Annual report pursuant to Section 13 and 15(d)

Note 4 - Consolidated Financial Statement Details (Details Textual)

v3.20.1
Note 4 - Consolidated Financial Statement Details (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Depreciation, Total $ 6,548 $ 3,791 $ 3,588
Restructuring Charges, Total 7,955 172 1,732
Amortization of Intangible Assets, Total 7,188 1,065
Goodwill, Ending Balance 18,165 18,165  
Dongguan Facility Closure [Member]      
Restructuring Charges, Total 5,000  
Dongguan Facility Closure [Member] | Restructuring Charges Related to Write Down of Property, Plant and Equipment [Member]      
Restructuring Charges, Total 158  
Machinery and Equipment [Member]      
Capital Leased Assets, Gross, Total 2,275 2,275  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 974 409  
Machinery and Equipment [Member] | Dongguan Facility Closure [Member]      
Property, Plant and Equipment, Transfers and Changes 253    
Accumulated Depreciation, Depletion and Amortization, Write Down 209    
Machinery and Equipment [Member] | Dongguan Facility Closure [Member] | Restructuring Charges Related to Write Down of Property, Plant and Equipment [Member]      
Restructuring Charges, Total 44    
Machinery and Equipment [Member] | Assets Under Capital Lease [Member]      
Depreciation, Total 565 187  
Building and Building Improvements [Member]      
Capital Leased Assets, Gross, Total 9,082 9,082  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 900 96  
Building and Building Improvements [Member] | Assets Under Capital Lease [Member]      
Depreciation, Total 804 96  
Furniture and Fixtures [Member]      
Capital Leased Assets, Gross, Total 307 158  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 52 6  
Furniture and Fixtures [Member] | Dongguan Facility Closure [Member]      
Property, Plant and Equipment, Transfers and Changes 25    
Accumulated Depreciation, Depletion and Amortization, Write Down 19    
Furniture and Fixtures [Member] | Dongguan Facility Closure [Member] | Restructuring Charges Related to Write Down of Property, Plant and Equipment [Member]      
Restructuring Charges, Total 6    
Furniture and Fixtures [Member] | Assets Under Capital Lease [Member]      
Depreciation, Total 46 6  
Computer Equipment [Member]      
Capital Leased Assets, Gross, Total 91 91  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 51 20  
Computer Equipment [Member] | Dongguan Facility Closure [Member]      
Property, Plant and Equipment, Transfers and Changes 220    
Accumulated Depreciation, Depletion and Amortization, Write Down 195    
Computer Equipment [Member] | Dongguan Facility Closure [Member] | Restructuring Charges Related to Write Down of Property, Plant and Equipment [Member]      
Restructuring Charges, Total 25    
Computer Equipment [Member] | Assets Under Capital Lease [Member]      
Depreciation, Total 31 $ 20  
Leasehold Improvements [Member] | Dongguan Facility Closure [Member]      
Property, Plant and Equipment, Transfers and Changes 111    
Accumulated Depreciation, Depletion and Amortization, Write Down 28    
Leasehold Improvements [Member] | Dongguan Facility Closure [Member] | Restructuring Charges Related to Write Down of Property, Plant and Equipment [Member]      
Restructuring Charges, Total $ 83