Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT (Details Textual)

v3.7.0.1
LONG-TERM DEBT (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended
Feb. 28, 2017
Jan. 30, 2017
Sep. 30, 2013
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Mar. 27, 2013
Mar. 14, 2013
Interest Expense, Debt       $ 132,000 $ 142,000      
Amortization of Financing Costs       $ 149,000 160,000      
Debt Instrument, Interest Rate, Stated Percentage       4.58%        
Interest Rate Swap [Member]                
Derivative, Notional Amount       $ 150,000,000     $ 150,000,000  
Derivative, Floor Interest Rate       0.625%        
Derivative, Fixed Interest Rate       1.645%        
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 stepped up to 2.50 to 1.0 and a maximum leverage ratio, which started at 6.75 to 1.0 and stepped down periodically and is now 5.75 to 1.0. 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       3.58%        
Leverage Ratio, Description       4.98 to 1        
Revolving Credit Facility [Member] | Maximum [Member]                
Leverage Ratio       5.75%        
Revolving Credit Facility [Member] | Minimum [Member]                
Interest Coverage Ratio       2.50%        
Term B Loan [Member]                
Line of Credit Facility, Maximum Borrowing Capacity       $ 258,000,000       $ 300,000,000
Senior Notes, Noncurrent               298,500,000
Interest Expense, Debt       $ 48,000 $ 52,000      
Amortization of Financing Costs $ 18,000 $ 12,000            
Floor Rate On Term Loan       1.00%        
Debt Instrument Interest Additional Interest Above London Inter bank Offered Rate       3.50%        
Debt Instrument Interest Additional Interest Above Base Rate       2.50%        
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       4.88%        
Debt Instrument Interest Additional Interest Above Prime Rate       2.50%        
Debt Instrument, Interest Rate, Stated Percentage       4.78%   4.78%    
Revolver [Member]                
Line of Credit Facility, Maximum Borrowing Capacity       $ 1,200,000       $ 25,000,000
Debt Instrument Interest Additional Interest Above London Inter bank Offered Rate       2.75%        
Debt Instrument Interest Additional Interest Above Base Rate       1.75%        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage       0.375%