Equity-Based Compensation - Schedule of Equity Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total equity compensation expense	$ 3,484	$ 1,162	$ 3,203	$ 8,444
Operating Expenses [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total equity compensation expense	711	654	(366)	2,687
Selling, General and Administrative Expenses [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total equity compensation expense	$ 2,773	$ 508	$ 3,569	$ 5,757