Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Detail)

v3.19.1
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Leases [Abstract]      
Minimum lease period (in excess of) 1 year    
Rental expense for all operating leases $ 19,281 $ 16,814 $ 16,160