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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% |  |

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