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Note 5 - Balance Sheet Components - Balance Sheet Components (Details) - USD ($)
$ in Thousands
Sep. 28, 2025
Dec. 29, 2024
Work-in-process $ 670 $ 710
Finished goods 199 230
Inventory, Net 869 940
Work-in-process 593 690
Finished goods 25 28
Inventory, Noncurrent 618 718
Inventory, Current and Noncurrent 1,487 1,658
Prepaid expenses and other current assets:    
Prepaid taxes 210 498
Deferred charges 502 792
Other prepaid taxes, royalties, and other prepaid expenses 366 242
Other 183 134
Prepaid Expense and Other Assets, Current 1,261 1,666
Property and equipment, net:    
Property and equipment, gross 33,548 29,834
Less: Accumulated depreciation and amortization (16,901) (14,135)
Assets purchased through financing arrangements, net 16,647 15,699
Capitalized internal-use software, net:    
Capitalized internal-use software 1,284 798
Less: Accumulated amortization (203) (87)
Capitalized Computer Software, Net 1,081 711
Accrued liabilities:    
Accrued compensation 415 842
Accrued employee benefits 238 75
Accrued payroll tax 99 124
Other 200 546
Accrued Liabilities, Current 952 1,587
Equipment [Member]    
Property and equipment, net:    
Property and equipment, gross 9,566 9,598
Software Tools [Member]    
Property and equipment, net:    
Property and equipment, gross 3,077 3,402
Tooling [Member]    
Property and equipment, net:    
Property and equipment, gross 18,428 14,357
Software and Software Development Costs [Member]    
Property and equipment, net:    
Property and equipment, gross 1,776 1,776
Furniture and Fixtures [Member]    
Property and equipment, net:    
Property and equipment, gross 54 54
Leasehold Improvements [Member]    
Property and equipment, net:    
Property and equipment, gross $ 647 $ 647