Asset Acquisitions (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 IP Casino Resort Spa seat room game establishment	Jun. 30, 2012 IP Casino Resort Spa seat room game establishment	Dec. 31, 2011 IP Casino Resort Spa	Oct. 04, 2011 IP Casino Resort Spa	Jun. 30, 2012 Development Agreement	Dec. 31, 2011 Development Agreement	Sep. 30, 2011 Development Agreement	Sep. 30, 2011 Minimum Development Agreement	Sep. 30, 2011 Maximum Development Agreement	Jun. 30, 2012 Casino IP Casino Resort Spa sqft	Jun. 30, 2012 Convention and Meeting Space IP Casino Resort Spa sqft
Business Acquisition [Line Items]
Bargain purchase gain							$ 4,600,000
Number of hotel rooms					1,100	1,100
Square footage														70,000	73,000
Number of slot machines					1,900	1,900
Number of table games					62	62
Theater capacity					1,400	1,400
Number of lounges and bars					6	6
Number of restaurants					8	8
Contingent consideration, potential cash payment					44,000,000	44,000,000
Capital expenditures					8,500,000	11,700,000
IP Casino Spa Condensed Consolidating Financial Information [Abstract]
Net revenues	615,222,000	574,403,000	1,248,305,000	1,139,349,000	47,339,000	96,350,000
Operating income	58,239,000	61,990,000	134,821,000	110,094,000	6,626,000	14,465,000
Assets acquired (at initial fair value):
Intangible value of Development Agreement									21,373,000	21,373,000
Note receivable from Tribe (at present value)									3,663,000	3,077,000
Purchase price								280,600,000	25,036,000	24,450,000	24,500,000
Licensing fee, percent of gross revenues									5.00%
Licensing fee, term of agreement									7 years
Unrecorded commitment to reimburse pre-development costs incurred by seller	4,500,000		4,500,000
Obligation to fund pre-development costs, annual amount												1,000,000	2,000,000
Total Capital Expenditures to Date					$ 13,200,000	$ 13,200,000