Annual report pursuant to Section 13 and 15(d)

DEFINED CONTRIBUTION PLAN (Details)

v2.4.1.9
DEFINED CONTRIBUTION PLAN (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Defined Contribution Benefit Plans [Line Items]      
Maximum employee contribution to defined contribution benefit plans 60.00%salm_DefinedContributionPlanMaximumEmployeeContributionAsPercentageOfBaseSalary    
Maximum company match of participant contribution of eligible compensation per pay period 6.00%salm_MaximumCompanyMatchOfParticipantContributionOfEligibleCompensation    
Define contribution plan, contribution $ 1.7us-gaap_DefinedBenefitPlanContributionsByEmployer $ 1.4us-gaap_DefinedBenefitPlanContributionsByEmployer $ 1.3us-gaap_DefinedBenefitPlanContributionsByEmployer
After January 1, 2012 [Member]      
Defined Contribution Benefit Plans [Line Items]      
Maximum employee contribution to defined contribution benefit plans 50.00%salm_DefinedContributionPlanMaximumEmployeeContributionAsPercentageOfBaseSalary
/ salm_PeriodAxis
= salm_TwoThousandTwelveMember 		   
Employer matching contribution to employee contribution percentage 5.00%salm_DefinedContributionPlanEmployerMatchingContributionToEmployeeContribution
/ salm_PeriodAxis
= salm_TwoThousandTwelveMember 		   
First 3 Percent of Each Participant's Contributions [Member]      
Defined Contribution Benefit Plans [Line Items]      
Employer matching contribution to employee contribution percentage 50.00%salm_DefinedContributionPlanEmployerMatchingContributionToEmployeeContribution
/ us-gaap_PlanNameAxis
= salm_FirstThreePercentOfEachParticipantsContributionsMember 		   
Employee contribution percentage of eligible compensation 3.00%salm_DefinedContributionPlanEmployeeContributionsPercentageOfEligibleCompensation
/ us-gaap_PlanNameAxis
= salm_FirstThreePercentOfEachParticipantsContributionsMember 		   
Second 3 Percent of Each Participant's Contributions [Member]      
Defined Contribution Benefit Plans [Line Items]      
Employer matching contribution to employee contribution percentage 25.00%salm_DefinedContributionPlanEmployerMatchingContributionToEmployeeContribution
/ us-gaap_PlanNameAxis
= salm_SecondThreePercentOfEachParticipantsContributionsMember 		   
Employee contribution percentage of eligible compensation 3.00%salm_DefinedContributionPlanEmployeeContributionsPercentageOfEligibleCompensation
/ us-gaap_PlanNameAxis
= salm_SecondThreePercentOfEachParticipantsContributionsMember