Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Carrying Amount
Financial assets:
Cash and Cash Equivalents	$ 237,729	$ 208,673
Fair Value
Financial assets:
Cash and Cash Equivalents	237,729	208,673
Level 1
Financial assets:
Cash and Cash Equivalents	237,729	208,673
Senior Secured Credit Facility \| Carrying Amount
Financial assets:
Debt Instrument, Fair Value Disclosure	810,153	785,683
Senior Secured Credit Facility \| Fair Value
Financial assets:
Debt Instrument, Fair Value Disclosure	825,313	799,556
Senior Secured Credit Facility \| Level 1
Financial assets:
Debt Instrument, Fair Value Disclosure	710,313	714,556
Senior Secured Credit Facility \| Level 2
Financial assets:
Debt Instrument, Fair Value Disclosure	115,000	85,000
Senior Unsecured Notes \| Carrying Amount
Financial assets:
Debt Instrument, Fair Value Disclosure	295,770	295,610
Senior Unsecured Notes \| Fair Value
Financial assets:
Debt Instrument, Fair Value Disclosure	299,250	276,000
Senior Unsecured Notes \| Level 1
Financial assets:
Debt Instrument, Fair Value Disclosure	$ 299,250	276,000
Other long-term obligations \| Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course
Total Reduction in Fair Value Recorded during the year
Discount Rate	5.00%
Other long-term obligations \| Carrying Amount
Financial assets:
Debt Instrument, Fair Value Disclosure	$ 150,300	135,000
Other long-term obligations \| Fair Value
Financial assets:
Debt Instrument, Fair Value Disclosure	150,049	135,000
Other long-term obligations \| Level 2
Financial assets:
Debt Instrument, Fair Value Disclosure	150,049	135,000
Other Liabilities \| Carrying Amount
Financial assets:
Debt Instrument, Fair Value Disclosure	19,540	19,189
Other Liabilities \| Fair Value
Financial assets:
Debt Instrument, Fair Value Disclosure	19,540	19,189
Other Liabilities \| Level 3
Financial assets:
Debt Instrument, Fair Value Disclosure	19,540	$ 19,189
Other Liabilities \| Plainridge Racecourse \| General and Administrative Expense [Member]
Total Reduction in Fair Value Recorded during the year
Change in fair value of contingent purchase price consideration	$ 400

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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