Revenue - Summary of Opening and Closing Balances of Company's Receivables and Current and Long-term Contract Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer receivables	$ 68,283	$ 97,566
Contract liabilities—current	5,880	5,810
Contract liabilities—noncurrent	13,577	$ 8,354
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer receivables	(29,283)
Contract liabilities—current	70
Contract liabilities—noncurrent	$ 5,223