Note 9 - Per Share Data - Unissued Shares of Common Stock Were Reserved for the Following Purposes (Details) - shares |
Apr. 04, 2026 |
Jan. 03, 2026 |
|---|---|---|
| Future grants of options or shares (in shares) | 1,252,652 | 365,680 |
| Shares reserved for employee stock purchase plan (in shares) | 198,304 | 233,927 |
| Total (in shares) | 1,904,449 | 1,002,627 |
| Time-based Restricted Stock Units [Member] | ||
| Restricted stock units outstanding (in shares) | 172,136 | 215,520 |
| Performance-based Restricted Stock Units [Member] | ||
| Restricted stock units outstanding (in shares) | 281,407 | 187,500 |