2020		$ 1,026,608	$ 2,158	$ (79,834)	$ 676,510	$ (54,283)	$ 450,480	$ 995,031	$ 31,577

[1] From January 1, 2020, we adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost issued by the Financial Accounting Standards Board (FASB).