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Earnings Per Share: (Details) - shares
3 Months Ended
Mar. 30, 2024
Apr. 01, 2023
Earnings Per Share:    
Denominator for basic EPS - weighted average common shares 3,497,261 3,460,720
Dilutive shares associated with option plans 164,106 133,514
Denominator for diluted EPS - weighted average common shares and dilutive potential common shares 3,661,367 3,594,234
Options excluded from EPS calculation - anti-dilutive (in shares) 1,667 2,901