Annual report pursuant to Section 13 and 15(d)

Property, Plant, and Equipment (Details Textual)

v3.19.3.a.u2
Property, Plant, and Equipment (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Property Plant And Equipment [Abstract]      
Depreciation $ 17,150 $ 16,452 $ 10,767