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Long-Term Debt (Other Boyd Notes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
For the year ending December 31,
Unamortized discount	$ (1,888)	$ (2,702)
Interest	33,407	35,337
Gain Loss on Early Retirements of Debt	(42,364)	(40,733)	$ (1,536)
Boyd
For the year ending December 31,
Outstanding principal	3,283,129	2,309,725
Unamortized discount		(2,702)
Gain Loss on Early Retirements of Debt	(28,356)	(30,829)	$ 0
Boyd | Other
For the year ending December 31,
Unamortized discount	0
Fair Value, Inputs, Level 3 [Member] | Boyd | Other
For the year ending December 31,
Outstanding principal	$ 591
Fair Value, Measurements, Nonrecurring [Member]
For the year ending December 31,
Outstanding principal		$ 3,322,475

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-SubTopic 10
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-Paragraph 1
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Amount, after accumulated amortization, of debt discount.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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