STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 26, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of assumptions used in estimating fair value of each option grant

	2015		2014		2013
Expected volatility	34.13	%	32.27	%	33.26	%
Risk-free interest rate	1.58	%	1.43	%	1.16	%
Expected life from vesting date	3.0 yrs		3.0 yrs		3.0 yrs
Dividend yield	0.94	%	0.75	%	0.72	%

Summary of activity of stock plans

Following is a summary of the activity of the stock plans during 2013, 2014 and 2015:

	Number of Shares		Weighted Average Exercise Price			Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 29, 2012	868,992		$	84.91
Granted	155,254		144.86
Exercised	(216,105	)	(72.17		)
Forfeited	(12,920	)	(129.08		)
Outstanding at December 28, 2013	795,221		$	99.29		4.56	$	39,994
Options vested or expected to vest at December 28, 2013	775,237		$	98.41		4.51	39,678
Options exercisable at December 28, 2013	464,377		$	81.73		3.58	31,508

The weighted average per share fair value of options granted during 2013, was $37.88.

(11) STOCK-BASED COMPENSATION (Continued)

	Number of Shares		Weighted Average Exercise Price			Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 28, 2013	795,221		$	99.29
Granted	177,717		132.94
Exercised	(194,627	)	(71.67		)
Forfeited	(9,716	)	(126.23		)
Outstanding at December 27, 2014	768,595		$	113.72		4.74	$	15,983
Options vested or expected to vest at December 27, 2014	746,974		$	113.06		4.69	15,981
Options exercisable at December 27, 2014	450,539		$	97.29		3.59	15,944

The weighted average per share fair value of options granted during 2014 was $33.94.

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 27, 2014	768,595		$	113.72
Granted	291,708		104.89
Exercised	(169,493	)	74.37
Forfeited	(41,201	)	137.02
Outstanding at December 26, 2015	849,609		$	117.42	5.18	$	4,536
Options vested or expected to vest at December 26, 2015	818,300		$	117.61	5.13	4,456
Options exercisable at December 26, 2015	409,068		$	119.43	3.74	3,376

The weighted average per share fair value of options granted during 2015 was $27.91.

Summary of status of stock options outstanding

Following is a summary of the status of stock options outstanding at December 26, 2015:

Outstanding and Exercisable By Price Range
Options Outstanding					Options Exercisable
Exercise Price Range	Number	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Number	Weighted Average Exercise Price
$60.97 - 85.32	136,288	2.08 years	$	83.78	136,103	$	83.78
$104.47 - 110.33	297,221	6.78 years	104.68		12,181	109.50
$120.91 - 151.45	416,100	5.05 years	137.55		260,784	138.51
	849,609				409,068

Schedule of non-vested stock and restricted stock units

	2015		2014		2013
Shares issued	47,038		35,885		47,271
Weighted‑average per share price on grant date	$	108.97	$	136.91	$	146.72
Compensation expense	$	4,511	$	3,978	$	3,667