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Restructuring - Schedule of Components of Restructuring Expenses Including in Condensed Consolidated Statements of Income (Loss) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Restructuring Cost And Reserve [Line Items]          
Total restructuring expenses $ 1,192 $ 1,400 $ 1,745 $ 3,463 $ 6,014
Selling, General and Administrative Expenses [Member]          
Restructuring Cost And Reserve [Line Items]          
Total restructuring expenses 489 703 572 1,547  
Research and Development Expenses [Member]          
Restructuring Cost And Reserve [Line Items]          
Total restructuring expenses 681 647 1,117 1,231  
Cost of Sales [Member]          
Restructuring Cost And Reserve [Line Items]          
Total restructuring expenses $ 22 $ 50 $ 56 $ 685