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Intangible Assets - Schedule of Patent Cost and Other Asset (Detail) - Patents [Member] - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Patent costs $ 1,030 $ 1,686
Accumulated amortization (772) (1,354)
Finite-lived intangible assets, net $ 258 $ 332