Segment Reporting (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Apr. 30, 2016	Jun. 30, 2016		Jun. 30, 2015
Segment Reporting Information [Line Items]
Net revenues		$ 351,486	$ 337,818		$ 710,733		$ 680,587
Adjusted EBITDAM		118,673	109,890		251,889	[1]	229,732	[1]
Development and Preopening		(373)	(286)		(721)		(414)
Depreciation, Depletion and Amortization		(38,436)	(35,810)		(77,863)		(71,003)
Professional and Contract Services Expense		0	0		0		0
Share-based compensation	$ 800	3,602	9,851	$ 3,400	4,222		12,858
Donation to UNLV		0	(2,500)		0		(2,500)
Asset Impairment Charges		0	2,001		0		2,001
Write-Downs and Other Charges, Net.		(10,966)	622		(13,334)		(2,393)
Settlement Agreement For Consultant Fees		1,133	0		1,133		0
Adjusted EBITDAM attributable to MPM noncontrolling interest		5,211	4,688		9,332		8,352
Operating income and earnings (losses) from subsidiaries and joint ventures		71,640	64,752		166,214		146,915
Interest Expense		(34,078)	(36,515)		(69,146)		(72,977)
Loss on extinguishment and modification of debt		(7,084)	(90)		(7,084)		(90)
Gain (Loss) on Derivative Instruments, Net, Pretax		90	(1)		87		(4)
Net income (loss) from continuing operations		30,568	28,146		90,071		73,844
Las Vegas Operations [Member]
Segment Reporting Information [Line Items]
Net revenues		322,876	315,547		654,334		637,046
Adjusted EBITDAM		104,627	101,833		223,637	[1]	213,082	[1]
Native American Management [Member]
Segment Reporting Information [Line Items]
Net revenues		27,320	20,883		53,807		40,669
Adjusted EBITDAM		20,096	14,353		40,528	[1]	28,756	[1]
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net revenues		350,196	336,430		708,141		677,715
Adjusted EBITDAM		124,723	116,186		264,165	[1]	241,838	[1]
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Net revenues		1,290	1,388		2,592		2,872
Adjusted EBITDAM		$ (6,050)	$ (6,296)		$ (12,276)	[1]	$ (12,106)	[1]

[1] (a)Adjusted EBITDA includes income from continuing operations plus preopening, depreciation and amortization, share-based compensation, a donation to UNLV, asset impairment, write-downs and other charges, net, interest expense, net, loss on extinguishment and modification of debt, and change in fair value of derivative instruments, and excludes the impact of a settlement agreement and Adjusted EBITDA attributable to the noncontrolling interests of MPM.