Revenue from Contracts with Customers - Summary of Significant Changes in Contract Assets and Contract Liabilities Balances (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Revenue From Contract With Customer [Abstract]
Contract assets at January 1, 2021	$ 2,870
Contract liabilities at January 1, 2021	(56,927)
Net balance at January 1, 2021	(54,057)
Decrease due to amortization of revenue included in the beginning contract liability balance	11,340
Increase due to cash received, excluding amounts recognized as revenue during the period	(18,313)
Increase due to revenue recognized during the period but contingent on future performance	1,026
Decrease due to transfer to receivables during the period	(700)
Net balance at March 31, 2021	(60,704)
Contract assets at March 31, 2021	3,196
Contract liabilities at March 31, 2021	$ (63,900)