Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course
Fair value of assets and liabilities
Discount Rate	5.00%
Contingent Purchase Price | Plainridge Racecourse
Fair value of assets and liabilities
Charge (reduction) to general and administrative expense related to change in fair value measurement of contingent obligations	$ 2,600	$ (1,200)
Level 1
Financial assets:
Cash and cash equivalents	259,488		$ 229,510
Level 3
Financial assets:
Advances to Jamul Tribe	98,198		98,000
Financial liabilities:
Other liabilities	50,783		48,244
Level 3 | Contingent Purchase Price
Financial liabilities:
Balance at beginning of the period	48,244
Total (gains) (realized or unrealized):
Payments	(21)
Included in earnings	2,560
Balance at end of the period	$ 50,783
Level 3 | Contingent Purchase Price | Discounted Cash Flow | Plainridge Racecourse
Fair value of assets and liabilities
Discount Rate	8.30%
Level 3 | Contingent Purchase Price | Option Pricing Method | Rocket Speed
Fair value of assets and liabilities
Discount Rate	12.00%
Volatility rate	83.11%
Senior Secured Credit Facility | Level 1
Financial liabilities:
Long-term debt	$ 803,750		785,092
Senior Secured Credit Facility | Level 2
Financial liabilities:
Long-term debt	131,000		191,000
Senior Unsecured Notes | Level 1
Financial liabilities:
Long-term debt	394,000		312,000
Other long-term obligations | Level 2
Financial liabilities:
Long-term debt	124,424		152,132
Carrying Amount
Financial assets:
Cash and cash equivalents	259,488		229,510
Advances to Jamul Tribe	92,334		92,100
Financial liabilities:
Other liabilities	50,783		48,244
Carrying Amount | Senior Secured Credit Facility
Financial liabilities:
Long-term debt	896,539		962,703
Carrying Amount | Senior Unsecured Notes
Financial liabilities:
Long-term debt	399,228		296,895
Carrying Amount | Other long-term obligations
Financial liabilities:
Long-term debt	126,052		154,084
Fair Value
Financial assets:
Cash and cash equivalents	259,488		229,510
Advances to Jamul Tribe	98,198		98,000
Financial liabilities:
Other liabilities	50,783		48,244
Fair Value | Senior Secured Credit Facility
Financial liabilities:
Long-term debt	934,750		976,092
Fair Value | Senior Unsecured Notes
Financial liabilities:
Long-term debt	394,000		312,000
Fair Value | Other long-term obligations
Financial liabilities:
Long-term debt	$ 124,424		$ 152,132