Nature of Business and Basis of Presentation (Details Textual)	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) Property shares	Jun. 30, 2019 USD ($) Segment Property shares	Apr. 25, 2019 USD ($)	Apr. 15, 2019 USD ($)	Mar. 12, 2019 USD ($)	Jan. 01, 2019 USD ($)
Nature Of Business And Basis Of Presentation [Line Items]
Number of reportable operating segments | Segment		2
Operating lease ROU assets	$ 158,085,000	$ 158,085,000
Operating lease liability	$ 172,777,000	$ 172,777,000
Anti-dilutive potential common share equivalents | shares	739,934	892,282
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
Senior Unsecured Notes Due 2026 [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Debt Instrument, Face Amount			$ 375,000,000	$ 375,000,000
Debt instrument interest stated percentage			7.625%	7.625%
Maximum [Member]
Nature Of Business And Basis Of Presentation [Line Items]
Common stock repurchase, authorized					$ 25,000,000
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