Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($) segment	Mar. 31, 2018 USD ($)	Jan. 01, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Revenues:
Revenues	$ 1,282,571		$ 816,085
Adjusted EBITDAR:
Adjusted EBITDAR	391,437		242,546
Rent expense associated with triple net operating lease	(84,730)		0
Stock-based compensation	(3,417)		(2,929)
Cash-settled stock award variance	(472)		7,462
Loss on disposal of assets	(522)		(55)
Contingent purchase price	(4,717)		(1,134)
Pre-opening and acquisition costs	(4,380)		(6,093)
Depreciation and amortization	(104,053)		(60,390)
Impairment losses	0		(618)
Non-operating items for Kansas JV	(1,073)		(1,294)
Interest expense	(132,587)		(115,740)
Interest income	319		249
Loss on early extinguishment of debt	0		(882)
Other	0		4
Income before income taxes	55,805		61,126
Income tax expense	(14,818)		(15,689)
Net income	40,987		45,437
Capital expenditures:
Capital expenditures	37,666		11,813
Assets:
Investment in and advances to unconsolidated affiliates	127,924	$ 128,488
Total assets	13,498,171	$ 10,961,012		$ 13,424,830
South/West segment
Segment Reporting Information [Line Items]
Number of new reportable segments from division of segment | segment		2
Operating segments | Northeast segment
Revenues:
Revenues	550,578		458,719
Adjusted EBITDAR:
Adjusted EBITDAR	164,754		144,977
Capital expenditures:
Capital expenditures	12,685		4,212
Assets:
Investment in and advances to unconsolidated affiliates	105	$ 105
Total assets	1,470,512	1,330,256
Operating segments | South segment
Revenues:
Revenues	291,942		63,330
Adjusted EBITDAR:
Adjusted EBITDAR	97,844		21,118
Capital expenditures:
Capital expenditures	8,872		682
Assets:
Investment in and advances to unconsolidated affiliates	0	0
Total assets	1,458,782	1,082,304
Operating segments | West segment
Revenues:
Revenues	158,654		97,966
Adjusted EBITDAR:
Adjusted EBITDAR	49,923		23,931
Capital expenditures:
Capital expenditures	7,027		2,730
Assets:
Investment in and advances to unconsolidated affiliates	0	0
Total assets	752,189	755,665
Operating segments | Midwest segment
Revenues:
Revenues	271,262		185,534
Adjusted EBITDAR:
Adjusted EBITDAR	99,219		68,185
Capital expenditures:
Capital expenditures	7,039		3,007
Assets:
Investment in and advances to unconsolidated affiliates	88,899	89,350
Total assets	1,489,105	1,411,468
Other
Revenues:
Revenues	10,135		10,536
Adjusted EBITDAR:
Adjusted EBITDAR	(20,303)		(15,665)
Capital expenditures:
Capital expenditures	2,043		$ 1,182
Assets:
Investment in and advances to unconsolidated affiliates	38,920	39,033
Total assets	$ 8,327,583	$ 6,381,319