Annual report pursuant to Section 13 and 15(d)

Accrued Expenses and Other Liabilities (Details)

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Accrued Expenses and Other Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Components of accrued expenses    
Accrued compensation and related taxes $ 43,724 $ 35,287
Accrued investment manager fees 39,324 31,278
Sales and use tax payable 9,037 10,108
Accrued professional services 4,985 3,213
Definite consideration 1,250 445
Other accrued expenses 7,577 7,432
Total accrued expenses $ 105,897 $ 87,763