Natural Disasters (Details) (USD $)	6 Months Ended		6 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended		0 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended
	Jun. 30, 2012	May 12, 2011 seats	Jun. 30, 2012 Flood	Dec. 31, 2011 Flood	Jun. 30, 2012 Harlows Casino	Jun. 30, 2012 Harlows Casino	Feb. 24, 2011 Harlows Casino hotel_rooms	Feb. 24, 2011 Harlows Casino Wind	Mar. 31, 2012 Harlows Casino Wind	Jun. 30, 2012 Harlows Casino Wind	Dec. 31, 2011 Harlows Casino Wind	Jun. 30, 2012 Harlows Casino Flood
Business Interruption Loss [Line Items]
Number Of Seats In Entertainment Center		2,600
Insurance Deductible	$ 1,300,000									$ 100,000
Reduction To Property And Equipment Due To Natural Disaster			8,500,000					1,400,000
Repair expenditures	2,000,000							400,000
Insurance Settlements, Partial Settlement Received				3,500,000
Insurance Settlements Receivable									3,400,000			12,000,000
Unusual or Infrequent Item, Net of Insurance Proceeds					(5,003,000)	(6,514,000)			1,500,000			5,000,000
Number Of Hotels Rooms Damaged							61
Preliminary Claim For Damages Incurred								1,000,000
Insurance Settlements Received, Reduction Of Selling And Administrative Expenses Related To The Interruption Of Business											400,000
Casualty Losses					10,497,000	12,342,000
Insurance Recoveries					$ (15,500,000)	$ (18,856,000)