Shareholders' Equity (Deficit): (Tables)

6 Months Ended

Jun. 29, 2019

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 29, 2018	639,380	$	84.12	5.61	$	47,808,100
Granted	29,250		164.84
Exercised	(23,653)		39.97
Outstanding, June 29, 2019	644,977	$	89.40	5.44	$	54,018,600
Exercisable, June 29, 2019	482,452	$	72.55	4.38	$	48,533,600

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

	Six Months Ended
	June 29, 2019			June 30, 2018
Risk free interest rate		1.98	%		2.73	%
Expected life (years)		6			6
Expected volatility		20.30	%		20.40	%
Dividend yield		1.26	%		1.17	%
Option fair value	$	32.65		$	31.44