Description of Business - Additional Information (Details) slot_machine in Thousands, $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2020 segment property	Jul. 31, 2020 property	Dec. 31, 2020 venue segment	Dec. 31, 2020 segment	Dec. 31, 2020 segment sportsbook	Dec. 31, 2020 segment slot_machine	Dec. 31, 2020 USD ($)	Dec. 31, 2020 numberOfTableGames	Dec. 31, 2020 state
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of pari-mutuel gaming entertainment venues | venue			3
Historical racing machines | segment	3,050		3,050	3,050	3,050	3,050
Number of retail sportbooks | sportsbook					7
Number of states in which entity operates	8		8	8	8	8			8
Number of slot machines				11,000		11
Number of table games	200		200	200	200	200		200
Number of properties temporarily suspended | property	3	1
Employee retention tax credit received, CARES Act							$ 2.7
Deferred tax liability, CARES Act							$ 5.3