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Shareholders' Equity (Deficit): (Tables) | 9 Months Ended
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Sep. 28, 2024
Shareholders' Equity (Deficit): |
Schedule of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | Weighted Average |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​
​ | ​ | Number of | ​ | Weighted Average | ​ | Contractual Life | ​ | ​ | ​
​ |  | Shares |  | Exercise Price |  | (years) |  |  | Intrinsic Value
Outstanding, December 30, 2023 |  | 341,892 | ​ | $ | 180.73 | ​ | 5.98 | ​ | $ | 81,017,600
Granted |  | 13,100 | ​ | ​ | 355.90 | ​ | ​ | ​ | ​ | ​
Exercised |  | (23,425) | ​ | ​ | 115.90 | ​ | ​ | ​ | ​ | ​
Forfeited |  | (4,581) | ​ | ​ | 239.61 | ​ | ​ | ​ | ​ | ​
Outstanding, September 28, 2024 |  | 326,986 | ​ | $ | 191.57 | ​ | 5.59 | ​ | $ | 63,343,700
Exercisable, September 28, 2024 |  | 232,536 | ​ | $ | 163.39 | ​ | 4.63 | ​ | $ | 51,532,000
Schedule of weighted average assumptions used in estimation of fair value of options granted | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended | ​ | Nine Months Ended | ​ | ​
​ |  | September 28, 2024 | ​ | September 30, 2023 | ​ |
Risk free interest rate |  | ​ | 4.57 | % | ​ | 3.86 | % |
Expected life (years) |  | ​ | 6 | ​ | ​ | 6 | ​ |
Expected volatility |  | ​ | 29.33 | % | ​ | 28.04 | % |
Dividend yield |  | ​ | 2.93 | % | ​ | 3.00 | % |
Option fair value | ​ | $ | 93.88 | ​ | $ | 76.01 | ​ | ​

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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 -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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