Note 5 - Share-based Payments	3 Months Ended
Apr. 01, 2023
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	(5) Share-Based Payments The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant date fair value of the award. That cost is recognized over the period during which an employee is required to provide services in exchange for the award, the requisite service period (usually the vesting period). The Company provides an estimate of forfeitures at initial grant date. Reductions in compensation expense associated with the forfeited options are estimated at the date of grant, and this estimated forfeiture rate is adjusted periodically based on actual forfeiture experience. The company uses the Black-Scholes option pricing model to determine the fair value of the stock options granted. During the quarters ended April 1, 2023 and April 2, 2022, a total of 0 and 170,000 stock options, respectively, were granted to employees under the Company’s 2020 Equity Incentive Plan (the “Plan”) and a total of 50,000 and 38,000 stock options, respectively, were granted to outside directors during the quarters ended April 1, 2023 and April 2, 2022. During the quarter ended April 1, 2023, there were 7,001 options exercised and corresponding shares issued at a weighted average price of $1.47. During the quarter ended April 2, 2022, there were 72,700 options exercised and corresponding shares issued at a weighted average price of $2.08. During the quarter ended April 1, 2023, the Company repurchased 285 shares for employees to facilitate their exercise of stock options. During the quarter ended April 2, 2022, the Company repurchased 840 shares for employees to facilitate their exercise of stock options. There were also 1,004,400 options outstanding at a weighted average price of $2.51 with a weighted average remaining term of 6.10 years as of April 1, 2023, and there were 971,600 options outstanding at a weighted average price of $2.37 with a weighted average remaining term of 6.67 years as of April 2, 2022. The Plan, as amended, is authorized to issue 1,500,000 shares of common stock. As of April 1, 2023, there were 865,800 shares available for future grants. 639,100 grants remain exercisable under the Company’s Equity Incentive Plans. As of April 1, 2023, there was $523 thousand of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan; that cost is expected to be recognized over a weighted average period of 1.41 years. During the quarters ended April 1, 2023 and April 2, 2022, the Company recognized approximately $130 thousand and $124 thousand, respectively, as shared-based compensation expense related to previously granted shares under the Plan.

Note 5 - Share-based Payments

3 Months Ended

Apr. 01, 2023

Share-Based Payment Arrangement [Text Block]

(5) Share-Based Payments

The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant date fair value of the award. That cost is recognized over the period during which an employee is required to provide services in exchange for the award, the requisite service period (usually the vesting period). The Company provides an estimate of forfeitures at initial grant date. Reductions in compensation expense associated with the forfeited options are estimated at the date of grant, and this estimated forfeiture rate is adjusted periodically based on actual forfeiture experience. The company uses the Black-Scholes option pricing model to determine the fair value of the stock options granted.

During the quarters ended April 1, 2023 and April 2, 2022, a total of 0 and 170,000 stock options, respectively, were granted to employees under the Company’s 2020 Equity Incentive Plan (the “Plan”) and a total of 50,000 and 38,000 stock options, respectively, were granted to outside directors during the quarters ended April 1, 2023 and April 2, 2022.

During the quarter ended April 1, 2023, there were 7,001 options exercised and corresponding shares issued at a weighted average price of $1.47. During the quarter ended April 2, 2022, there were 72,700 options exercised and corresponding shares issued at a weighted average price of $2.08.

During the quarter ended April 1, 2023, the Company repurchased 285 shares for employees to facilitate their exercise of stock options. During the quarter ended April 2, 2022, the Company repurchased 840 shares for employees to facilitate their exercise of stock options.

There were also 1,004,400 options outstanding at a weighted average price of $2.51 with a weighted average remaining term of 6.10 years as of April 1, 2023, and there were 971,600 options outstanding at a weighted average price of $2.37 with a weighted average remaining term of 6.67 years as of April 2, 2022. The Plan, as amended, is authorized to issue 1,500,000 shares of common stock. As of April 1, 2023, there were 865,800 shares available for future grants. 639,100 grants remain exercisable under the Company’s Equity Incentive Plans.

As of April 1, 2023, there was $523 thousand of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Plan; that cost is expected to be recognized over a weighted average period of 1.41 years.

During the quarters ended April 1, 2023 and April 2, 2022, the Company recognized approximately $130 thousand and $124 thousand, respectively, as shared-based compensation expense related to previously granted shares under the Plan.