Revenue - Summary of Opening and Closing Balances of Company's Customer Receivables and Current and Long-term Contract Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer receivables	$ 77,001	$ 40,785
Contract liabilities—current	7,376	8,249
Contract liabilities—noncurrent	11,264	$ 13,106
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer receivables	36,216
Contract liabilities—current	(873)
Contract liabilities—noncurrent	$ (1,842)