Shareholders' Equity (Deficit): (Tables)

3 Months Ended

Mar. 27, 2021

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 26, 2020	393,488	$	113.19	5.61	$	27,864,900
Granted	10,000		182.21
Exercised	(2,950)		91.10
Outstanding, March 27, 2021	400,538	$	115.08	5.47	$	28,425,900
Exercisable, March 27, 2021	278,583	$	94.89	4.14	$	25,395,100

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

	Three Months Ended
	March 27, 2021
Risk free interest rate		0.64	%
Expected life (years)		6
Expected volatility		25.05	%
Dividend yield		2.77	%
Option fair value	$	30.02