Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS AND RECENT TRANSACTIONS (Details Textual)

v3.8.0.1
ACQUISITIONS AND RECENT TRANSACTIONS (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2018
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Mar. 23, 2018
Mar. 01, 2018
Jan. 03, 2018
Dec. 01, 2017
Aug. 01, 2017
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Common Stock, Dividends, Per Share, Declared $ 0.0650                
Payments of Ordinary Dividends, Common Stock   $ 1,701,000 $ 1,691,000            
Payments to Acquire Businesses, Gross   0 $ 245,000            
WQVN-AM [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Agreement to Sell Assets in Cash               $ 3,500,000  
Gain (Loss) on Disposition of Assets for Financial Service Operations       $ 4,700,000          
KZTS-AM [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Agreement to Sell Assets in Cash         $ 200,000        
KDXE-FM [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Agreement to Sell Assets in Cash           $ 1,100,000      
WBIX-AM [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Agreement to Sell Assets in Cash             $ 700,000    
Time Brokerage Agreement [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Payments to Acquire Businesses, Gross   1,200,000              
License Fee Payable   $ 100,000              
Hillcrest Media Group Inc [Member]                  
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue                 $ 1.0