Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	$ 9,312	$ 9,486
Accumulated amortization	(6,935)	(6,759)
Intangible asset, Net amount	2,377	2,727
Intellectual Property Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	9,312	9,486
Accumulated amortization	(6,935)	(6,759)
Intangible asset, Net amount	$ 2,377	$ 2,727