Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Segment Information - Additional Information (Details)	1 Months Ended	12 Months Ended
Segment Information - Additional Information (Details)	Aug. 31, 2018 casino	Dec. 31, 2018 Segment	Jul. 16, 2018
Segment Reporting Information [Line Items]
Number of operating segments \| Segment		5
Ocean Downs and Racing Services
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage	100.00%		50.00%
Saratoga
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage			25.00%
MISSISSIPPI
Segment Reporting Information [Line Items]
Number of casinos \| casino	2