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Summary of Goodwill Activity by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill And Intangible Assets [Line Items]
Beginning balance	$ 105,655	$ 96,288
Goodwill acquired during the year	52,479	8,193
Increase (decrease) in goodwill		1,174
Ending balance	158,134	105,655
Casinos [Member]
Goodwill And Intangible Assets [Line Items]
Beginning balance	7,796	17,080
Goodwill acquired during the year	52,479
Increase (decrease) in goodwill		(9,284)
Ending balance	60,275	7,796
Distributed Gaming [Member]
Goodwill And Intangible Assets [Line Items]
Beginning balance	97,859	79,208
Goodwill acquired during the year		8,193
Increase (decrease) in goodwill		10,458
Ending balance	$ 97,859	$ 97,859

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Goodwill and intangible assets.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460

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