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Accrued Expenses (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]    
Accrued data costs $ 21,295 $ 19,593
Payroll and payroll-related 9,372 15,412
Accrued interest on senior secured convertible notes 6,120 6,120
Professional fees 3,958 4,118
Restructuring accrual 349 992
Other 7,760 9,272
Total accrued expenses $ 48,854 $ 55,507