Long-Term Debt (Other Boyd Notes) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
For the year ending December 31,
Unamortized discount	$ (1,286)	$ (1,556)
Interest	35,734	19,858
Gain Loss on Early Retirements of Debt	(61)	(1,582)	$ (42,364)
Boyd
For the year ending December 31,
Outstanding principal	4,030,035	3,121,558
Gain Loss on Early Retirements of Debt	(61)	(1,582)	$ (28,356)
Boyd \| Other
For the year ending December 31,
Unamortized discount	$ 0	$ 0
Line of Credit Facility, Interest Rate at Period End	11.01%	5.80%
Notes Payable, Other Payables [Member] \| Boyd \| Other
For the year ending December 31,
Outstanding principal	$ 57,700
Belterra Park [Member] \| Boyd \| Other
For the year ending December 31,
Line of Credit Facility, Interest Rate at Period End	11.11%

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- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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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The effective interest rate at the end of the reporting period.

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