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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
By Location |
Disaggregation of Revenue [Line Items] |
Disaggregation of Revenue | The following table presents revenue disaggregated by geography for the twelve months ended December 31, 2020, 2019 and 2018:
| Twelve Months Ended December 31,
Geographic Location | Reportable Segment |  | 2020 |  | 2019 |  | 2018
United States | All |  | $ | 959,636 |  |  | $ | 1,116,045 |  |  | $ | 1,152,399 |
Canada | All |  | 81,930 |  |  | 105,067 |  |  | 124,001 |
Other | All |  | 157,445 |  |  | 194,691 |  |  | 198,688 |
|  |  | $ | 1,199,011 |  |  | $ | 1,415,803 |  |  | $ | 1,475,088 |
Industry Vertical |
Disaggregation of Revenue [Line Items] |
Disaggregation of Revenue | The following table presents revenue disaggregated by client industry vertical for the twelve months ended December 31, 2020, 2019 and 2018:
|  |  |  | Twelve Months Ended December 31,
Industry |  | Reportable Segment |  | 2020 |  | 2019 |  | 2018
Food & Beverage |  | All |  | $ | 205,939 |  |  | $ | 280,094 |  |  | $ | 313,368 |
Retail |  | All |  | 148,293 |  |  | 148,851 |  |  | 152,552 |
Consumer Products |  | All |  | 165,105 |  |  | 167,324 |  |  | 162,524 |
Communications |  | All |  | 77,443 |  |  | 184,870 |  |  | 178,410 |
Automotive |  | All |  | 67,339 |  |  | 78,985 |  |  | 88,807 |
Technology |  | All |  | 181,057 |  |  | 118,169 |  |  | 104,479 |
Healthcare |  | All |  | 100,727 |  |  | 102,221 |  |  | 127,547 |
Financials |  | All |  | 91,438 |  |  | 112,351 |  |  | 110,069 |
Transportation and Travel/Lodging |  | All |  | 44,510 |  |  | 88,958 |  |  | 86,419 |
Other |  | All |  | 117,160 |  |  | 133,980 |  |  | 150,913 |
|  |  |  | $ | 1,199,011 |  |  | $ | 1,415,803 |  |  | $ | 1,475,088 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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