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Summary of Significant Accounting Policies - Schedule of Change in Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Accounting Policies [Abstract]        
Accumulated other comprehensive loss, beginning of period     $ (6,199)  
Unrealized gains (losses) from foreign currency translation adjustments $ 292 $ (2,785) (285) $ (3,056)
Accumulated other comprehensive loss, end of period $ (6,484)   $ (6,484)