Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016		Sep. 30, 2017	Sep. 30, 2016
Revenue:
Third party and other		$ 302,458	$ 283,809		$ 919,884	$ 888,014
Direct		332,008	402,746		1,050,827	1,220,736
Total revenue		634,466	686,555		1,970,711	2,108,750
Cost of revenue:
Third party and other		41,858	34,837		123,209	114,006
Direct		283,183	358,450		900,559	1,065,997
Total cost of revenue		325,041	393,287		1,023,768	1,180,003
Gross profit		309,425	293,268		946,943	928,747
Operating expenses:
Marketing		101,456	84,748		288,456	261,223
Selling, general and administrative		214,828	234,266		677,061	755,981
Restructuring Charges		11,503	1,163		18,818	28,378
Gain (Loss) on Disposition of Intangible Assets		(17,149)	0		(17,149)	0
Gain (Loss) on Disposition of Business		0	(2,060)		0	(11,399)
Acquisition-related (benefit) expense, net		0	(9)		48	4,305
Total operating expenses		310,638	318,108		967,234	1,038,488
Income (loss) from operations		(1,213)	(24,840)		(20,291)	(109,741)
Other expense, net		7,546	(7,917)		8,822	(16,552)
Loss from continuing operations before provision for income taxes		6,333	(32,757)		(11,469)	(126,293)
Provision for income taxes		2,531	1,690		11,001	461
Loss from continuing operations		3,802	(34,447)		(22,470)	(126,754)
Income (loss) from discontinued operations, net of tax		(862)	(1,345)		(1,751)	(6,365)
Net loss		2,940	(35,792)		(24,221)	(133,119)
Net income attributable to noncontrolling interests		(2,881)	(2,184)		(9,460)	(8,880)
Net loss attributable to Groupon, Inc.		$ 59	$ (37,976)		$ (33,681)	$ (141,999)
Weighted average number of shares outstanding
Basic, weighted average number of shares outstanding	[1]	557,221,040	575,216,191		559,726,154	578,290,291
Diluted, weighted average number of shares outstanding	[1]	566,669,049	575,216,191		559,726,154	578,290,291
Common Class A [Member]
Operating expenses:
Loss from continuing operations		$ 3,802	$ (34,303)		$ (22,470)	$ (126,228)
Income (loss) from discontinued operations, net of tax		(862)	(1,340)		(1,751)	(6,339)
Net income attributable to noncontrolling interests		(2,881)	(2,175)		(9,460)	(8,843)
Net loss attributable to Groupon, Inc.		$ 59	$ (37,818)		$ (33,681)	$ (141,410)
Basic net income (loss) per share
Income (Loss) from Continuing Operations, Per Basic and Diluted Share	[2]	$ 0.00	$ (0.06)	[3]	$ (0.06)	$ (0.23)	[3]
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic and Diluted Share	[2]	0.00	(0.01)	[3]	0.00	(0.02)	[3]
Earnings Per Share, Basic and Diluted	[2]	$ 0.00	$ (0.07)	[3]	$ (0.06)	$ (0.25)	[3]
Weighted average number of shares outstanding
Basic, weighted average number of shares outstanding		557,221,040	572,816,215		559,726,154	575,890,315

[1] (1)The structure of the Company's common stock changed during the year ended December 31, 2016. Refer to Note 8, Stockholders' Equity and Compensation Arrangements, and Note 12, Income (Loss) per Share, for additional information.

[2] Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017Basic and diluted net income (loss) per share: Numerator Net income (loss) - continuing operations $3,802 $(22,470)Less: Net income (loss) attributable to noncontrolling interests 2,881 9,460Net income (loss) attributable to common stockholders - continuing operations $921 $(31,930)Net income (loss) attributable to common stockholders - discontinued operations (862) (1,751)Net income (loss) attributable to common stockholders $59 $(33,681)Denominator Shares used in computation of basic net income (loss) per share 557,221,040 559,726,154Weighted-average effect of dilutive securities 9,448,009 —Shares used in computation of diluted net income (loss) per share 566,669,049 559,726,154Basic and diluted net income (loss) per share (1): Continuing operations $0.00 $(0.06)Discontinued operations (0.00) (0.00)Basic and diluted net income (loss) per share $0.00 $(0.06)(1)The potentially dilutive impact of the warrants and the convertible senior notes has been excluded from the calculation of diluted net income (loss) per share for the three and nine months ended September 30, 2017 as the effect on net income (loss) per share from continuing operations was antidilutive. The potentially dilutive impact of equity awards has also been excluded from the calculation of diluted net income (loss) per share for the nine months ended September 30, 2017 as the effect on net income (loss) per share from continuing operations was antidilutive.

[3] (1)The potentially dilutive impacts of a conversion of Class B to Class A shares, outstanding equity awards, warrants and convertible senior notes have been excluded from the calculation of diluted net income (loss) per share for the three and nine months ended September 30, 2016 as their effect on net income (loss) per share from continuing operations was antidilutive.