STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Stock Based Compensation
Shares of common stock available for issuance	529,000
Number of Shares
Exercised (in shares)	(284,574)	(109,893)	(169,493)
Stock option plans
Stock Based Compensation
Compensation expense (included in selling, general and administrative expenses)	$ 5,137	$ 5,782	$ 5,137
Tax benefits associated with compensation expense	$ 1,952	$ 2,197	$ 1,952
Weighted average period over which unrecognized stock option compensation cost would be recognized	2 years 11 days
Unrecognized stock option compensation expense	$ 7,588
Assumptions used in estimating fair value of each option grant
Expected volatility (as a percent)	33.76%	33.88%	34.13%
Risk-free interest rate (as a percent)	2.12%	1.83%	1.58%
Expected life from vesting date	3 years	3 years	3 years
Dividend yield (as a percent)	1.17%	1.13%	0.94%
Number of Shares
Balance at the beginning of the period (in shares)	793,173	849,609	768,595
Granted (in shares)	67,965	85,092	291,708
Exercised (in shares)	(284,574)	(109,893)	(169,493)
Forfeited (in shares)	(5,942)	(31,635)	(41,201)
Balance at the end of the period (in shares)	570,622	793,173	849,609
Options vested or expected to vest (in shares)	558,114	774,139	818,300
Options exercisable (in shares)	351,794	469,844	409,068
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 122,770	$ 117,420	$ 113,720
Granted (in dollars per share)	164,350	151,370	104,890
Exercised (in dollars per share)	(121,920)	(101,690)	74,370
Forfeited (in dollars per share)	(104,260)	(129,360)	137,020
Balance at the end of the period (in dollars per share)	128,340	122,770	117,420
Options vested or expected to vest (in dollars per share)	128,000	124,180	117,610
Options exercisable (in dollars per share)	$ 123,900	$ 123,750	$ 119,430
Weighted Average Remaining Contractual Term
Options outstanding	4 years 7 months 28 days	4 years 9 months 12 days	5 years 2 months 4 days
Options vested or expected to vest	4 years 7 months 16 days	4 years 9 months 1 day	5 years 1 month 16 days
Options exercisable	3 years 11 months 8 days	3 years 11 months 16 days	3 years 8 months 26 days
Aggregate Intrinsic Value
Options outstanding	$ 21,806	$ 16,640	$ 4,536
Options vested or expected to vest	21,517	16,200	4,456
Options exercisable	$ 15,005	$ 9,056	$ 3,376
Other option disclosures
Weighted average per share fair value of option granted	$ 43.68	$ 40.00	$ 27.91
Stock option plans | Minimum
Stock Based Compensation
Vesting period of options	3 years