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Restructuring Expense - Schedule of Total Liability For Restructuring Expenses and Their Utilization (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Restructuring And Related Activities [Abstract]    
Accrued restructuring charges at beginning of period $ 490  
Charged 1,802 $ 2,292
Paid (1,489) (1,489)
Accrued restructuring charges at end of period $ 803 $ 803