SEGMENT REPORTING - Sales and EBITDA (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016 USD ($)	Jul. 04, 2015 USD ($)	Jul. 02, 2016 USD ($) segment	Jul. 04, 2015 USD ($)
SEGMENT REPORTING
Number of reportable segments | segment			3
Net Sales	$ 319,691	$ 281,118	$ 594,113	$ 536,434
% to Total	100.00%	100.00%	100.00%	100.00%
Adjusted EBITDA	$ 52,368	$ 41,137	$ 87,677	$ 65,876
North America
SEGMENT REPORTING
Number of Operating Segments | segment			1
International - Japan, Asia and Europe
SEGMENT REPORTING
Number of Operating Segments | segment			3
KATE SPADE North America
SEGMENT REPORTING
Net Sales	$ 271,378	$ 235,730	$ 490,055	$ 431,316
% to Total	84.90%	83.90%	82.50%	80.40%
Adjusted EBITDA	$ 47,393	$ 37,781	$ 71,980	$ 55,853
% of Sales	17.50%	16.00%	14.70%	12.90%
KATE SPADE International
SEGMENT REPORTING
Net Sales	$ 43,417	$ 40,718	$ 92,300	$ 93,186
% to Total	13.60%	14.40%	15.50%	17.40%
Adjusted EBITDA	$ 4,053	$ 3,433	$ 12,590	$ 8,422
% of Sales	9.30%	8.40%	13.60%	9.00%
Adelington Design Group
SEGMENT REPORTING
Net Sales	$ 4,896	$ 4,670	$ 11,758	$ 11,932
% to Total	1.50%	1.70%	2.00%	2.20%
Adjusted EBITDA	$ 922	$ (77)	$ 3,107	$ 1,601
% of Sales	18.80%	(1.60%)	26.40%	13.40%