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Segment Information - Schedule of Revenue and Property and Equipment By Geographic Data (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues $ 1,559,869 $ 1,723,691 $ 1,492,639
Net property, equipment and capitalized software 188,340 212,475 187,868
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues 1,401,144 1,535,985 1,287,405
Net property, equipment and capitalized software 176,348 200,101 176,111
Other international      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total revenues 158,725 187,706 205,234
International      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Net property, equipment and capitalized software $ 11,992 $ 12,374 $ 11,757