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Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]        
Accrued salaries, benefits and bonus $ 13,378 $ 24,737    
Accrued professional, consulting and lobbying fees 8,993 3,235    
Accrued warranty expense 1,220 1,476 $ 1,027 $ 898
Accrued income and other taxes 2,093 3,362    
Other accrued expenses 10,720 12,191    
Accrued liabilities $ 36,404 $ 45,001