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Significant Accounting Policies: (Tables) | 12 Months Ended
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Dec. 31, 2022
Significant Accounting Policies: |
Schedule of shares outstanding used in the calculation of basic and diluted earnings per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended |
​ |  | December 31, 2022 |  | December 25, 2021 |  | December 26, 2020 |
Denominator for basic EPS — weighted average common shares |  | 3,487,732 |  | 3,671,980 |  | 3,719,485 | ​
Dilutive shares associated with option plans |  | 104,724 |  | 138,500 |  | 143,779 | ​
Denominator for diluted EPS — weighted average common shares and dilutive potential common shares |  | 3,592,456 |  | 3,810,480 |  | 3,863,264 | ​
Options excluded from EPS calculation — anti-dilutive |  | 21,153 |  | 20,294 |  | 14,822 | ​
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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