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Restructuring Expense - Schedule of Total Liability For Restructuring Expenses and Their Utilization (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Restructuring And Related Activities [Abstract]    
Charged $ 490 $ 490
Restructuring charges at end of period $ 490 $ 490