Annual report pursuant to Section 13 and 15(d)

Property, Plant, and Equipment (Details Textual)

v3.8.0.1
Property, Plant, and Equipment (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Property Plant And Equipment [Abstract]      
Depreciation $ 10,767 $ 9,184 $ 8,442