Cappelli Litigation and Sullivan County Planned Casino and Resort Development (Details) (USD $)			0 Months Ended				0 Months Ended				0 Months Ended			0 Months Ended	6 Months Ended	0 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Jun. 18, 2010 Cappelli Settlement [Member]	Dec. 31, 2009 Cappelli Settlement [Member]	Jun. 18, 2010 Concord Resort [Member] Cappelli Settlement [Member] years	Dec. 31, 2009 Concord Resort [Member] Cappelli Settlement [Member]	Dec. 07, 2011 Concord Resort [Member] Sullivan County Planned Casino and Resort [Member]	Jun. 18, 2010 Golf Courses [Member] Cappelli Settlement [Member] lease_extension years properties	Jun. 18, 2010 Racino Parcel [Member] Cappelli Settlement [Member] acres years	Jun. 18, 2010 Concord Property, Ground Lease [Member] Cappelli Settlement [Member]	Jun. 18, 2010 KBC Concord LLC [Member] Cappelli Settlement [Member] loans	Jun. 18, 2010 KBC Concord LLC [Member] Concord Resort [Member] Cappelli Settlement [Member]	Jun. 18, 2010 Union Labor Life Insurance Company (ILLICO) [Member] Cappelli Settlement [Member]	Jun. 18, 2010 New Roc [Member]	Jun. 17, 2010 New Roc [Member]	Jun. 18, 2010 New Roc [Member] Cappelli Settlement [Member]	Jun. 18, 2010 New Roc [Member] City Center [Member] Cappelli Settlement [Member]	Dec. 21, 2011 Empire Resorts, Inc [Member] Concord Resort [Member] M acres
Loss Contingencies [Line Items]
Carrying value of extinguished mortgage note receivable related to Concord resort				$ (131,175,000)		$ (131,200,000)
Option to purchase subsidiary holding resort property, term in years					2
Purchase price of subsidiary holding resort property					143,000,000
Interest rate on purchase price of subsidiary holding resort property					6.00%
Right of first refusal with respect to purchasing subsidiary holding resort property, term in years					2
Contigent agreement to lease golf courses, number of golf courses								2
Initial term of lease (in years)								10
Number of lease extensions								5
Term of lease extension (in years)								5
Annual lease payment								1.00	200,000
Right to purchase parcel, number of acres									51
Right to lease property with option to purchase, term (in years)									5
Purchase option nominal consideration									(1.00)
Fair value of Concord resort land received	2,366,525,000	2,514,115,000	180,000,000
Fair value of option granted for purchase for Concord resort (included in non-controlling interest)			(27,785,000)		(27,800,000)
Capital lease obligation assumed related to Concord resort			(9,215,000)							(9,200,000)
Number of promissory notes transferred											3
Promissary notes principle amount	0	0									30,000,000					20,000,000
Provision for loan losses											28,000,000
Due from related parties											15,000,000
Percent of available cash from minority interest in casino project												50.00%
Fair value of cash flow rights in Concord casino			463,000									463,000
Committment to acquire participation loan, loan amount													30,000,000
Conditional receipt of equity investments, amount													100,000,000
Fair value of New Roc non-controlling interest received			2,452,000													2,500,000
Notes receivable forgiven, net of loan loss reserves			(2,000,000)
Deconsolidation of ownership interests in City Center			(7,385,000)														(7,400,000)
Transferred partnership ownership interest percentage														100.00%	71.40%	100.00%
Cash paid at closing for interests acquired, equipment and payment of property obligations			(3,702,000)													(3,700,000)
Settlement closing costs and other expenses, including land transfer taxes			(1,649,000)													(1,600,000)
Net gain on settlement (included in other income)			4,000
Declaratory judgment, damages sought, value							800,000,000
Number of acres covered by option to lease agreement of the Concord resort property																		190
Lease option agreement period of the Concord resort property (in months)																		6
Lease option agreement payment of the Concord property																		750,000
Lease option agreement, length of successive period of months for extension (in months)																		6
Additional lease option agreement payments for option extensions of Concord property																		$ 750,000