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Accrued Expenses and Other Liabilities - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Sales and marketing $ 12,906 $ 25,379
Compensation and benefits 5,204 19,124
Operating lease liabilities 6,859 0
Income taxes 6,138 0
Customer deposits 2,722 2,058
Manufacturing costs 2,146 3,744
Billings in excess of revenues 747 512
Other 5,925 5,474
Total accrued expenses and other liabilities $ 42,647 $ 56,291