SEGMENT INFORMATION Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Revenue from External Customer [Line Items]
Net sales	$ 934,203	$ 901,425	$ 639,471	$ 724,085	$ 866,544	$ 849,806	$ 612,765	$ 684,764	$ 3,199,184	$ 3,013,879	$ 2,893,868
Baby [Member]
Revenue from External Customer [Line Items]
Net sales									1,241,701	1,173,002	1,107,973
Playclothes [Member]
Revenue from External Customer [Line Items]
Net sales									1,215,238	1,182,281	1,146,797
Sleepwear [Member]
Revenue from External Customer [Line Items]
Net sales									407,160	378,419	381,574
Other Products [Member]
Revenue from External Customer [Line Items]
Net sales									$ 335,085	$ 280,177	$ 257,524