STOCKHOLDERS' EQUITY - Activity during the period (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at the beginning of the period			$ 245,221
Net income (loss)	$ 29,626	$ 2,303	68,035	$ (44,377)
Balance at the end of the period	345,131	173,416	345,131	173,416
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 the beginning of the period			224,677	199,100
Share-based compensation			22,228	19,440
Balance at the end of the period	246,905	218,540	246,905	218,540
Retained Earnings
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at the beginning of the period			1,155,838	1,145,643
Net income (loss)			68,035	(44,377)
Exercise of stock options			(263)	(1,919)
Restricted shares issued, net of cancellations and shares withheld for taxes			(2,543)	(2,451)
Balance at the end of the period	1,221,067	1,096,896	1,221,067	1,096,896
Treasury Shares
Activity in the Capital in excess of par value, Retained earnings and Common stock in treasury, at cost
Balance at the beginning of the period			(1,281,690)	(1,291,583)
Exercise of stock options			2,628	4,347
Restricted shares issued, net of cancellations and shares withheld for taxes			1,947	1,553
Balance at the end of the period	$ (1,277,115)	$ (1,285,683)	$ (1,277,115)	$ (1,285,683)