Summary of Significant Accounting Policies -Revenue Recognition, Player Loyalty Programs, and Gaming and Racing Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue Recognition and Promotional Allowances
Promotional allowances	$ 45,983	$ 44,113	$ 87,841	$ 84,684
Cost of complimentary services	15,461	14,454	29,176	27,919
Gaming and Racing Taxes
Gaming expense	252,500	248,800	498,900	494,500
Rooms
Revenue Recognition and Promotional Allowances
Promotional allowances	10,298	10,098	19,493	19,220
Cost of complimentary services	1,480	1,349	2,736	2,546
Food And Beverage
Revenue Recognition and Promotional Allowances
Promotional allowances	33,386	31,796	63,953	61,318
Cost of complimentary services	13,009	12,194	24,629	23,718
Other
Revenue Recognition and Promotional Allowances
Promotional allowances	2,299	2,219	4,395	4,146
Cost of complimentary services	$ 972	$ 911	$ 1,811	$ 1,655

Represents the estimated cost of providing complimentary services during the period.

No definition available.

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- References

No definition available.

+ Details

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- Definition

This element represents gaming taxes, pari-mutuel taxes and purse expense.

+ References

No definition available.

+ Details

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- Definition

This element represents the estimated retail value of accommodations, food and beverage, and other services furnished to guests without charge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 605
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=68080496&loc=d3e51325-107943

+ Details

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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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