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Note 9 - Per Share Data - Unissued Shares of Common Stock Were Reserved for the Following Purposes (Details) - shares | Mar. 30, 2024 | Dec. 30, 2023
--- | --- | ---
Future grants of options or shares (in shares) | 296,040 | 603,044
Shares reserved for employee stock purchase plan (in shares) | 274,941 | 297,730
Total (in shares) | 1,199,899 | 1,377,392
Time-based Restricted Stock Units [Member] |  |
Restricted stock units outstanding (in shares) | 328,918 | 376,618
Performance-based Restricted Stock Units [Member] |  |
Restricted stock units outstanding (in shares) | 300,000 | 100,000

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