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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Mar. 31, 2019 | Mar. 31, 2018 | Sep. 30, 2020 | Sep. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | $ 283,423 | $ 1,415,803 | $ 342,907 | $ 1,475,088 | $ 1,513,779 | $ 870,843 | $ 1,033,828
United States |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 228,255 |  | 271,671 |  |  | 703,158 | 819,347
Canada |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 20,299 |  | 25,895 |  |  | 55,164 | 72,837
Other |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 34,869 |  | 45,341 |  |  | 112,521 | 141,644
Food & Beverage |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 48,153 |  | 64,774 |  |  | 152,586 | 204,743
Retail |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 39,390 |  | 39,420 |  |  | 108,882 | 111,899
Consumer Products |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 37,175 |  | 38,510 |  |  | 111,371 | 119,866
Communications |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 20,227 |  | 48,147 |  |  | 58,234 | 136,819
Automotive |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 13,399 |  | 19,125 |  |  | 51,610 | 55,857
Technology |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 41,220 |  | 28,148 |  |  | 129,569 | 84,294
Healthcare |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 25,120 |  | 25,152 |  |  | 71,970 | 74,403
Financials |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 22,529 |  | 28,054 |  |  | 66,282 | 81,049
Transportation and Travel/Lodging |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | 9,674 |  | 20,541 |  |  | 35,226 | 65,111
Other |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |
Services | $ 26,536 |  | $ 31,036 |  |  | $ 85,113 | $ 99,787

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