v3.10.0.1

Basis and Summary of Significant Accounting Policies - Debt (Details) - USD ($) $ in Thousands | Oct. 23, 2018 | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Subsequent Event [Line Items] |  |  |
Principal balance on term loan |  | $ 297,340 | $ 368,798
Loan facility to franchisees, maximum commitment amount |  | $ 85,000 |
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Loan facility to franchisees, maximum commitment amount | $ 55,000 |  |
Unsecured Debt | Subsequent Event | Term Loan |  |  |
Subsequent Event [Line Items] |  |  |
Line of credit, maximum borrowing capacity | 225,000 |  |
Principal balance on term loan | $ 87,500 |  |

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