SEGMENT REPORTING - Sales and EBITDA (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016 USD ($)	Oct. 03, 2015 USD ($)	Oct. 01, 2016 USD ($) segment	Oct. 03, 2015 USD ($)
SEGMENT REPORTING
Number of reportable segments | segment			3
Net Sales	$ 316,528	$ 277,328	$ 910,641	$ 813,762
% to Total	100.00%	100.00%	100.00%	100.00%
Adjusted EBITDA	$ 53,334	$ 36,633	$ 141,011	$ 102,509
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	$ 259,734	$ 228,493	$ 749,789	$ 659,809
% to Total	82.10%	82.40%	82.40%	81.10%
Adjusted EBITDA	$ 46,958	$ 30,713	$ 118,938	$ 86,566
% of Sales	18.10%	13.40%	15.90%	13.10%
KATE SPADE International
SEGMENT REPORTING
Net Sales	$ 50,958	$ 42,870	$ 143,258	$ 136,056
% to Total	16.10%	15.50%	15.70%	16.70%
Adjusted EBITDA	$ 5,287	$ 4,793	$ 17,877	$ 13,215
% of Sales	10.40%	11.20%	12.50%	9.70%
Adelington Design Group
SEGMENT REPORTING
Net Sales	$ 5,836	$ 5,965	$ 17,594	$ 17,897
% to Total	1.80%	2.10%	1.90%	2.20%
Adjusted EBITDA	$ 1,089	$ 1,127	$ 4,196	$ 2,728
% of Sales	18.70%	18.90%	23.80%	15.20%