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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2016 country	Dec. 31, 2021 USD ($) claimsFiled numberOfPlaintiff	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Operation strategic alternatives, number of country | country	12
Benefit from decrease in indemnification liability			$ 400	$ 2,200
Less: Indemnification liabilities		$ 2,800
Indemnification Liability, Maximum Exposure		11,700
Income (loss) from discontinued operations, net of tax		$ 0	$ 382	$ 2,597
Groupon Latin America
Loss Contingencies [Line Items]
Indemnification Liability					$ 5,400
Derivative Lawsuits
Loss Contingencies [Line Items]
Loss contingency, number of plaintiffs | numberOfPlaintiff		3
Loss contingency, number of lawsuits | claimsFiled		3

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