Segment Reporting and Geographic Data - Long-lived Assets by Country (Detail) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	[1]	$ 9,841	$ 4,754
United States [Member]
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	[1]	9,085	4,114
All Other Countries [Member]
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	[1]	$ 756	$ 640

[1] The Company’s only long-lived assets consist of property and equipment, net of depreciation, which are categorized based on their location of domicile.