SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017 USD ($)	Oct. 29, 2016 USD ($)	Oct. 28, 2017 USD ($)	Oct. 29, 2016 USD ($)	Jan. 28, 2017 USD ($)
Segment Reporting [Abstract]
Percentage of entity-wide sales qualifying purchaser as major customer (as a percent)			10.00%
Segment information
Business Exit Costs	$ 4	$ 17	$ 14	$ 276
Net sales:
Total net sales	490,026	473,777	1,300,303	1,264,544
Gross Profit:
Total gross profit	202,433	194,517	501,429	483,739
Operating income (loss):
Total operating income (loss)	$ 64,149	$ 62,080	$ 109,652	$ 98,750
Operating income (loss) as a percent of net sales:
Total operating income (loss) (as a percent)	13.10%	13.10%	8.40%	7.80%
Depreciation and amortization:
Total depreciation and amortization	$ 16,789	$ 16,586	$ 48,460	$ 48,938
Capital expenditures:
Total capital expenditures	14,726	10,447	37,882	26,483
Total assets:
Total assets	1,013,424	964,084	1,013,424	964,084	$ 890,923
The Childrens Place US [Member]
Net sales:
Total net sales	427,603	412,380	1,149,741	1,106,676
Operating income (loss):
Total operating income (loss)	$ 51,751	$ 48,997	$ 89,567	$ 74,535
Operating income (loss) as a percent of net sales:
Total operating income (loss) (as a percent)	12.10%	11.90%	7.80%	6.70%
Depreciation and amortization:
Total depreciation and amortization	$ 14,921	$ 14,073	$ 43,155	$ 43,605
Capital expenditures:
Total capital expenditures	14,415	10,160	37,291	24,989
Total assets:
Total assets	$ 825,969	$ 799,908	$ 825,969	$ 799,908	716,377
Number of Stores	898	930	898	930
The Children's Place Canada [Member]
Net sales:
Total net sales	$ 62,423	$ 61,397	$ 150,562	$ 157,868
Operating income (loss):
Total operating income (loss)	$ 12,398	$ 13,083	$ 20,085	$ 24,215
Operating income (loss) as a percent of net sales:
Total operating income (loss) (as a percent)	19.90%	21.30%	13.30%	15.30%
Depreciation and amortization:
Total depreciation and amortization	$ 1,868	$ 2,513	$ 5,305	$ 5,333
Capital expenditures:
Total capital expenditures	311	287	591	1,494
Total assets:
Total assets	$ 187,455	$ 164,176	$ 187,455	$ 164,176	$ 174,546
Number of Stores	129	131	129	131