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Summary of Goodwill Activity by Reportable Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Goodwill And Intangible Assets [Line Items] |  |
Beginning balance | $ 158,134 | $ 105,655
Goodwill acquired during the year | 0 | 52,479
Ending balance | 158,134 | 158,134
Casinos [Member] |  |
Goodwill And Intangible Assets [Line Items] |  |
Beginning balance | 60,275 | 7,796
Goodwill acquired during the year | 0 | 52,479
Ending balance | 60,275 | 60,275
Distributed Gaming [Member] |  |
Goodwill And Intangible Assets [Line Items] |  |
Beginning balance | 97,859 | 97,859
Goodwill acquired during the year | 0 |
Ending balance | $ 97,859 | $ 97,859

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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