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Summary of Significant Accounting Policies (Other) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Schedule of CRDA Deposits [Line Items] |  |  |
Restricted cash, maturity of qualifying investments, maximum | 90 days |  |
Interest Costs Capitalized |  |  | $ 500
Self Insurance Reserve [Roll Forward] |  |  |
Self insurance reserve, beginning balance | $ 33,995 | $ 31,022 | 30,068
Additions |  |  |
Charged to costs and expenses | 90,299 | 84,209 | 79,685
Due to acquisitions | 3,279 | 0 | 14
Payments made | (90,072) | (81,236) | (78,745)
Self insurance reserve, ending balance | 37,501 | 33,995 | 31,022
Gaming taxes | 367,500 | 324,500 | 321,700
Advertising expense | 33,700 | 29,900 | 32,300
Corporate expense | $ 104,201 | $ 88,148 | $ 72,668

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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