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           CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | ||
|---|---|---|---|
| 
           Dec. 31, 2014 
         | 
        
           Dec. 31, 2013 
         | 
        
           Dec. 31, 2012 
         | 
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| CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract] | |||
| Debt, interest rate | 9.625%us-gaap_DebtInstrumentInterestRateStatedPercentage | 9.625%us-gaap_DebtInstrumentInterestRateStatedPercentage | 9.625%us-gaap_DebtInstrumentInterestRateStatedPercentage | 
| Cash paid for interest, capitalized interest paid to related parties | $ 0salm_InterestPaidToRelatedParty | $ 296salm_InterestPaidToRelatedParty | $ 322salm_InterestPaidToRelatedParty | 
| X | ||||||||||
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- Definition 
          The amount of cash paid for interest during the period to related parties. No definition available. 
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| X | ||||||||||
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- Definition 
          Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Details 
          
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