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Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory [Line Items]    
Raw materials $ 34,752 $ 29,328
Work-in-process 7,227 8,360
Finished products 19,802 17,144
Total inventories, net $ 61,781 $ 54,832