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Shareholders' Equity (Deficit): (Tables)

6 Months Ended

Jul. 01, 2017

Shareholders' Equity (Deficit):

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

		Six Months Ended
		July 1, 2017			June 25, 2016
Risk free interest rate			1.90	%		1.52	%
Expected life (years)			6			6
Expected volatility			26.93	%		27.10	%
Dividend yield			1.14	%		1.38	%
Option fair value		$	31.38		$	23.78

Schedule of options outstanding and options exercisable

							Weighted Average
							Remaining
		Number of		Weighted Average			Contractual Life
		Shares		Exercise Price			(years)			Intrinsic Value
Outstanding, December 31, 2016		673,670		$	62.11		6.11		$	43,139,100
Granted		36,000			122.19
Exercised		(52,686)			29.75
Forfeited		(4,750)			95.28
Outstanding, July 1, 2017		652,234		$	67.80		6.05		$	39,882,600
Exercisable, July 1, 2017		462,953		$	54.26		5.04		$	34,577,700

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- References

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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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