Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Changes in Gross Amount of Unrecognized Tax Benefits) (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Summary of Changes in Gross Amount of Unrecognized Tax Benefits) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Beginning balance $ 916salm_UnrecognizedTaxBenefitsGross
Additions based on tax positions related to the current year   
Additions based on tax positions related to prior years   
Reductions related to tax positions of prior years   
Decrease due to statute expirations (405)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Related interest and penalties, net of federal tax benefits (3)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Ending balance $ 508salm_UnrecognizedTaxBenefitsGross