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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Advertising cost        
Advertising $ 54,909us-gaap_AdvertisingExpense $ 55,282us-gaap_AdvertisingExpense $ 48,909us-gaap_AdvertisingExpense  
Cash and Cash Equivalents        
Maximum original maturity period of cash equivalents 3 months      
Cash held at various banking institutions 108,372us-gaap_CashAndCashEquivalentsAtCarryingValue 118,216us-gaap_CashAndCashEquivalentsAtCarryingValue 65,082us-gaap_CashAndCashEquivalentsAtCarryingValue 46,275us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash held in non-interest-bearing accounts 73,300rol_CashHeldInNonInterestBearingAccounts      
Cash held in foreign bank accounts $ 35,065rol_CashAtBankForeign $ 51,012rol_CashAtBankForeign