STOCKHOLDERS' EQUITY - Activity Under the Employee Option Plans (Details) - Employee Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance	399,500	488,200	533,000
Exercised	(51,800)	(88,700)	(44,800)
Ending balance	347,700	399,500	488,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, weighted average exercise price	$ 46.96	$ 48.68	$ 49.00
Exercised, weighted average exercise price	29.64	56.43	52.55
Ending balance, weighted average exercise price	$ 49.54	$ 46.96	$ 48.68
Options exercisable at year end	347,700	399,500	468,400
Options exercisable at year end, weighted average exercise price	$ 49.54	$ 46.96	$ 48.00