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Goodwill and Intangible Assets - Finite Lived Intangible Assets Amortization Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]        
Intangible assets – finite life, net at beginning of period     $ 29,637 $ 31,283
Amortization expense $ (1,700) $ (1,800) (3,359) (3,498)
Transfers from indefinite life classification     3,150  
Acquisition and related adjustments       4,840
Foreign currency adjustments     (59) 11
Intangible assets – finite life, net at end of period $ 29,369 $ 32,636 $ 29,369 $ 32,636