SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION (Additional Information) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 Employees	Dec. 31, 2011	Dec. 31, 2010
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 62,610,000	$ 272,000
Advertising
Advertising expense	2,300,000	2,400,000	800,000
Certain Risks and Uncertainties
Number of employees	1,165
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member] | Unionized Employees Concentration Risk [Member]
Certain Risks and Uncertainties
Number of employees	733
Concentration risk percentage	62.90%
Buildings and Improvements [Member] | Minimum [Member]
Property and Equipment
Estimated useful lives	7 years
Buildings and Improvements [Member] | Maximum [Member]
Property and Equipment
Estimated useful lives	40 years
Land Improvements [Member] | Minimum [Member]
Property and Equipment
Estimated useful lives	15 years
Land Improvements [Member] | Maximum [Member]
Property and Equipment
Estimated useful lives	20 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Property and Equipment
Estimated useful lives	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Property and Equipment
Estimated useful lives	7 years
Held for Benefit of State of Nevada Workers Compensation Division [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	225,000	272,000
Escrow Account Deposit for Indemnification Obligation [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	60,100,000
Funds Used as Collateral for Debt Obligations [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 2,280,000