Quarterly report pursuant to Section 13 or 15(d)

NOTES PAYABLE AND LONG-TERM DEBT (Details Textual)

v3.4.0.3
NOTES PAYABLE AND LONG-TERM DEBT (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended
Sep. 30, 2013
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2014
Mar. 14, 2013
Interest Expense, Debt   $ 142,000 $ 140,000      
Revolving Credit Facility [Member]            
Line of Credit Facility, Covenant Terms   With respect to financial covenants, the credit agreement includes a minimum interest coverage ratio, which started at 1.50 to 1.0 and steps up to 2.50 to 1.0 by 2016 and a maximum leverage ratio, which started at 6.75 to 1.0 and steps down to 5.75 to 1.0 by 2017. The credit agreement also includes other negative covenants that are customary for credit facilities of this type, including covenants that, subject to exceptions described in the credit agreement, restrict the ability of Salem and its subsidiary guarantors        
Interest Coverage Ratio   3.36%     2.50%  
Leverage Ratio, Description   53.6 to 1        
Term B Loan [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 272,400,000       $ 300,000,000
Senior Notes, Noncurrent           298,500,000
Interest Expense, Debt   $ 52,000 46,000      
Floor Rate On Term Loan   1.00%        
Line Of Credit Default Rate Above Applicable Interest Rate   2.00%        
Proceeds from Issuance of Debt   $ 60,000,000        
Debt Instrument, Periodic Payment, Principal $ 750,000          
Debt Instrument, Interest Rate, Effective Percentage   3.44%        
Debt Instrument Interest Additional Interest Above Prime Rate   2.50%        
Debt Instrument Interest Over London Inter bank Offered Rate       3.50%    
Debt Instrument Interest Additional Interest Above London Interbank Offered Rate   3.50%        
Revolver [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 3,000,000       $ 25,000,000
Interest Expense, Debt   $ 18,000 $ 17,000      
Debt Instrument Interest Additional Interest Above Base Rate   2.00%        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.50%        
Debt Instrument Interest Additional Interest Above London Interbank Offered Rate   3.00%