Commitments and Contingencies (Details) (USD $)			3 Months Ended			6 Months Ended	3 Months Ended		6 Months Ended					6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Boomtown New Orleans Room	Jun. 30, 2013 L'Auberge Baton Rouge	Dec. 31, 2011 L'Auberge Baton Rouge	Jun. 30, 2013 Lumiere Place [Member]	Jun. 30, 2013 River City Casino [Member]	Mar. 31, 2010 River City Casino [Member]	Jun. 30, 2013 River City Casino [Member] member	Jun. 30, 2013 River City Casino [Member]	Jul. 31, 2013 River Downs	Jun. 30, 2013 River Downs	Jun. 30, 2013 Indiana Income Tax	Jun. 30, 2013 Minimum Indiana Income Tax	Jun. 30, 2013 Maximum Indiana Income Tax
Long-term Purchase Commitment [Line Items]
Amended Guaranteed Maximum Price					$ 249,000,000						$ 119,600,000
Increase in Guaranteed Maximum Price				9,000,000
Guaranteed Maximum Construction Costs			14,200,000	258,000,000								20,100,000
Long-term Purchase Commitment, Amount								375,000,000		82,000,000
Long-term Purchase Commitment, Minimum Square Footage of Meeting Space Required							10,000		10,000	10,000
Long-term Purchase Commitment, Minimum Number of Parking Spaces Required									1,600	1,600
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year One										2,000,000
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year Two										3,000,000
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year Three										4,000,000
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year Four										5,000,000
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year Five										6,000,000
Potential Additional Fees Due to Failure to Meet Redevelopment Commitment, Year Eight						2,000,000
Long-term Purchase Commitment, Liquidated Damages, Annual Increase										1,000,000
Long-term Purchase Commitment, Liquidated Damages, Maximum Amount										20,000,000
Future Annual Minimum Rent Amount							4,000,000		4,000,000	4,000,000
Future Annual Minimum Rent, Percentage of Annual Adjusted Gross Receipts								2.50%
Long-term Purchase Commitment, Additional Amount										75,000,000
Self Insurance Reserve	17,400,000	16,500,000
Long-term Contract, Number of Guest Rooms			150
Income Tax Examination, Proposed Adjustment Excluding Interest and Penalties													$ 7,300,000
Minimum Number of Guestrooms to be Invested in During Second Phase									200	200
Income Tax Examination, Year under Examination														2005	2007
Number of Acres Committed to Lease								56
Number of Years in Lease Term								99