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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%

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