SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) Segment Store Vendor shares	Dec. 31, 2015 USD ($) Vendor shares	Dec. 31, 2014 USD ($) Vendor shares
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of reportable segments | Segment		2
Evaluation of Long-lived Assets [Abstract]
Impairment charge on long-lived assets			$ 1.4
Advertising Costs [Abstract]
Advertising expense		$ 71.4	74.4	$ 68.1
Vendor consideration		$ (6.4)	$ (20.2)	$ (38.8)
Net Income (Loss) Per Common Share [Abstract]
Stock options and Restricted stock awards securities excluded from computation of earnings (loss) per share (in shares) | shares		1.3	1.0	0.8
Employee Benefit Plans [Abstract]
Minimum annual contribution per employee		1.00%
Aggregate expense in contributions plans		$ 0.4	$ 0.9	$ 0.9
Fair Value Measurement [Abstract]
Weighted average interest rate on short-term borrowings	4.70%	4.70%	4.30%	4.30%
Minimum [Member]
Advertising Costs [Abstract]
Amortization period		1 month
Maximum [Member]
Advertising Costs [Abstract]
Amortization period		4 months
NATG [Member]
Evaluation of Long-lived Assets [Abstract]
Impairment charge on long-lived assets				$ 10.0
Advertising Costs [Abstract]
Advertising expense		$ 1.5	$ 7.5	10.7
Vendor consideration		0.9	(12.1)	(24.9)
Employee Benefit Plans [Abstract]
Aggregate expense in contributions plans		0.0	$ 0.4	$ 0.5
EMEA [Member]
Evaluation of Long-lived Assets [Abstract]
Impairment charge on long-lived assets		$ 1.7
Goodwill and Intangible Assets [Abstract]
Impairment charge on intangible assets	$ 0.3
IPG [Member]
Goodwill and Intangible Assets [Abstract]
Impairment charge on intangible assets	$ 0.1
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		10 years
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		30 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		50 years
Internal-Use Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		3 years
NATG [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of remaining stores | Store		3
Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Number of vendors | Vendor		2	2	2
Supplier Concentration Risk [Member] | Vendor One [Member]
Concentration Risk [Line Items]
Concentration risk		15.20%	12.20%	12.60%
Supplier Concentration Risk [Member] | Vendor Two [Member]
Concentration Risk [Line Items]
Concentration risk		13.80%	10.90%	11.60%