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Long-Term Debt (Boyd Senior and Senior Subordinated Notes Narrative) (Details) $ in Thousands |  |  | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May. 22, 2015 USD ($) | Jun. 08, 2012 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Nov. 06, 2015 USD ($) | May. 21, 2015 | Nov. 10, 2010
For the year ending December 31, |  |  |  |  |  |  |  |  |
Outstanding principal |  |  |  | $ 3,322,475 |  |  |  |  |
Interest |  |  |  | 35,337 | $ 33,985 |  |  |  |
Premium and Consent Fees Paid |  |  |  | (24,246) | 0 | $ 0 |  |  |
Payments of Debt Issuance Costs |  |  |  | 14,004 | 288 | 44,752 |  |  |
Gain Loss on Early Retirements of Debt |  |  |  | (40,733) | (1,536) | (54,202) |  |  |
Boyd |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Outstanding principal |  |  |  | 2,309,725 | 2,389,165 |  |  |  |
Premium and Consent Fees Paid |  |  |  | (24,246) | 0 | 0 |  |  |
Payments of Debt Issuance Costs |  |  |  | 14,004 | 83 | $ 24,349 |  |  |
Subsidiaries, Ownership Percentage |  |  |  |  |  | 100.00% |  |  | 100.00%
Gain Loss on Early Retirements of Debt |  |  |  | $ (30,829) | 0 | $ (25,001) |  |  |
Boyd | Senior Notes | 9.125% Senior Notes Due 2018 |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Outstanding principal |  |  |  |  | $ 500,000 |  |  |  |
Debt instrument, stated interest rate |  |  |  |  | 9.13% |  |  |  | 9.125%
Premium and Consent Fees Paid |  |  | $ 24,000 |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  | $ 4,900 |  |  |  |  |  |
Debt instrument, redemption price, percentage |  |  | 104.563% |  |  |  |  |  |
Boyd | Senior Notes | 9.00% senior notes due 2020 |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Outstanding principal |  |  |  |  | $ 350,000 |  |  |  |
Face amount |  | $ 350,000 |  |  |  |  |  |  |
Debt instrument, stated interest rate |  | 9.00% |  | 9.00% | 9.00% |  |  |  |
Conditional repurchase price, % of principal |  |  |  | 101.00% |  |  |  |  |
Boyd | Senior Notes | 9.00% senior notes due 2020 | Prior to July 1, 2016 |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage |  | 100.00% |  |  |  |  |  |  |
Boyd | Senior Notes | 9.00% senior notes due 2020 | After July 1, 2016 and Prior to 2018 |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage |  | 104.50% |  |  |  |  |  |  |
Boyd | Senior Notes | 9.00% senior notes due 2020 | During 2018 and Thereafter |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage |  | 100.00% |  |  |  |  |  |  |
Boyd | Senior Notes | Senior Notes Due 2023 [Member] |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate |  |  |  | 6.875% |  |  |  | 6.875% |
Payments of Debt Issuance Costs | $ 14,000 |  |  |  |  |  |  |  |
Boyd | Senior Notes | Senior Notes Due 2023 [Member] | Prior to May 15, 2018 [Member] |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage | 100.00% |  |  |  |  |  |  |  |
Boyd | Senior Notes | Senior Notes Due 2023 [Member] | After May 15, 2018 and Prior to 2021 [Member] |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage | 105.156% |  |  |  |  |  |  |  |
Boyd | Senior Subordinated Notes | 6.75% Senior Subordinated Notes Due 2014 |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Outstanding principal |  |  |  |  |  |  | $ 157,800 |  |
Interest |  |  |  |  |  |  | $ 5,800 |  |
Gain Loss on Early Retirements of Debt |  |  |  | $ 7,900 |  |  |  |  |
Boyd | Senior Secured Notes |  |  |  |  |  |  |  |  |
For the year ending December 31, |  |  |  |  |  |  |  |  |
Minimum required coverage ratio |  |  |  | 2.0 |  |  |  |  |

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