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Intangible Assets - Reconciliation of Intangible Assets (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]    
Gross carrying amount at beginning of period $ 68,322 $ 68,322
Gross carrying amount at end of period 68,322 68,322
Accumulated amortization at beginning of period (43,113) (40,653)
Amortization expense (2,460) (2,460)
Accumulated amortization at end of period (45,573) (43,113)
Net book value at end of period $ 22,749 $ 25,209