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Shareholders' Equity (Deficit): (Tables)
9 Months Ended
Sep. 24, 2022
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 25, 2021

 

355,621

$

146.03

6.32

$

39,320,600

Granted

 

34,940

198.42

Exercised

 

(26,333)

111.54

Forfeited

 

(6,501)

183.28

Outstanding, September 24, 2022

 

357,727

$

153.00

6.06

$

24,816,800

Exercisable, September 24, 2022

 

216,443

$

119.96

4.37

$

21,258,300

Schedule of weighted average assumptions used in estimation of fair value of options granted

Nine Months Ended

    

September 24, 2022

September 25, 2021

    

Risk free interest rate

 

2.70

%

0.90

%

 

Expected life (years)

 

6

6

 

Expected volatility

 

27.47

%

25.07

%

 

Dividend yield

 

4.61

%

2.74

%

 

Option fair value

$

33.38

$

32.70