Basis of Presentation and Summary of Significant Accounting Policies - Capitalized Software Development Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basis of Presentation and Summary of Significant Accounting Policies
Software development cost, amortization period	2 years
Capitalized Software Development
Basis of Presentation and Summary of Significant Accounting Policies
Service contracts included in other assets , noncurrent	$ 14,334	$ 11,505
Amortization expenses	4,700	5,800	$ 5,500
ASU 2018-15 | Capitalized Software Development
Basis of Presentation and Summary of Significant Accounting Policies
Service contracts included in other assets , noncurrent	1,700	1,000
Amortization expenses	$ 1,000	$ 900