XML 18 R48.htm IDEA: XBRL DOCUMENT v2.4.1.9
Basis of Presentation and Summary of Significant Accounting Policies Principles of Consolidation (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Principles of Consolidation [Line Items]    
Customer Loyalty Program Liability, Current $ 11.9us-gaap_CustomerLoyaltyProgramLiabilityCurrent $ 12.9us-gaap_CustomerLoyaltyProgramLiabilityCurrent
MPM Enterprises, LLC [Member]    
Principles of Consolidation [Line Items]    
Equity Method Investment, Ownership Percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ dei_LegalEntityAxis
= stn_MpmEnterprisesLlcMember		  
Other Affiliates [Member]    
Principles of Consolidation [Line Items]    
Equity Method Investment, Ownership Percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_OtherAffiliatesMember