v3.19.3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 USD ($) customer | Sep. 30, 2018 customer | Sep. 30, 2019 USD ($) customer third_party_processor | Sep. 30, 2018 customer | Dec. 31, 2018 USD ($) third_party_processor | Jan. 01, 2019 USD ($)
Concentration Risk [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets | $ 108,670 |  | $ 108,670 |  |  |
Operating lease liability | 132,236 |  | 132,236 |  |  |
Derecognition of build-to-suit lease asset | 0 |  | 0 |  | $ (149,000) |
Derecognition of build-to-suit lease liability | $ 0 |  | $ 0 |  | $ (149,000) |
Total Net Revenue | Customer Concentration Risk |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Number of customers accounting for greater than 10% of total net revenue | customer | 0 | 0 | 0 | 0 |  |
Settlements Receivable | Credit Concentration Risk |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Number of third party processors | third_party_processor |  |  | 3 |  | 3 |
Settlements Receivable | Credit Concentration Risk | Third Party Processor One |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, settlements receivable |  |  | 46.00% |  | 45.00% |
Settlements Receivable | Credit Concentration Risk | Third Party Processor Two |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, settlements receivable |  |  | 34.00% |  | 33.00% |
Settlements Receivable | Credit Concentration Risk | Third Party Processor Three |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, settlements receivable |  |  | 9.00% |  | 9.00% |
Minimum |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Settlements receivable period |  |  | 1 day |  |  |
Maximum |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Settlements receivable period |  |  | 2 days |  |  |
Accounting Standards Update 2016-02 |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  | $ 112,000
Operating lease liability |  |  |  |  |  | 135,600
Derecognition of build-to-suit lease asset |  |  |  |  |  | 149,000
Derecognition of build-to-suit lease liability |  |  |  |  |  | $ 149,000

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