Revenue Recognition - Summary of Net Revenues Disaggregated Type of Revenue and Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation Of Revenue [Line Items]
Net revenues	$ 663,181	$ 487,253	$ 1,936,125	$ 1,384,247
Casino
Disaggregation Of Revenue [Line Items]
Net revenues	458,000	368,169	1,385,848	1,060,417
Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	78,435	58,153	229,072	164,644
Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	94,318	44,780	237,493	114,447
Other
Disaggregation Of Revenue [Line Items]
Net revenues	32,428	16,151	83,712	44,739
Corporate
Disaggregation Of Revenue [Line Items]
Net revenues	1,908	139	5,401	377
Corporate | Other
Disaggregation Of Revenue [Line Items]
Net revenues	1,908	139	5,401	377
West Segment | Operating Segment
Disaggregation Of Revenue [Line Items]
Net revenues	151,418	129,092	397,241	346,550
West Segment | Operating Segment | Casino
Disaggregation Of Revenue [Line Items]
Net revenues	62,081	60,912	170,980	168,342
West Segment | Operating Segment | Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	32,897	27,502	90,084	76,524
West Segment | Operating Segment | Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	41,352	31,583	102,804	77,234
West Segment | Operating Segment | Other
Disaggregation Of Revenue [Line Items]
Net revenues	15,088	9,095	33,373	24,450
Midwest Segment | Operating Segment
Disaggregation Of Revenue [Line Items]
Net revenues	95,866	99,834	289,890	301,235
Midwest Segment | Operating Segment | Casino
Disaggregation Of Revenue [Line Items]
Net revenues	84,249	86,331	254,641	262,138
Midwest Segment | Operating Segment | Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	5,570	6,867	17,553	20,527
Midwest Segment | Operating Segment | Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	4,240	4,720	11,962	12,775
Midwest Segment | Operating Segment | Other
Disaggregation Of Revenue [Line Items]
Net revenues	1,807	1,916	5,734	5,795
South Segment | Operating Segment
Disaggregation Of Revenue [Line Items]
Net revenues	108,017	106,569	357,669	341,612
South Segment | Operating Segment | Casino
Disaggregation Of Revenue [Line Items]
Net revenues	87,331	86,153	291,552	278,655
South Segment | Operating Segment | Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	12,049	12,492	39,815	38,936
South Segment | Operating Segment | Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	6,647	6,169	19,822	18,462
South Segment | Operating Segment | Other
Disaggregation Of Revenue [Line Items]
Net revenues	1,990	1,755	6,480	5,559
East Segment | Operating Segment
Disaggregation Of Revenue [Line Items]
Net revenues	186,562	127,722	523,249	370,576
East Segment | Operating Segment | Casino
Disaggregation Of Revenue [Line Items]
Net revenues	129,244	113,075	378,246	329,584
East Segment | Operating Segment | Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	16,280	9,359	45,960	26,724
East Segment | Operating Segment | Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	33,039	2,308	77,372	5,976
East Segment | Operating Segment | Other
Disaggregation Of Revenue [Line Items]
Net revenues	7,999	2,980	21,671	8,292
Central Segment | Operating Segment
Disaggregation Of Revenue [Line Items]
Net revenues	119,410	23,897	362,675	23,897
Central Segment | Operating Segment | Casino
Disaggregation Of Revenue [Line Items]
Net revenues	95,095	21,698	290,429	21,698
Central Segment | Operating Segment | Food and Beverage
Disaggregation Of Revenue [Line Items]
Net revenues	11,639	1,933	35,660	1,933
Central Segment | Operating Segment | Hotel
Disaggregation Of Revenue [Line Items]
Net revenues	9,040		25,533
Central Segment | Operating Segment | Other
Disaggregation Of Revenue [Line Items]
Net revenues	$ 3,636	$ 266	$ 11,053	$ 266