SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2015 Store	Dec. 31, 2015 USD ($) Segment Store Vendor shares	Dec. 31, 2014 USD ($) Vendor shares	Dec. 31, 2013 USD ($) Vendor shares	Dec. 01, 2015 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of reportable segments | Segment		3
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of retail stores closed | Store	31
Evaluation of Long-lived Assets [Abstract]
Impairment charge on long-lived assets		$ 1.4
Advertising Costs [Abstract]
Amortization period, minimum		1 month
Amortization period, maximum		4 months
Advertising expense		$ 74.4	$ 68.1	$ 60.1
Vendor consideration		$ 20.2	$ 38.8	$ 45.9
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		1.0	0.8	1.3
Employee Benefit Plans [Abstract]
Minimum annual contribution per employee		1.00%
Aggregate expense in contributions plans		$ 0.9	$ 0.9	$ 0.9
Fair Value Measurement [Abstract]
Weighted average interest rate on short-term borrowings		4.30%	4.30%	4.30%
Recent Accounting Pronouncements [Abstract]
Reclassification of net current deferred tax assets			$ 1.7
Reclassification of noncurrent deferred tax liabilities			$ 1.9
Concentration Risk [Line Items]
Number of vendor | Vendor		2	2	1
NATG [Member]
Evaluation of Long-lived Assets [Abstract]
Impairment charge on long-lived assets			$ 10.0
Advertising Costs [Abstract]
Advertising expense		$ 7.5	10.7	$ 14.1
Vendor consideration		12.1	24.9	28.3
Employee Benefit Plans [Abstract]
Aggregate expense in contributions plans		$ 0.4	0.5	0.5
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]
Consideration received from disposal of business					$ 14.0
Number of remaining stores | Store		3
Pretax losses on disposal		$ 39.0	$ 17.9	$ 26.8
Supplier Concentration Risk [Member] | Vendor One [Member]
Concentration Risk [Line Items]
Concentration risk		12.20%	12.60%	13.90%
Supplier Concentration Risk [Member] | Vendor Two [Member]
Concentration Risk [Line Items]
Concentration risk		10.90%	11.60%