Note 7 - Capital Stock	9 Months Ended
Oct. 01, 2023
Notes to Financial Statements
Disclosure of Employee Stock Ownership Plans [Text Block]	Note 7 — Capital Stock *Issuance of Common Stock* On March 21, 2023, the Company entered into common stock purchase agreements with certain investors for the sale of an aggregate of 450 thousand shares of common stock in registered direct offerings pursuant to our effective shelf registration statement on Form S-3 (File No. 333-266942), resulting in net cash proceeds of approximately $2.3 million. Issuance costs related to the registered direct offering were insignificant. The purchase price for each share of common stock was $5.14. On August 17, 2022, the Company filed a Registration Statement on Form S-3 (File No. 333-266942) with the SEC, under which we may sell, from time-to-time common stock, preferred stock, depositary shares, warrants, debt securities, and units, individually or as units comprised of one or more of the other securities or a combination thereof. The Company's registration statement became effective on August 26, 2022.

Note 7 - Capital Stock

9 Months Ended

Oct. 01, 2023

Disclosure of Employee Stock Ownership Plans [Text Block]

Note 7 — Capital Stock

Issuance of Common Stock

On March 21, 2023, the Company entered into common stock purchase agreements with certain investors for the sale of an aggregate of 450 thousand shares of common stock in registered direct offerings pursuant to our effective shelf registration statement on Form S-3 (File No. 333-266942), resulting in net cash proceeds of approximately $2.3 million. Issuance costs related to the registered direct offering were insignificant. The purchase price for each share of common stock was $5.14.

On August 17, 2022, the Company filed a Registration Statement on Form S-3 (File No. 333-266942) with the SEC, under which we may sell, from time-to-time common stock, preferred stock, depositary shares, warrants, debt securities, and units, individually or as units comprised of one or more of the other securities or a combination thereof. The Company's registration statement became effective on August 26, 2022.