Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Interim Consolidated Financial Statement Details - Consolidated Balance Sheets (Parenthetical) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2020
Sep. 29, 2019
Dec. 29, 2019
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment     $ 4,767 $ 4,902  
Machinery and Equipment [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total $ 4,193   4,193   $ 2,275
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 1,539   1,539   974
Machinery and Equipment [Member] | Dongguan Facility Closure [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Property, Plant and Equipment, Transfers and Changes     1,466    
Accumulated Depreciation, Depletion and Amortization, Write Down     1,463    
Machinery and Equipment [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment 134 $ 142 356 426  
Building and Building Improvements [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total 9,082   9,082   9,082
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 1,504   1,504   900
Building and Building Improvements [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment 201 201 604 603  
Furniture and Fixtures [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Capital Leased Assets, Gross, Total 307   307   307
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 101   101   52
Furniture and Fixtures [Member] | Assets Under Finance Lease [Member]          
Condensed Balance Sheet Statements Captions [Line Items]          
Depreciation of property, plant and equipment 16 9 49 29  
Computer Equipment [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 73   73   $ 51
Depreciation of property, plant and equipment $ 7 $ 8 $ 22 $ 23