STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Stock Based Compensation
Shares of common stock available for issuance	706,000
Number of Shares
Exercised (in shares)	(109,893)	(169,493)	(194,627)
Stock option plans
Stock Based Compensation
Compensation expense (included in selling, general and administrative expenses)	$ 5,782	$ 5,137	$ 4,461
Tax benefits associated with compensation expense	$ 2,197	$ 1,952	$ 1,695
Weighted average period over which unrecognized stock option compensation cost would be recognized	2 years 1 month 25 days
Unrecognized stock option compensation expense	$ 9,872
Assumptions used in estimating fair value of each option grant
Expected volatility (as a percent)	33.88%	34.13%	32.27%
Risk-free interest rate (as a percent)	1.83%	1.58%	1.43%
Expected life from vesting date	3 years	3 years	3 years
Dividend yield (as a percent)	1.13%	0.94%	0.75%
Number of Shares
Balance at the beginning of the period (in shares)	849,609	768,595	795,221
Granted (in shares)	85,092	291,708	177,717
Exercised (in shares)	(109,893)	(169,493)	(194,627)
Forfeited (in shares)	(31,635)	(41,201)	(9,716)
Balance at the end of the period (in shares)	793,173	849,609	768,595
Options vested or expected to vest (in shares)	774,139	818,300	746,974
Options exercisable (in shares)	469,844	409,068	450,539
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 117,420	$ 113,720	$ 99,290
Granted (in dollars per share)	151,370	104,890	132,940
Exercised (in dollars per share)	(101,690)	(74,370)	(71,670)
Forfeited (in dollars per share)	(129,360)	(137,020)	(126,230)
Balance at the end of the period (in dollars per share)	122,770	117,420	113,720
Options vested or expected to vest (in dollars per share)	124,180	117,610	113,060
Options exercisable (in dollars per share)	$ 123,750	$ 119,430	$ 97,290
Weighted Average Remaining Contractual Term
Options outstanding	4 years 9 months 11 days	5 years 2 months 4 days	4 years 8 months 26 days
Options vested or expected to vest	4 years 8 months 31 days	5 years 1 month 16 days	4 years 8 months 8 days
Options exercisable	3 years 11 months 15 days	3 years 8 months 26 days	3 years 7 months 2 days
Aggregate Intrinsic Value
Options outstanding	$ 16,640	$ 4,536	$ 15,983
Options vested or expected to vest	16,200	4,456	15,981
Options exercisable	$ 9,056	$ 3,376	$ 15,944
Other option disclosures
Weighted average per share fair value of option granted	$ 40.00	$ 27.91	$ 33.94
Stock option plans | Maximum
Stock Based Compensation
Vesting period of options	6 years
Expiration period of grant	10 years
Stock option plans | Minimum
Stock Based Compensation
Vesting period of options	3 years
Expiration period of grant	6 years