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Note 9 - Stock Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Non-vested stock units as of December 26, 2020 |  |  | 244,076 |  |  | $ | 8.98 |
Granted |  |  | 50,615 |  |  |  | 20.74 |
Vested |  |  | (84,887 | ) |  |  | 8.98 |
Forfeited |  |  | (55,684 | ) |  |  | 7.99 |
Non-vested stock units as of December 25, 2021 |  |  | 154,120 |  |  | $ | 13.19 |
Granted |  |  | 216,254 |  |  |  | 14.15 |
Vested |  |  | (97,189 | ) |  |  | 12.16 |
Forfeited |  |  | (21,156 | ) |  |  | 14.10 |
Non-vested stock units as of December 31, 2022 |  |  | 252,029 |  |  | $ | 14.33 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Incentive Stock Options |  |  | Director Stock Options |
|  | Granted |  |  | Outstanding |  |  | Granted |  |  | Outstanding |
2022 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
2021 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
2020 |  |  | - |  |  |  | 10,000 |  |  |  | - |  |  |  | - |
|  | 2022 |  |  | 2021 |  |  | 2020 |
|  | Shares |  |  | Option Price |  |  | Shares |  |  | Option Price |  |  | Shares |  |  | Option Price |
Outstanding at beginning of year |  |  | - |  |  |  | - |  |  |  | 10,000 |  |  | $ | 14.39 |  |  |  | 20,000 |  |  | $ | 14.39 |
Issued during year |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Canceled or expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Exercised during year |  |  | - |  |  |  | - |  |  |  | (10,000 | ) |  | $ | 14.39 |  |  |  | (10,000 | ) |  | $ | 14.39 |
Outstanding at end of year |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 10,000 |  |  | $ | 14.39 |
Exercisable at end of year |  |  | - |  |  |  |  |  |  |  | - |  |  |  |  |  |  |  | 10,000 |  |  |  |  |
Weighted-average fair value of options granted during the year |  |  | - |  |  |  |  |  |  |  | - |  |  |  |  |  |  |  | - |  |  |  |  |

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