Nature of Business and Basis of Presentation (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) Property shares	Sep. 30, 2018 shares	Sep. 30, 2019 USD ($) Segment Property shares	Jan. 01, 2019 USD ($)
Nature Of Business And Basis Of Presentation [Line Items]
Number of reportable operating segments | Segment			2
Operating lease ROU assets	$ 148,911,000		$ 148,911,000
Operating lease liability	$ 163,926,000		$ 163,926,000
Anti-dilutive potential common share equivalents | shares	730,282	1,870,290	842,142
ASU 842 [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Operating lease ROU assets	$ 0		$ 0	$ 140,715,000
Operating lease liability	$ 0		$ 0	$ 155,878,000
Maximum [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Non-cancelable operating leases term	10 years		10 years
Maximum [Member] | ASU 842 [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Operating leases term	1 year		1 year
Minimum [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Non-cancelable operating leases term	5 years		5 years
Nevada and Maryland [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Number of resort casino properties | Property	10		10