CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Total revenue	$ 523,577,000	$ 437,537,000	$ 421,053,000
Operating costs and expenses:
Advertising, general and administrative	180,400,000	143,278,000	149,559,000
Expansion and pre-opening	0	2,678,000	154,000
Acquisition, integration and restructuring expense	12,168,000	6,844,000	0
Newport Grand disposal loss	0	6,514,000	0
Gain on insurance recoveries	(1,181,000)	0	0
Depreciation and amortization	32,392,000	22,332,000	22,204,000
Total operating costs and expenses	408,951,000	316,888,000	297,330,000
Income from operations	114,626,000	120,649,000	123,723,000
Other income (expense):
Interest income	1,904,000	173,000	194,000
Interest expense, net of amounts capitalized	(39,830,000)	(23,025,000)	(22,809,000)
Loss on extinguishment and modification of debt	(1,703,000)	0	0
Other, net	183,000	0	0
Total other expense, net	(39,446,000)	(22,852,000)	(22,615,000)
Income before provision for income taxes	75,180,000	97,797,000	101,108,000
Provision for income taxes	20,050,000	26,359,000	38,861,000
Net income	55,130,000	71,438,000	62,247,000
Deemed dividends related to changes in fair value of common stock subject to possible redemption	0	640,000	(2,344,000)
Net income applicable to common stockholders	$ 55,130,000	$ 72,078,000	$ 59,903,000
Net income per share, basic (in dollars per share)	$ 1.46	$ 1.95	$ 1.64
Weighted average common shares outstanding, basic (in shares)	37,705,179	36,938,943	36,478,759
Net income per share, diluted (in dollars per share)	$ 1.46	$ 1.87	$ 1.56
Weighted average common shares outstanding, diluted (in shares)	37,819,617	38,551,708	38,442,944
Gaming
Revenue:
Total revenue	$ 367,948,000	$ 327,740,000	$ 314,794,000
Operating costs and expenses:
Cost of net revenue	93,965,000	71,798,000	65,558,000
Racing
Revenue:
Total revenue	13,114,000	13,158,000	14,034,000
Operating costs and expenses:
Cost of net revenue	9,592,000	9,031,000	9,534,000
Hotel
Revenue:
Total revenue	38,988,000	21,339,000	19,431,000
Operating costs and expenses:
Cost of net revenue	14,841,000	8,266,000	7,173,000
Food and beverage
Revenue:
Total revenue	69,904,000	48,380,000	47,004,000
Operating costs and expenses:
Cost of net revenue	58,447,000	40,246,000	37,371,000
Other
Revenue:
Total revenue	33,623,000	26,920,000	25,790,000
Retail, entertainment and other
Operating costs and expenses:
Cost of net revenue	$ 8,327,000	$ 5,901,000	$ 5,777,000