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Description of Business and Summary of Significant Accounting Policies - Other (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($) item	Jun. 30, 2020 USD ($) item segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Minimum number of merchants \| item	550,000	550,000
Number of reportable segments \| segment		2
Cash and Cash Equivalents and Merchant Reserves
Settlement related cash balances	$ 148,100	$ 148,100		$ 178,800
Merchant reserve cash balances	99,900	99,900		$ 85,800
Goodwill and Intangible Assets
Impairment of intangible assets	782	$ 782	$ 6,632
Trademarks, definite-lived
Goodwill and Intangible Assets
Impairment of intangible assets	$ 800
EVO LLC
Ownership interest (as a percent)		50.40%
Minimum
Number of markets \| item	50	50