Note 7 - Employee Stock Plans	6 Months Ended
Jul. 04, 2021
Notes to Financial Statements
Disclosure of Employee Stock Ownership Plans [Text Block]	Note 7 — Employee Stock Plans 2019 Stock Plan On April 24, 2019, the Company’s Board of Directors and shareholders approved the 2019 Stock Plan (“2019 Plan”) to replace the 2009 Stock Plan. Under the 2019 Plan, 357,143 shares of common stock were made available for grants, plus any shares subject to any outstanding options or other awards granted under the Company’s 2009 Stock Plan that expire, including the 299,070 shares then available, or which are forfeited, cancelled, returned to the Company for failure to satisfy vesting requirements, settled for cash or otherwise terminated without payment being made thereunder. The 2019 Plan was amended and restated by the Board of Directors on March 5,2020 and approved by the Company’s stockholders on April 22, 2020 to, among other things, reserve an additional 550,000 shares of common stock for issuance under the 2019 Plan. The 2019 Plan was amended and restated by the Board of Directors on March 3, 2021 and approved by the Company’s stockholders on May 12, 2021 to, among other things, reserve an additional 600,000 shares of common stock for issuance under the 2019 Plan. As of July 4, 2021, approximately 1,158,052 shares of the Company’s common stock were available for issuance under the 2019 Plan. 2009 Employee Stock Purchase Plan The 2009 Employee Stock Purchase Plan (“2009 ESPP”) was adopted in March 2009 and amended by the Board of Directors in January 2015 and in February 2017, and approved by the Company's stockholders on April 23, 2015 and April 26, 2017, to reserve an additional 71,429 and 107,143 shares of common stock, respectively, for issuance under the 2009 ESPP. The 2009 ESPP was amended and restated by the Board of Directors on March 5, 2020 and approved by the Company’s stockholders on April 22, 2020. The amendment, among other things, extend the term of the plan until March 5, 2029 and reserved an additional 300,000 shares of common stock for issuance under the 2009 ESPP. As of July 4, 2021, approximately 281,859 shares of the Company’s common stock were reserved for issuance under the 2009 ESPP.

Note 7 - Employee Stock Plans

6 Months Ended

Jul. 04, 2021

Disclosure of Employee Stock Ownership Plans [Text Block]

Note 7 — Employee Stock Plans

2019 Stock Plan

On April 24, 2019, the Company’s Board of Directors and shareholders approved the 2019 Stock Plan (“2019 Plan”) to replace the 2009 Stock Plan. Under the 2019 Plan, 357,143 shares of common stock were made available for grants, plus any shares subject to any outstanding options or other awards granted under the Company’s 2009 Stock Plan that expire, including the 299,070 shares then available, or which are forfeited, cancelled, returned to the Company for failure to satisfy vesting requirements, settled for cash or otherwise terminated without payment being made thereunder.

The 2019 Plan was amended and restated by the Board of Directors on March 5,2020 and approved by the Company’s stockholders on April 22, 2020 to, among other things, reserve an additional 550,000 shares of common stock for issuance under the 2019 Plan. The 2019 Plan was amended and restated by the Board of Directors on March 3, 2021 and approved by the Company’s stockholders on May 12, 2021 to, among other things, reserve an additional 600,000 shares of common stock for issuance under the 2019 Plan. As of July 4, 2021, approximately 1,158,052 shares of the Company’s common stock were available for issuance under the 2019 Plan.

2009 Employee Stock Purchase Plan

The 2009 Employee Stock Purchase Plan (“2009 ESPP”) was adopted in March 2009 and amended by the Board of Directors in January 2015 and in February 2017, and approved by the Company's stockholders on April 23, 2015 and April 26, 2017, to reserve an additional 71,429 and 107,143 shares of common stock, respectively, for issuance under the 2009 ESPP.

The 2009 ESPP was amended and restated by the Board of Directors on March 5, 2020 and approved by the Company’s stockholders on April 22, 2020. The amendment, among other things, extend the term of the plan until March 5, 2029 and reserved an additional 300,000 shares of common stock for issuance under the 2009 ESPP. As of July 4, 2021, approximately 281,859 shares of the Company’s common stock were reserved for issuance under the 2009 ESPP.