| Jan 1,
2012 | Dec 30,
2012 | Dec 29,
2013 | Dec 28,
2014 | Jan 3,
2016 | Jan 1,
2017 | Dec 31,
2017 | Dec 30,
2018 | Dec 29,
2019 | Jan 3,
2021 | Jan 2,
2022 | Jan 1,
2023 |
|---|
| Net loss | -8 | -12 | -12 | -13 | -18 | -19 | -14 | -14 | -15 | -11 | -7 | -4 |
|---|
| Depreciation and amortization | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
|---|
| Stock-based compensation | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 3 | 2 | 3 | 2 |
|---|
| Write-down of inventories | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|---|
| Gain on forgiveness of PPP Loan | - | - | - | - | - | - | - | - | - | - | 1 | - |
|---|
| Loss (gain) on disposal of equipment | - | - | - | - | - | - | - | 0 | - | - | - | 0 |
|---|
| Bad debt expense | - | 0 | -0 | - | - | - | - | - | - | - | 0 | 0 |
|---|
| Accounts receivable | -3 | -0 | 2 | -2 | 0 | -1 | 0 | 1 | -0 | -0 | -0 | 2 |
|---|
| Contract assets | - | - | - | - | - | - | - | - | - | - | - | 2 |
|---|
| Inventories | 1 | -0 | 2 | 1 | -2 | -1 | 2 | 1 | -0 | -0 | -0 | 1 |
|---|
| Other assets | -0 | 0 | 0 | -1 | -0 | -0 | -0 | 1 | -0 | -1 | 0 | 0 |
|---|
| Trade payables | 0 | -1 | 1 | -2 | 0 | -1 | -0 | 0 | -0 | 0 | 0 | 2 |
|---|
| Accrued liabilities | -0 | 0 | 2 | -1 | -0 | 0 | 0 | 0 | -1 | 0 | 0 | -0 |
|---|
| Deferred income | - | - | - | - | - | - | - | - | 0 | -0 | 0 | -0 |
|---|
| Other long-term liabilities | 0 | -0 | -0 | -0 | 0 | -0 | -0 | 0 | -0 | - | 0 | -0 |
|---|
| Net cash used in operating activities | -2 | -9 | -9 | -11 | -12 | -15 | -13 | -13 | -12 | -7 | -3 | -4 |
|---|
| Capital expenditures for property and equipment | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 0 | 1 | 0 | 0 | 0 |
|---|
| Capitalized internal-use software | - | - | - | - | - | - | - | - | 0 | 1 | 1 | 1 |
|---|
| Net cash used in investing activities | -1 | -1 | -1 | -1 | -0 | -2 | -1 | -0 | -1 | -1 | -1 | -1 |
|---|
| Payment of finance lease obligations | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 |
|---|
| Proceeds from line of credit | - | - | - | - | - | 4 | 18 | 36 | 46 | 57 | 60 | 60 |
|---|
| Repayment of line of credit | - | - | - | - | - | - | 18 | 27 | 46 | 57 | 60 | 60 |
|---|
| Gross Proceeds from issuance of common stock | 2 | 13 | 26 | 5 | 1 | 11 | 18 | 16 | 9 | 9 | 1 | 5 |
|---|
| Stock issuance costs | - | - | 2 | -0 | - | 1 | 2 | 2 | 1 | 1 | 0 | 0 |
|---|
| Taxes paid related to net settlement of equity awards | - | - | - | - | - | - | - | 0 | 0 | 0 | 0 | - |
|---|
| Net cash provided by financing activities | 2 | 12 | 25 | 4 | 1 | 13 | 15 | 23 | 8 | 9 | 0 | 4 |
|---|
| Net (decrease) increase in cash, cash equivalents and restricted cash | - | - | - | - | - | - | - | 10 | -5 | 1 | -3 | -0 |
|---|
| Interest paid | - | - | - | - | - | - | - | 0 | 0 | 0 | 0 | 0 |
|---|
| Income taxes paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|---|
| Finance lease obligations entered in during the year | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | - | 1 | 1 | 1 |
|---|