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Note 3 - Net Loss Per Share | 6 Months Ended
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Jul. 02, 2023
Notes to Financial Statements |
Earnings Per Share [Text Block] | Note 3 — Net Loss Per Share Basic loss per share is computed by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per share was computed using the weighted average number of common shares outstanding during the period plus potentially dilutive common shares outstanding during the period under the treasury stock method. In computing diluted net loss per share, the weighted average stock price for the period is used in determining the number of shares assumed to be purchased from the exercise of stock options and warrants. For the three and six months ended July 2, 2023 and July 3, 2022, 739 thousand and 536 thousand shares of common stock, respectively, associated with equity awards and the estimated number of shares to be purchased under the current offering period of the 2009 Employee Stock Purchase Plan were outstanding. These shares were not included in the computation of diluted net loss per share, as they were considered anti-dilutive due to the net losses the Company experienced during these periods. Warrants to purchase up to 386 thousand shares were issued in connection with the May 29, 2018, stock offering were not included in the diluted loss per share calculation of the periods presented as they were also considered anti-dilutive due to the net loss the Company experienced during these periods. The warrants were exercisable through May 29, 2023 at a price of $19.32 per share. The warrants expired unexercised on May 29, 2023.

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