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Nature of Business and Summary of Significant Accounting - Revision of Prior Period Financial Statements and Prior Period Adjustments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |
Other current and noncurrent assets and liabilities | $ (31,661) | $ (4,488) | $ (21,739)
Net cash flows from operating activities | 220,473 | 314,895 | 132,605
Cash flows from financing activities: |  |  |
Net (decrease) increase in settlement assets and liabilities | (37,834) | 101,681 | 1,127
Net cash flows from financing activities | (256,878) | (159,889) | 668,350
Net increase in cash and cash equivalents | (81,240) | 124,250 | (31,021)
Cash and cash equivalents, including settlement deposits, beginning of period | 265,382 | 141,132 | 172,153
Cash and cash equivalents, including settlement deposits, end of period | 184,142 | 265,382 | 141,132
As reported |  |  |
Cash flows from operating activities: |  |  |
Other current and noncurrent assets and liabilities |  | 16,919 | (16,695)
Net cash flows from operating activities |  | 336,302 | 137,649
Cash flows from financing activities: |  |  |
Net (decrease) increase in settlement assets and liabilities |  | 0 | 0
Net cash flows from financing activities |  | (261,570) | 667,223
Net increase in cash and cash equivalents |  | 43,976 | (27,104)
Cash and cash equivalents, including settlement deposits, beginning of period | 165,374 | 121,398 | 148,502
Cash and cash equivalents, including settlement deposits, end of period |  | 165,374 | 121,398
Revision adjustment |  |  |
Cash flows from operating activities: |  |  |
Other current and noncurrent assets and liabilities |  | (21,407) | (5,044)
Net cash flows from operating activities |  | (21,407) | (5,044)
Cash flows from financing activities: |  |  |
Net (decrease) increase in settlement assets and liabilities |  | 101,681 | 1,127
Net cash flows from financing activities |  | 101,681 | 1,127
Net increase in cash and cash equivalents |  | 80,274 | (3,917)
Cash and cash equivalents, including settlement deposits, beginning of period | $ 100,008 | 19,734 | 23,651
Cash and cash equivalents, including settlement deposits, end of period |  | $ 100,008 | $ 19,734

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