Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT (Details Textual)

v3.7.0.1
LONG-TERM DEBT (Details Textual) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 30, 2016
Nov. 30, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 17, 2016
Jan. 30, 2015
Sep. 30, 2013
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Mar. 27, 2013
Mar. 14, 2013
Interest Expense, Debt               $ 600,000 $ 600,000      
Amortization of Financing Costs               631,000 628,000 $ 643,000    
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 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               3.57%        
Leverage Ratio, Description               4.96 to 1        
Leverage Ratio               6.00%        
Term B Loan [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity               $ 263,000,000       $ 300,000,000
Senior Notes, Noncurrent                       298,500,000
Interest Expense, Debt               $ 200,000 $ 200,000      
Amortization of Financing Costs $ 33,000 $ 6,900 $ 14,000 $ 3,400 $ 6,700 $ 27,000            
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               5.08%        
Debt Instrument, Interest Rate, Stated Percentage               4.78% 4.78%      
Revolver [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity               $ 500,000       $ 25,000,000
Amortization of Financing Costs               $ 100,000 $ 100,000      
Debt Instrument Interest Additional Interest Above London Inter bank Offered Rate               3.00%        
Debt Instrument Interest Additional Interest Above Base Rate               2.00%        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage               0.50%        
Debt Instrument, Interest Rate, Stated Percentage               4.58%