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Property, Plant and Equipment - Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
Oct. 02, 2020
Jan. 03, 2020
Property Plant And Equipment [Abstract]    
Machinery and equipment $ 21,275 $ 17,173
Computer equipment and software 6,686 6,244
Furniture and fixtures 4,614 4,169
Leasehold improvements 11,200 10,151
Construction in process 10,293 8,477
Total property, plant and equipment, gross 54,068 46,214
Less accumulated depreciation 31,406 29,149
Total property, plant and equipment, net $ 22,662 $ 17,065