Quarterly Financial Information (Unaudited) (Details Textual) (USD $)	3 Months Ended				12 Months Ended		3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Pool and Room Renovation [Member]	Sep. 30, 2011 Pool and Room Renovation [Member]
Property, Plant and Equipment [Line Items]
Pre-tax charge recognized							$ 4,700,000	$ 3,500,000
Quarterly Financial Information (Textual) [Abstract]
Casualty loss		5,000,000	6,000,000		1,225,000	42,321,000
Casualty loss, Gross				81,300,000
Insurance proceeds				50,000,000		50,000,000
Preopening costs associated with reopening the affected properties		23,600,000	25,500,000	6,200,000	408,000	55,287,000
Additional compensation cost			2,500,000			2,800,000
One-time, non-cash accrued vacation expense	$ 2,600,000