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Project Development Costs Project Development Costs (Details Textual) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Feb. 06, 2015
Development Costs [Line Items]      
Agreement To Exercise Additional Rights, Expenses Relating to Gaming Facility License $ 2,800,000nyny_AgreementToExerciseAdditionalRightsExpensesRelatingtoGamingFacilityLicense    
Project development costs incurred 2,400,000nyny_ProjectDevelopmentCostsIncurred 1,600,000nyny_ProjectDevelopmentCostsIncurred  
Legal, Construction Manager Costs, Consultants, And Other Professional Services [Member]      
Development Costs [Line Items]      
Project development costs incurred 600,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_LegalConstructionManagerCostsConsultantsAndOtherProfessionalServicesMember
   
Legal Expense [Member]      
Development Costs [Line Items]      
Project development costs incurred 1,100,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_LegalExpenseMember
200,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_LegalExpenseMember
 
Architectural Fees [Member]      
Development Costs [Line Items]      
Project development costs incurred 700,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_ArchitecturalFeesMember
500,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_ArchitecturalFeesMember
 
Professional Services [Member]      
Development Costs [Line Items]      
Project development costs incurred   200,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_ProfessionalServicesMember
 
Agreement Payments [Member]      
Development Costs [Line Items]      
Project development costs incurred   800,000nyny_ProjectDevelopmentCostsIncurred
/ nyny_NatureOfCostAxis
= nyny_AgreementPaymentsMember
 
Common Stock | January 2015 Rights Offering      
Development Costs [Line Items]      
Agreement To Exercise Additional Rights, Proceeds from Offering $ 46,700,000nyny_AgreementToExerciseAdditionalRightsProceedsfromOffering
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= nyny_NonTransferableSubscriptionRightsMember
  $ 49,500,000nyny_AgreementToExerciseAdditionalRightsProceedsfromOffering
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= nyny_NonTransferableSubscriptionRightsMember