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Note 5 - Share-based Compensation Plans (Tables) | 12 Months Ended
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Dec. 25, 2021
Notes Tables |
Share-based Payment Arrangement, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Average |  |  | Remaining |  |  | Aggregate |
|  |  |  |  |  | Exercise |  |  | Contractual |  |  | Intrinsic |
|  | Shares |  |  | Price |  |  | Life (years) |  |  | Value |
Outstanding at beginning of year |  |  | 1,251,500 |  |  | $ | 1.82 |  |  |  |  |  |  |  |  |
Granted |  |  | 258,000 |  |  | $ | 3.39 |  |  |  |  |  |  |  |  |
Exercised |  |  | (630,400 | ) |  | $ | 1.97 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (36,700 | ) |  | $ | 1.69 |  |  |  |  |  |  |  |  |
Expired |  |  | (3,000 | ) |  | $ | 1.49 |  |  |  |  |  |  |  |  |
Outstanding at end of year |  |  | 839,400 |  |  | $ | 2.20 |  |  |  | 6.16 |  |  | $ | 1,874,111 |
Options exercisable at year-end |  |  | 468,900 |  |  | $ | 1.90 |  |  |  | 4.43 |  |  | $ | 1,163,055 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2021 |  |  | 2020 |
Risk-free interest rate |  |  | .50% | - | 1.34 | % |  |  | .84% | - | .91 | %
Expected life in years |  |  | 6 | - | 7 |  |  |  | 6 | - | 7 |
Expected volatility |  |  | 54 | % |  |  | 54 | %
Expected dividend yield |  |  | 0 |  |  |  | 0 |
Weighted average fair value of grants |  | $ | 1.72 |  |  | $ | .78 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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