Accrued Expenses and Other Liabilities - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Sales and marketing	$ 13,851	$ 21,964
Income taxes	9,250
Compensation and benefits	5,104	14,818
Manufacturing costs	1,628	1,979
Customer deposits	1,515	1,230
Billings in excess of revenues	984	1,842
Rent obligations	675	779
Other	4,025	3,654
Total accrued expenses and other liabilities	$ 37,032	$ 46,266