Annual report pursuant to Section 13 and 15(d)

Consolidated Financial Statement Details - Consolidated Balance Sheets (Parenthetical) (Details)

v3.20.4
Consolidated Financial Statement Details - Consolidated Balance Sheets (Parenthetical) (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2020
Jan. 03, 2021
Jan. 03, 2021
Dec. 29, 2019
Dec. 30, 2018
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment     $ 6,168 $ 6,548 $ 3,791
Restructuring Charges, Total     4,125 7,955  
Zacatecas Manufacturing Facility          
Condensed Balance Sheet Statements Captions [Line Items]          
Restructuring Charges, Total $ 783 $ 2,317 4,383    
Machinery and Equipment [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total   4,852 4,852 2,275  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation   1,693 1,693 974  
Property, Plant and Equipment, Transfers and Changes     1,884    
Accumulated Depreciation, Depletion and Amortization, Write Down     1,872    
Machinery and Equipment [Member] | Zacatecas Manufacturing Facility          
Condensed Balance Sheet Statements Captions [Line Items]          
Property, Plant and Equipment, Transfers and Changes     101    
Accumulated Depreciation, Depletion and Amortization, Write Down     40    
Restructuring Charges, Total     61    
Machinery and Equipment [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment     719 565  
Building and Building Improvements [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total   9,684 9,684 9,082  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation   1,707 1,707 900  
Building and Building Improvements [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment     807 804  
Furniture and Fixtures [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total   343 343 307  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation   118 118 52  
Furniture and Fixtures [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment     66 46  
Computer Hardware and Software [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total   91 91 91  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation   $ 81 81 51  
Depreciation of property, plant and equipment     $ 30 $ 31