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SEGMENTS - Adjusted Contribution Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting [Abstract]
Adjusted contribution	$ 19,749	$ 24,738	$ 52,530	$ 64,216
Amortization and impairment of deferred FI implementation costs	1,641	789	3,640	2,173
Delivery costs	3,498	3,070	10,403	9,686
Sales and marketing expense	11,432	11,074	32,805	31,458
Research and development expense	4,627	3,018	12,444	8,741
General and administration expense	12,757	12,218	35,235	27,558
Depreciation and amortization expense	1,933	1,167	5,809	3,181
Total other expense (income)	(783)	1,149	839	1,990
Loss before income taxes	$ (15,356)	$ (7,747)	$ (48,645)	$ (20,571)

X

- Definition

Adjusted contribution represents our revenue less FI Share and other third-party costs. We refined our definition of adjusted contribution used by our CODM to exclude the impact of non-cash charges related to the issuance of equity to our FI partners and the impact of amortization and impairment of deferred FI implementation costs.

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Contract with Customer, Asset, Deferred Implementation Costs , Amortization

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Costs to deliver ad campaigns

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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The aggregate total amount of expenses directly related to the marketing or selling of products or services.

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