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Basis of Presentation (Details) $ in Millions |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 24, 2017 USD ($) | Dec. 01, 2015 store | Jun. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2017 USD ($)
SARL Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Note receivable from disposition of SARL business | $ 3.3 |  |  |  | $ 2.2
NATG |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Number of remaining stores | store |  | 3 |  |  |
Financial obligations related to leased facilities, carrying value |  |  | $ 46.4 | $ 46.4 |
Reserve for lease obligations |  |  | 13.0 | 13.0 |
Lease obligations, fair value |  |  | 46.4 | 46.4 |
Lease reserves for leased facilities |  |  | $ 0.1 | $ (0.1) |
SARL Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Percentage of residual equity position retained | 5.00% |  |  |  |

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