Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021 USD ($) Customer shares	Dec. 31, 2020 USD ($) Customer shares	Dec. 31, 2019 USD ($) Customer
Summary Of Significant Accounting Policies [Line Items]
Short-term investments	$ 0	$ 0
Additions to capitalized software development costs	$ 0	0	$ 0
Payment terms	The Company’s standard payment terms are generally within 180 days of invoicing. If extended payment terms are granted to customers, those terms generally do not exceed one year.
Description of warranty	The Company provides a standard software assurance warranty to repair, replace, or refund software that does not perform in accordance with documentation. The standard software assurance warranty period is generally less than one year.
Amortization period for capitalized contract costs	3 years
Product support and cloud subscriptions period	1 year
Capitalized cost to obtain customer contracts net	$ 4,700,000	6,100,000
Advertising costs	1,200,000	100,000	900,000
Prepaid advertising costs	$ 0	$ 0
Common stock, conversion ratio	one
Preferred stock, shares outstanding | shares	0	0
Cumulative foreign currency translation amount	$ (7,500,000)	$ (3,900,000)	(9,800,000)
Foreign currency translation adjustments, tax	0	0	0
Transaction gains (losses) arising from transactions denominated in foreign currencies	$ 2,500,000	$ (7,600,000)	$ (1,000,000.0)
Customer Concentration Risk | Sales Revenue, Goods, Net
Summary Of Significant Accounting Policies [Line Items]
Number of individual customer accounted for 10% or more of net accounts receivable | Customer	0	0
Number of individual customer accounted for 10% or more of total revenues | Customer	0	0	0
Class A
Summary Of Significant Accounting Policies [Line Items]
Common stock, voting rights, per share	one
Class B Convertible
Summary Of Significant Accounting Policies [Line Items]
Common stock, voting rights, per share	ten
Sales and Marketing
Summary Of Significant Accounting Policies [Line Items]
Amortization expenses related to capitalized cost	$ 2,700,000	$ 3,100,000	$ 2,900,000
Convertible Senior Notes due 2025
Summary Of Significant Accounting Policies [Line Items]
Interest rate, fixed percentage		0.75%
Computer Equipment And Purchased Software
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets, years	3 years
Office Equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets, years	5 years
Office Furniture
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets, years	10 years
Corporate Aircraft
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of assets, years	19 years
Estimated salvage value	21.00%