| 
           ACQUISITIONS AND RECENT TRANSACTIONS (Summary of Total Acquisition Consideration) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | ||
|---|---|---|---|
| 
           Dec. 31, 2014 
         | 
        
           Dec. 31, 2013 
         | 
        
           Dec. 31, 2012 
         | 
      |
| ACQUISITIONS AND RECENT TRANSACTIONS [Abstract] | |||
| Cash payments | $ 12,682salm_BusinessAcquisitionInitialPurchasePrice | $ 7,477salm_BusinessAcquisitionInitialPurchasePrice | |
| Escrow deposits paid in prior years | 1,345salm_BusinessAcquisitionEscrowDepositsPreviouslyPaid | ||
| Deferred cash payments made related to prior year acquisition | (600)salm_BusinessAcquisitionDeferredCashPaymentsRelatedToPriorAcquisition | ||
| Present value of deferred cash payments (due 2015) | 893salm_BusinessAcquisitionDeferredCashPaymentAfterOneYear | ||
| Present value of deferred cash payments (due 2016) | 2,289salm_BusinessAcquisitionDeferredCashPaymentAfterTwoYears | ||
| Present value of estimated fair value of contingent earn-out consideration | 2,047salm_NetPresentValueOfContingentConsideration | 616salm_NetPresentValueOfContingentConsideration | |
| Deferred cash payments (due 2014) | 300salm_BusinessAcquisitionDeferredCashPayment | ||
| Early repayment of principal on seller-financed note due 2014 | 2,000salm_BusinessAcquisitionCashPaidInCurrentPeriodDueInFuturePeriodForPriorPeriodAcquisition | ||
| Net present value of deferred advertising credits | 2,427salm_BusinessAcquisitionAdvertisingCreditsPayable | ||
| Total purchase price consideration | $ 18,656salm_BusinessAcquisitionCostOfAcquiredEntityCashPaidAndDue | $ 12,820salm_BusinessAcquisitionCostOfAcquiredEntityCashPaidAndDue | |
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- Definition 
          Amount of liability associated with future advertising revenues granted as future consideration in a business acquisition. No definition available. 
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- Definition 
          Business Acquisition Cash Paid In Current Period Due In Future Period For Prior Period Acquisition. No definition available. 
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- Definition 
          Business Acquisition Cost Of Acquired Entity Cash Paid And Due. No definition available. 
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- Definition 
          Business Acquisition Deferred Cash Payment. No definition available. 
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- Definition 
          Business Acquisition Deferred Cash Payment After One Year. No definition available. 
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- Definition 
          Business Acquisition Deferred Cash Payment After Two Years. No definition available. 
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- Definition 
          Business acquisition deferred cash payments related to prior acquisition. No definition available. 
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- Definition 
          Business acquisition escrow deposits previously paid. No definition available. 
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- Definition 
          The cash outlay to acquire a business recognized as of the acquisition date. No definition available. 
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- Definition 
          Net Present Value Of Contingent Consideration. No definition available. 
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- Details 
          
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