STOCK-BASED COMPENSATION (Stock Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Stock Options (Number of shares)
Outstanding, beginning balance (in shares)	1,677,741
Granted (in shares)	228,700
Exercised (in shares)	(287,511)
Forfeited (in shares)	(129,840)
Expired (in shares)	(2,700)
Outstanding, ending balance (in shares)	1,486,390
Vested and expected to vest (in shares)	1,419,359	237,355	194,455
Exercisable (in shares)	867,115
Stock Options (Weighted-average exercise price)
Weighted- average exercise price per share beginning balance (in dollars per share)	$ 35.37
Granted (in dollars per share)	$ 68.73
Exercised (in dollars per share)	$ 31.53
Forfeited (in dollars per share)	$ 49.50
Expired (in dollars per share)	$ 47.85
Weighted- average exercise price per share ending balance (in dollars per share)	$ 39.99
Weighted- average exercise price per share, Vested and Expected to Vest (in dollars per share)	$ 39.20	$ 31.40	$ 27.90
Weighted- average exercise price per share, Exercisable (in dollars per share)	$ 28.58
Weighted-average remaining contractual terms (years), Outstanding	6 years 3 months 26 days
Weighted-average remaining contractual terms (years), Vested and Expected to Vest	6 years 4 months 2 days
Weighted-average remaining contractual terms (years), Exercisable	5 years 0 months 26 days
Aggregate intrinsic value, Outstanding	$ 68,389
Aggregate intrinsic value, Vested and Expected to Vest	66,433
Aggregate intrinsic value, Exercisable	$ 49,786