SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 26, 2020	Mar. 28, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Segment Reporting Information [Line Items]
Goodwill impairment	$ 0			$ 17,742	$ 0
Net sales	865,080		$ 943,322	2,034,437	2,418,764
Operating Income (Loss)	$ 113,527		$ 83,870	$ 56,003	$ 209,105
Operating income (loss) as percentage of segment net sales	13.10%		8.90%	2.80%	8.60%
Intangible asset impairment	$ 0		$ 30,800	$ 26,500	$ 30,800
Wholesale
Segment Reporting Information [Line Items]
Goodwill impairment	0			0
Net sales	302,135		352,256	706,009	856,713
Retail
Segment Reporting Information [Line Items]
Goodwill impairment	0			0
Net sales	449,150		464,100	1,085,883	1,264,283
International
Segment Reporting Information [Line Items]
Goodwill impairment	0	$ 17,700	0	17,742	0
Net sales	113,795		126,966	242,545	297,768
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	$ 865,080		$ 943,322	$ 2,034,437	$ 2,418,764
Percentage of total net sales	100.00%		100.00%	100.00%	100.00%
Operating Segments [Member] | Wholesale
Segment Reporting Information [Line Items]
Restructuring Charges	$ 200			$ 1,500
Operating Costs and Expenses	1,600		$ 19,100	18,400	$ 19,100
Net sales	$ 302,135		$ 352,256	$ 706,009	$ 856,713
Percentage of total net sales	34.90%		37.30%	34.70%	35.40%
Operating Income (Loss)	$ 65,718		$ 54,391	$ 89,141	$ 145,181
Operating income (loss) as percentage of segment net sales	21.80%		15.40%	12.60%	16.90%
Intangible asset impairment			$ 19,100		$ 19,100
Operating Segments [Member] | Retail
Segment Reporting Information [Line Items]
Restructuring Charges	$ 300			$ 3,400
Operating Costs and Expenses	3,400		1,200	32,100	500
Net sales	$ 449,150		$ 464,100	$ 1,085,883	$ 1,264,283
Percentage of total net sales	51.90%		49.20%	53.40%	52.30%
Operating Income (Loss)	$ 47,559		$ 49,472	$ 38,902	$ 124,567
Operating income (loss) as percentage of segment net sales	10.60%		10.70%	3.60%	9.90%
Intangible asset impairment			$ 1,200		$ 1,200
Operating Segments [Member] | International
Segment Reporting Information [Line Items]
Restructuring Charges	$ 300			$ 1,900
Operating Costs and Expenses	600		10,500	25,800	8,400
Net sales	$ 113,795		$ 126,966	$ 242,545	$ 297,768
Percentage of total net sales	13.20%		13.50%	11.90%	12.30%
Operating Income (Loss)	$ 17,400		$ 6,136	$ (15,819)	$ 15,351
Operating income (loss) as percentage of segment net sales	15.30%		4.80%	(6.50%)	5.20%
Intangible asset impairment			$ 10,500		$ 10,500
Corporate [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	$ 400			$ 2,000	1,600
Corporate expenses	(17,150)		(26,129)	(56,221)	$ (75,994)
Skip Hop Trade Name [Member]
Segment Reporting Information [Line Items]
Intangible asset impairment		11,000
Skip Hop Trade Name [Member] | Wholesale
Segment Reporting Information [Line Items]
Intangible asset impairment	0			6,800
Skip Hop Trade Name [Member] | Retail
Segment Reporting Information [Line Items]
Intangible asset impairment	0			500
Skip Hop Trade Name [Member] | International
Segment Reporting Information [Line Items]
Intangible asset impairment	$ 0			$ 3,700
Skip Hop Trade Name [Member] | Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Intangible asset impairment		6,800	19,100
Skip Hop Trade Name [Member] | International Segment [Member]
Segment Reporting Information [Line Items]
Intangible asset impairment		3,700	10,500
Skip Hop Trade Name [Member] | Retail Segment [Member]
Segment Reporting Information [Line Items]
Intangible asset impairment		$ 500	$ 1,200