STOCKHOLDERS' EQUITY - Activity during the period (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at beginning of period	$ 429,931
Net income	1,359	$ 11,636
Balance at end of period	436,317	267,541
Capital in Excess of Par Value
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at beginning of period	251,816	224,677
Share-based compensation	6,199	7,910
Balance at end of period	258,015	232,587
Retained Earnings
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at beginning of period	1,306,096	1,155,838
Net income	1,359	11,636
Exercise of stock options	(1,103)	(223)
Restricted shares issued, net of cancellations and shares withheld for taxes	(11,034)	(1,692)
Balance at end of period	1,295,318	1,165,559
Treasury Shares
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at beginning of period	(1,276,258)	(1,281,690)
Exercise of stock options	1,913	288
Restricted shares issued, net of cancellations and shares withheld for taxes	6,288	1,371
Balance at end of period	$ (1,268,057)	$ (1,280,031)