Intangible Assets - Definite-lived Narrative (Details) atm in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) atm	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Finite-Lived Intangible Assets [Line Items]
Exclusive license agreement amortization expense	$ 10.6	$ 11.7	$ 10.0
ATM Processing Contracts
Finite-Lived Intangible Assets [Line Items]
Purchase consideration	$ 9.1
Number of ATMs acquired | atm	62
Weighted average amortization period	5 years
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	3 years
Minimum | Merchant and bank-branding contracts/relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	4 years
Minimum | Exclusive License Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	2 years
Minimum | Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	1 year
Minimum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	1 year
Maximum | Merchant and bank-branding contracts/relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	10 years
Maximum | Exclusive License Agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	10 years
Maximum | Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	15 years
Maximum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life	5 years