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Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 04, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Oct. 02, 2015 | Mar. 31, 2012
Variable Interest Entity [Line Items] |  |  |  |  |  |
Calder exit costs |  | $ 13,854 | $ 2,298 | $ 0 |  |
Advanced Sales of Personal Seat Licenses, Contractual Life, Term One |  | 1 year |  |  |  |
Advanced Sales of Personal Seat Licenses, Contractual Life, Term Two |  | 2 years |  |  |  |
Advanced Sales of Personal Seat Licenses, Contractual Life, Term Three |  | 3 years |  |  |  |
Advanced Sales of Personal Seat Licenses, Contractual Life, Term Four |  | 5 years |  |  |  |
Advanced Sales of Personal Seat Licenses, Contractual Life, Term Five |  | 30 years |  |  |  |
Asset impairment charge |  | $ 12,700 |  |  |  |
Research & development expenditures |  | 39,399 | 0 | 0 |  |
Advertising and marketing expense |  | $ 130,700 | 28,800 | $ 23,700 |  |
Minimum |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Gaming Tax Rate |  | 1.50% |  |  |  |
Pari-Mutuel Tax Rate |  | 0.50% |  |  |  |
Maximum |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Gaming Tax Rate |  | 46.00% |  |  |  |
Pari-Mutuel Tax Rate |  | 10.00% |  |  |  |
Racing |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage earned on total amount wagered |  | 11.00% |  |  |  |
TwinSpires |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage earned on total amount wagered |  | 19.00% |  |  |  |
Asset impairment charge | $ 3,200 |  |  |  |  |
Adjustment | Selling, General and Administrative Expense |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Calder exit costs |  | $ (2,300) |  |  |  |
Adjustment | Calder Exit Costs |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Calder exit costs |  | 2,300 |  |  |  |
New Accounting Pronouncement, Early Adoption, Effect | Non-current assets |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Debt issuance costs |  |  | $ (6,300) |  |  |
New Accounting Pronouncement, Early Adoption, Effect | Long-term debt and notes payable, net |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Debt issuance costs |  | $ 6,300 |  |  |  |
Miami Valley Gaming LLC |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |  |  | 50.00%
Saratoga |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage |  | 25.00% |  |  | 25.00% |
Fight! Magazine |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Percentage of assets sold |  | 100.00% |  |  |  |

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