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Business Combination, Proposed Consideration, Liabilities Incurred

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Debt Instrument, Interest Rate Floor

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Debt Instrument, Issue Price, Percentage of Principal Amount

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Debt Instrument, Redemption, Aggregate Principal Amount of Special Mandatory Redemption

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Equity Investee Ownership Interest Acquired in Joint Venture

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Equity Investee Ownership Interest in Joint Venture

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Equity Investee Ownership Interest in Joint Venture, Portion Expected to be Acquired

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Proposed Common Stock Offering, Maximum Aggregate Offering

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- Definition

The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage of principal amount of debt redeemed.

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Face (par) amount of the original debt instrument that was repurchased.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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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.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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.

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Marketable Securities, Eldorado Resorts, Inc. (Details) - USD ($)			6 Months Ended	11 Months Ended
	Jul. 23, 2015	Sep. 19, 2014	Aug. 31, 2015	Aug. 31, 2015	Jul. 14, 2015	Jul. 13, 2015	Jul. 07, 2015	Jun. 30, 2015	Feb. 28, 2015	Dec. 31, 2007
Schedule of Equity Method Investments [Line Items]
Change in net unrealized holding gain (loss)		$ (7,100,000)	$ 19,400,000	$ 21,300,000
Investment										$ 38,000,000
Eldorado
Schedule of Equity Method Investments [Line Items]
Equity method investee percentage ownership in JV (percent)			17.0359%	17.0359%
Investment			$ 37,966,744	$ 37,966,744					$ 18,540,023
Mesquite
Schedule of Equity Method Investments [Line Items]
Common stock issued (shares)		4,030,440	4,030,440	4,030,440
Par value (usd per share)		$ 0.00001	$ 0.00001	$ 0.00001
Equity method investee percentage ownership in JV (percent)		8.60%	8.60%	8.60%
Investment			$ 6,277,222	$ 6,277,222					$ 4,282,422
Silver Legacy Resort Casino \| Eldorado
Schedule of Equity Method Investments [Line Items]
Equity method investee percentage ownership in JV (percent)			50.00%	50.00%			50.00%
Equity investee ownership interest acquired in joint venture							98.10%
Equity investee ownership interest in joint venture, portion expected to be acquired							1.90%
Proposed purchase price							$ 72,500,000
96% owned subsidiary \| Eldorado
Schedule of Equity Method Investments [Line Items]
Proposed liabilities assumed								$ 82,000,000
Proposed common stock offering, maximum aggregate offering					$ 80,000,000
Senior Notes \| Senior Secured Notes due 2019 \| 96% owned subsidiary \| Eldorado
Schedule of Equity Method Investments [Line Items]
Principal outstanding						$ 168,000,000
Interest rate (percent)						8.625%
Debt Instrument, Repurchased Face Amount	$ 130,000,000
Debt instrument, redemption price, percentage of principal amount redeemed	104.792%
Senior Notes \| Senior Secured Second Lien Notes due 2019 \| 96% owned subsidiary \| Eldorado
Schedule of Equity Method Investments [Line Items]
Principal outstanding						$ 560,700,000
Interest rate (percent)						11.50%
Debt Instrument, Repurchased Face Amount	$ 403,900,000
Debt instrument, redemption price, percentage of principal amount redeemed	106.639%
Senior Notes \| Eldorado Notes and MTR Notes \| 96% owned subsidiary \| Eldorado
Schedule of Equity Method Investments [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	3.00%
Senior Notes \| New ERI Notes \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Interest rate (percent)	7.00%
Face amount of debt	$ 375,000,000.0
Debt Instrument, issue price, percentage of principal amount	100.00%
Escrow deposit	$ 50,000,000
Debt instrument, redemption, aggregate principal amount of special mandatory redemption	$ 50,000,000
Debt instrument, redemption price, percentage of principal amount redeemed	100.00%
Term Loan \| New ERI Term Loan \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Face amount of debt	$ 425,000,000
Debt instrument, term	7 years
Debt Instrument, issue price, percentage of principal amount	99.50%
Revolving Credit Facility \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Face amount of debt	$ 150,000,000
Debt instrument, term	5 years
Long-term line of credit	$ 40,000,000
London Interbank Offered Rate (LIBOR) \| Term Loan \| New ERI Term Loan \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	3.25%
Debt instrument, interest rate floor	1.00%
Base Rate \| Term Loan \| New ERI Term Loan \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	2.25%
Minimum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Minimum \| Base Rate \| Revolving Credit Facility \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Maximum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	3.25%
Maximum \| Base Rate \| Revolving Credit Facility \| 96% owned subsidiary
Schedule of Equity Method Investments [Line Items]
Debt instrument, basis spread on variable rate	2.25%