Cover [Abstract] Document Information [Table] Document Information [Line Items] Document Type Document Type Document Annual Report Document Period End Date Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Smaller Reporting Company Entity Emerging Growth Company Emerging Growth Company ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Auditor Firm ID Auditor Name Auditor Location CONSOLIDATED BALANCE SHEETS Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net Inventory, Net Inventory, net Other Assets, Current Other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Operating Lease, Right-of-Use Asset Right-of-use - assets - operating leases, net Finance Lease, Right-of-Use Asset Right-of-use - assets - finance leases, net Other Assets, Noncurrent Other non-current assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses Operating Lease, Liability, Current Right-of-use - obligation - operating, current Less current portion of lease obligations Finance Lease, Liability, Current Right-of-use - obligation - finance, current Less current portion of lease obligations Other Liabilities, Current Other current liabilities Liabilities, Current Total current liabilities Convertible Notes Payable, Noncurrent Convertible notes payable Operating Lease, Liability, Noncurrent Right-of-use - obligation - operating, non-current Long-term portion of lease obligations Finance Lease, Liability, Noncurrent Right-of-use - obligation - finance, non-current Long-term portion of lease obligations Other Liabilities, Noncurrent Other non-current liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 6) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock, $0.001 par value; 100,000 shares authorized; 70,048 and 57,454 shares issued and outstanding as of January 3, 2026 and December 28, 2024 (of which 3,786 are treasury stock) Treasury Stock, Value Treasury stock Additional Paid in Capital, Common Stock Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Common Stock, Par or Stated Value Per Share Common stock, par value (in USD per share) Par value of shares issued and sold Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) Treasury Stock, Common, Shares Treasury stock (in shares) CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE OPERATIONS Revenue from Contract with Customer, Excluding Assessed Tax Net sales Cost of Goods and Services Sold Cost of sales Gross Profit Gross profit Operating Expenses Operating expense Operating Income (Loss) Loss from operations Nonoperating Income (Expense) [Abstract] Other income (expense): Other Nonoperating Income (Expense) Other income, net Interest Expense, Nonoperating Interest expense Nonoperating Income (Expense) Interest expense (income), net Total other (expense) income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax provision Income tax provision Net loss Net loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive gain: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Foreign currency adjustments Foreign currency adjustments Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for actuarial loss on defined benefit plan, attributable to parent. Other Comprehensive (Income) Loss, Actuarial Loss on Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Actuarial gain on defined benefit plan Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total other comprehensive gain Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Net Loss Per Share Net loss per share: Earnings Per Share, Basic Basic net loss per share (in dollars per share) Earnings Per Share, Diluted Diluted net loss per share (in dollars per share) Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Basic Shares used in computation of basic net loss per share (in shares) Weighted-average common shares outstanding (basic) (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average common shares outstanding (diluted) (in shares) Shares used in computation of diluted net (loss) income per share (in shares) CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid-in- Capital Treasury Stock, Common [Member] Treasury Stock Accumulated Other Comprehensive Income Accumulated Deficit Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Ending balance Beginning balance Shares, Outstanding Ending balance (in shares) Beginning balance (in shares) Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of shares in connection with restricted stock units vesting Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance of shares in connection with restricted stock units vesting (in shares) Stock Issued During Period, Value, Issued for Services Issuance of shares in connection with BOD fees Stock Issued During Period, Shares, Issued for Services Issuance of shares in connection with BOD fees (in shares) Aggregate change in value for stock issued during the period as a result of officers and directors stock purchase plan. Issuance of shares in connection with Officers and Directors Stock Purchas Plan Officers and directors stock purchase plan Number of shares issued during the period as a result of a directors and officers stock purchase plan. Issuance of shares in connection with Directors and Officers Stock Purchase Plan (in shares) Officers and directors stock purchase plan (in shares) Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of shares in connection with ESPP Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of shares in connection with ESPP (in shares) Stock Issued During Period, Value, New Issues Issuance of shares in connection with purchase agreement Stock Issued During Period, Shares, New Issues Issuance of shares in connection with purchase agreement (in shares) Aggregate number of shares issued and sold Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Issuance costs in connection with purchase agreement APIC, Share-based Payment Arrangement, Increase for Cost Recognition Share-based compensation Stock Repurchased During Period, Value Stock repurchase Stock repurchase Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Actuarial gain on defined benefit plan CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Depreciation Depreciation and amortization expense Amortization of Intangible Assets, Including Discontinued Operations Amortization of Intangible Assets Including Discontinued Operations Amortization of intangible assets Impairment of Long-Lived Assets Held-for-use Impairment loss on property and equipment Impairment of long-lived assets Paid-in-Kind Interest Noncash interest expense Paid in kind interest Share-based Compensation Share-based compensation expense Issuance of Stock and Warrants for Services or Claims Stock awards issued for non-employee director service Amount of adjustment for stock awards related to officers and directors stock purchase plan from payroll deferral. Stock awards related to officers and directors stock purchase plan from payroll deferral, Operating Activities Stock awards related to officers and directors stock purchase plan from payroll deferral Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Gain from disposition of assets Amortization of Debt Issuance Costs Amortization of deferred financing costs Gain (Loss) on Termination of Lease Loss on early lease termination Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Other Current Assets Other current assets Increase (Decrease) in Other Noncurrent Assets Other non-current assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Increase (Decrease) in Other Current Liabilities Other current liabilities The increase (decrease) during the reporting period in the aggregate amount of current operating lease liabilities. Increase Decrease in Current Operating Lease Liability Right-of-use obligation - operating leases - current The increase (decrease) during the reporting period in the aggregate amount of noncurrent operating lease liabilities. Increase Decrease in Noncurrent Operating Lease Liability Right-of-use obligation - operating leases - long-term Increase (Decrease) in Other Noncurrent Liabilities Other non-current liabilities Net Cash Provided by (Used in) Operating Activities Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Additions to property and equipment Payments to Acquire Intangible Assets Payments for intangible assets Proceeds from Sale of Property, Plant, and Equipment Proceeds from sale of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities Proceeds from Lines of Credit Borrowings from revolving loan payable Additional borrowings from revolving loan Repayments of Lines of Credit Payments made on revolving loan payable Proceeds from Convertible Debt Proceeds from convertible notes payable Finance Lease, Principal Payments Payments on finance leases Financing cash outflow from financing leases Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised Net proceeds from issuance of common stock for ESPP Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Gross proceeds from issuance of common stock Payments of Stock Issuance Costs Payment of issuance costs - common stock Payments Related to Tax Withholding for Share-based Compensation Statutory tax withholding payment for share-based compensation Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effect of exchange rate changes on cash Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash and cash equivalents Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash investing and financing activities: Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-use operating asset acquired Capital Expenditures Incurred but Not yet Paid Accrued asset purchases Represents share-based compensation expense capitalized in property and equipment. Share Based Compensation Expense Capitalized In Property And Equipment Share-based compensation expense capitalized in property and equipment Stock Issued Accrued issuance costs - purchase agreement Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Income Taxes Paid, Net Cash (received) paid during the period for income taxes Total income taxes received by jurisdiction Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid during the period for interest Cash (received) paid during the period for interest (income) expense, net. Interest (Received), Paid, Net Cash received during the period for interest Summary of Significant Accounting Policies and Nature of Operations Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Summary of Significant Accounting Policies and Nature of Operations Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Property and Equipment, Net Borrowings Line of Credit Facility [Table] Line of Credit Facility [Table] Line of Credit Facility [Line Items] Borrowings Debt Disclosure [Text Block] Borrowings Stockholders' Equity and Share-Based Compensation Shareholders' Equity and Share-based Payments [Text Block] Stockholders' Equity and Share-Based Compensation Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]