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Business Acquisition - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 01, 2019
Jun. 30, 2019
Jun. 30, 2019
Business Acquisition [Line Items]      
Acquisition related costs   $ 342 $ 380
Stihler Electronic GmbH      
Business Acquisition [Line Items]      
Net assets acquired $ 15,476    
Business combination future contingent consideration milestone payment 653    
Acquisition related costs   $ 342 $ 380
Estimated goodwill, expected tax deductible amount $ 2,524    
Stihler Electronic GmbH | Other intangible assets      
Business Acquisition [Line Items]      
Estimated useful life 9 years