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11. LONG-TERM DEBT (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Long-term Debt, Description [Abstract]      
Line of Credit Facility, Maximum Borrowing Capacity $ 75us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity   $ 70us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Interest Rate at Period End 0.25%us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd    
Line of Credit Facility, Interest Rate During Period 1.25%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod    
Libor_Loan 32.0rcky_Libor_Loans_Under_Line_of_Credit 35.0rcky_Libor_Loans_Under_Line_of_Credit 34.0rcky_Libor_Loans_Under_Line_of_Credit
Long-term Line of Credit 36.7us-gaap_LineOfCredit    
Line of Credit Facility, Current Borrowing Capacity $ 74.3us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity