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Long-Term Debt (Boyd Credit Agreement - Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items] |  |  |
Prepayment fee, percentage | 1.00% |  |
Fixed quarterly amortization of principal, percentage | 5.00% |  |
Loss on early extinguishment of debt | $ 61 | $ 1,582 | $ 42,364
Amortization of debt financing costs and discounts on debt | $ 9,158 | 9,845 | $ 14,870
Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum secured leverage ratio | 4.25 |  |
Minimum consolidated interest coverage ratio required | 1.00 |  |
Line of Credit Facility, Covenant Terms, Minimum Secured Leverage Ratio Allowed | 1.00 |  |
Revolving Credit Facility and Term Loan | Boyd | Amended Credit Facility |  |  |
Line of Credit Facility [Line Items] |  |  |
Additional available borrowing capacity | $ 550,000 |  |
Senior Secured Notes | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Covenant Terms, Maximum Required Coverage Ratio | 1.0 |  |
Letter of Credit | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount outstanding | $ 12,700 |  |
Bank Credit Facility | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount outstanding | 1,771,330 | 1,621,054 |
Remaining borrowing capacity | 562,500 |  |
Bank Credit Facility | Term Loan A, Joinder Agreement [Member] | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount outstanding | 248,400 |  |
Long-term Line of Credit, Additional Available Borrowing Capacity | 49,500 |  |
Bank Credit Facility | Initial Term Loan | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount outstanding | 248,351 | 210,938 |
Bank Credit Facility | Revolving Credit Facility [Member] | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Amount outstanding | 320,000 | $ 170,000 |
Revolving Credit Facility, Joinder Agreement [Member] | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit, maximum borrowing capacity | 945,500 |  |
Additional available borrowing capacity | 170,500 |  |
Revolving Credit Facility [Member] | Boyd |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit, maximum borrowing capacity | $ 945,500 |  |

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- Definition Line of Credit Facility, Covenant Terms, Minimum Consolidated Interest Coverage Ratio Required + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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