CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue	$ 125,702	$ 124,615	$ 242,889	$ 247,699
Cost of revenue	11,276	11,948	22,165	24,475
Gross profit	114,426	112,667	220,724	223,224
Operating expenses:
Marketing	41,399	36,520	75,836	65,329
Selling, general and administrative	70,669	77,212	140,509	151,610
Restructuring and related charges (credits)	(46)	(379)	91	(283)
Gain on sale of assets	0	(5,044)	0	(5,160)
Gain on sale of business	(10,650)	0	(10,650)	0
Total operating expenses	101,372	108,309	205,786	211,496
Income (loss) from operations	13,054	4,358	14,938	11,728
Other income (expense), net	18,466	(4,483)	26,037	(17,165)
Income (loss) from continuing operations before provision (benefit) for income taxes	31,520	(125)	40,975	(5,437)
Provision (benefit) for income taxes	10,927	9,287	12,355	15,481
Income (loss) from continuing operations	20,593	(9,412)	28,620	(20,918)
Income (loss) from discontinued operations, net of tax	0	0	(471)	0
Net income (loss)	20,593	(9,412)	28,149	(20,918)
Net (income) loss attributable to noncontrolling interests	(256)	(623)	(637)	(1,388)
Net income (loss) attributable to Groupon, Inc.	$ 20,337	$ (10,035)	$ 27,512	$ (22,306)
Basic net income (loss) per share:
Continuing operations (in usd per share)	$ 0.51	$ (0.25)	$ 0.70	$ (0.58)
Discontinued operations (in usd per share)	0	0	(0.01)	0
Basic net income (loss) per share (in usd per share)	0.51	(0.25)	0.69	(0.58)
Diluted net income (loss) per share:
Continuing operations (in usd per share)	0.46	(0.25)	0.65	(0.58)
Discontinued operations (in usd per share)	0	0	(0.01)	0
Diluted net income (loss) per share (in usd per share)	$ 0.46	$ (0.25)	$ 0.64	$ (0.58)
Weighted average number of shares outstanding:
Basic weighted average number of shares outstanding (in shares)	40,034,041	39,430,656	39,922,318	38,570,401
Diluted weighted average number of shares outstanding (in shares)	50,780,325	39,430,656	43,357,429	38,570,401
Comprehensive income (loss):
Net income (loss)	$ 20,593	$ (9,412)	$ 28,149	$ (20,918)
Other comprehensive income (loss) from continuing operations
Net change in unrealized gain (loss) on foreign currency translation adjustments	(22,698)	4,602	(33,069)	16,954
Other comprehensive income (loss) from continuing operations	(22,698)	4,602	(33,069)	16,954
Other comprehensive income (loss) from discontinued operations	0	0	0	0
Other comprehensive income (loss)	(22,698)	4,602	(33,069)	16,954
Comprehensive income (loss)	(2,105)	(4,810)	(4,920)	(3,964)
Comprehensive income attributable to noncontrolling interests	(256)	(623)	(637)	(1,388)
Comprehensive income (loss) attributable to Groupon, Inc.	$ (2,361)	$ (5,433)	$ (5,557)	$ (5,352)