Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	$ 9,180	$ 9,312
Accumulated amortization	(6,977)	(6,935)
Intangible asset, Net amount	2,203	2,377
Intellectual Property Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	9,180	9,312
Accumulated amortization	(6,977)	(6,935)
Intangible asset, Net amount	$ 2,203	$ 2,377