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v3.23.2

Stockholders' Equity (Details) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2023 shares | Mar. 22, 2023 USD ($) $ / shares shares | Mar. 17, 2023 shares | Jul. 01, 2023 USD ($) $ / shares shares | Jul. 02, 2022 USD ($) shares | Jul. 01, 2023 USD ($) $ / shares shares | Jul. 02, 2022 USD ($) | Dec. 31, 2022 $ / shares shares | Jan. 01, 2022 shares
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  | 10,000,000 |  | 10,000,000 |  | 10,000,000 |
Stock issued for services, (in shares) |  |  |  | 0 | 0 |  |  |  |
Common Stock, par value (in usd per share) | $ / shares |  |  |  | $ 0.001 |  | $ 0.001 |  | $ 0.001 |
Common stock, issued shares (in shares) |  |  |  | 3,768,878 |  | 3,768,878 |  | 2,827,410 |
Common stock, outstanding shares (in shares) |  |  |  | 3,768,878 |  | 3,768,878 |  | 2,827,410 |
Options outstanding (in share) |  |  |  | 114,000 |  | 114,000 |  | 110,000 | 117,500
Options granted (in share) |  |  |  |  |  | 10,000 |  |  |
Preferred stock, outstanding shares (in shares) |  |  |  | 209,706 |  | 209,706 |  | 222,588 |
Stock Options |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Share-based compensation expense | $ |  |  |  | $ 4,000 | $ 1,000 | $ 12,000 | $ 1,000 |  |
Unrecognized compensation expense, net of estimated forfeitures | $ |  |  |  | $ 1,100 |  | $ 1,100 |  |  |
2016 Plan |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Options authorized for issuance (in share) |  |  |  | 800,000 |  | 800,000 |  |  |
Options outstanding (in share) |  |  |  | 100,000 |  | 100,000 |  | 90,000 |
2011 Plan |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Options outstanding (in share) |  |  |  | 14,000 |  | 14,000 |  | 20,000 |
Additional awards to be granted after adoption of 2016 plan (in share) |  |  |  |  |  | 0 |  |  |
Series A-1 Preferred |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, conversion ratio |  |  |  | 0.05 |  | 0.05 |  |  |
Conversion of stock, shares issued (in shares) | 7,697 |  | 5,185 |  |  | 12,882 |  |  |
Preferred stock, outstanding shares (in shares) |  |  |  | 209,706 |  | 209,706 |  | 222,588 |
Articles of Incorporation |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  | 200,000,000 |  | 200,000,000 |  |  |
Securities Purchase Agreement |  |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |  |
Common stock offering shares (in shares) |  | 361,000 |  |  |  |  |  |  |
Common Stock, par value (in usd per share) | $ / shares |  | $ 0.001 |  |  |  |  |  |  |
Common stock purchase price per share (in usd per share) | $ / shares |  | $ 1.17 |  |  |  |  |  |  |
Proceeds from sale of common stock | $ |  | $ 422 |  |  |  |  |  |  |

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