Investment In and Advances To Unconsolidated Affiliates - Miami Valley Gaming Joint Venture (Details) $ in Thousands		12 Months Ended			36 Months Ended
	Dec. 21, 2012 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 USD ($)	Dec. 12, 2013 ft² a terminal mi	Mar. 31, 2012
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets		$ 24,502	$ 24,096		$ 24,502
Investment Affiliate-Property Plant & Equipment		119,675	130,868		119,675
Equity Method Investment, Summarized Financial Information, Noncurrent Assets		106,660	105,906		106,660
Equity Method Investment, Summarized Financial Information, Assets		250,837	260,870		250,837
Equity Method Investment, Summarized Financial Information, Current Liabilities		21,620	16,783		21,620
Equity Method Investment-Long-term Debt, Current Maturities		8,333	8,332		8,333
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities		20,520	26,584		20,520
Investment Affiliate-Other Liabilities		75	75		75
Equity Method Investment Summarized Financial Information, Equity		200,289	209,096		200,289
Equity Method Investment, Summarized Financial Information, Liabilities and Equity		250,837	260,870		$ 250,837
Investment Affiliate-Gaming Revenue		130,327	126,374	$ 6,144
Investment Affiliate-Non-Gaming Revenue		6,568	6,257	5,479
Equity Method Investment, Summarized Financial Information, Revenue		136,895	132,631	11,623
Investment Affiliate-Expenses		98,688	97,648	10,926
Equity Method, Depreciation & Amortization		12,816	12,299	935
Investment Affiliate-Pre-Opening Expenses		0	54	7,240
Equity Method Investment Operating Income Loss		25,391	22,630	(7,478)
Investment Affiliate-Interest		(4,197)	(4,829)	(397)
Equity Method Investment, Summarized Financial Information, Net Income (Loss)		21,194	17,801	(7,875)
Dividend from investment in unconsolidated affiliates		15,250	0	0
Equity in income (losses) of unconsolidated investments		$ 11,180	6,328	(4,142)
Miami Valley Gaming LLC
Investments in and Advances to Affiliates [Line Items]
Equity method investment, ownership percentage		50.00%			50.00%		50.00%
Equity method investments	$ 60,000
Note Payable, Term	6 years
Equity Method Investments, Contingent Payable	$ 10,000
Financial Performance Period To Determine Potential Contingent Consideration Payment	7 years
Acres | a						120
Race track, length | mi						0.625
Number of lottery terminals | terminal						1,590
Square footage of Casino | ft²						186,000
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities	$ 50,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	5.00%
Repayments of Notes Payable					$ 16,700
Dividend from investment in unconsolidated affiliates		$ 15,000
Equity in income (losses) of unconsolidated investments		$ 10,597	$ 8,900	$ (3,718)
Funded at Closing | Miami Valley Gaming LLC
Investments in and Advances to Affiliates [Line Items]
Equity method investments	$ 10,000
Notes Payable, Other Payables | Miami Valley Gaming LLC
Investments in and Advances to Affiliates [Line Items]
Equity method investments	$ 50,000