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 9 Months Ended 36 Months Ended
Aug. 09, 2017
Jul. 06, 2017
Jun. 08, 2017
Mar. 14, 2017
Mar. 01, 2017
Jan. 06, 2017
Sep. 15, 2017
Aug. 31, 2017
Jun. 30, 2017
May 30, 2017
May 19, 2017
Mar. 31, 2017
Mar. 24, 2017
Feb. 28, 2017
Jan. 30, 2017
Jan. 16, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Jun. 30, 2017
Jul. 24, 2017
Jun. 28, 2017
Mar. 15, 2017
Dec. 31, 2016
Dec. 31, 2015
Apr. 01, 2015
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Gains (Losses) on Extinguishment of Debt, Total                     $ 600,000           $ 0 $ (18,000) $ (2,775,000) $ (32,000)              
Amortization of Financing Costs                           $ 18,000         645,000 475,000              
Dividends Payable, Date Declared                 Sep. 12, 2017                                    
Common Stock, Dividends, Per Share, Declared                 $ 0.0650     $ 0.0650         $ 0.0650                    
Payments of Ordinary Dividends, Common Stock                 $ 1,700,000     $ 1,700,000         $ 1,700,000   5,089,000 5,000,000              
Dividends Payable, Date to be Paid                 Sep. 29, 2017                                    
Dividends Payable, Date of Record                 Sep. 22, 2017                                    
Business Combination, Consideration Transferred, Total     $ 65,000                               3,423,000                
Goodwill                                 $ 26,436,000   26,436,000           $ 25,613,000 $ 24,563,000  
Proceeds from Sale of Intangible Assets                   $ 10,000                 $ 1,900,000                
Gain (Loss) on Disposition of Intangible Assets                   $ 56,000                                  
Debt Instrument, Interest Rate, Stated Percentage                                 4.58%   4.58%                
Proceeds from Collection of Lease Receivables                                         $ 600,000            
Business Combination Recognized Identifiable Assets Increase or Decrease                                     $ 100,000 $ 300,000              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                                     211,658                
Proceeds of Escrow Deposit Under Agreement To Sell               $ 1,000,000                                      
Restricted Stock [Member] | Executive [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 33,066                                                    
Restricted Stock [Member] | Management [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                         178,592                            
Standby Letters of Credit [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Line of Credit Facility, Maximum Borrowing Capacity                     5,000,000                                
Senior Secured Debt [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Debt Instrument, Face Amount                     $ 255,000,000                                
Debt Instrument, Interest Rate, Stated Percentage                     6.75%                                
Debt Instrument expiration Period                     2024                                
Asset-Based Revoloving Credit Facility [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Debt Instrument, Face Amount                     $ 30,000,000                                
Line of Credit Facility, Maximum Borrowing Capacity                     4,500,000           $ 6,600,000   $ 6,600,000                
Revolver [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Payments for Loans                     4,100,000                                
Gains (Losses) on Extinguishment of Debt, Total                     56,000                                
Long-term Line of Credit, Noncurrent                     25,000,000                                
Term B Loan [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Payments for Loans                     258,000,000     3,000,000 $ 2,000,000                        
Debt Instrument, Face Amount                           300,000,000                          
Gains (Losses) on Extinguishment of Debt, Total                     1,500,000     $ 6,200 4,500                        
Amortization of Financing Costs                             $ 12,000                        
Line of Credit Facility, Maximum Borrowing Capacity                                 $ 300,000,000   300,000,000                
Time Brokerage Agreement [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Liabilities Arising from Contingencies, Amount Recognized                                                     $ 1,200,000
Swingline Loans [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Line of Credit Facility, Maximum Borrowing Capacity                     $ 7,500,000                                
FM Translator construction permit, Quartz Site, Arizona (asset purchase) [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total       $ 20,000                             20,000                
FM Translator construction permit, Roseburg, Oregon (asset purchase) [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total         $ 45,000                           45,000                
FM Translator, Astoria, Oregon (asset purchase) [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total                               $ 33,000     33,000                
FM Translator construction permit, Mohave Valley, Arizona (asset purchase) [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total           $ 20,000                         $ 20,000                
FM translator in Festus, Missouri [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Liabilities Arising from Contingencies, Amount Recognized                                           $ 40,000 $ 40,000        
Portuguese Bible mobile application Assets Purchase [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total     65,000                                                
Business Combination, Contingent Consideration, Liability, Current     20,000                                                
Estimated Contingent Earn-out Consideration     $ 16,500           $ 20,000                       $ 20,000            
Prayers-For-Special-Help.com [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total                                               $ 200,000      
Business Acquisition Installments Payable                                               $ 15,000      
Radio Station WSPZ-AM [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total             $ 1,500,000                                        
Goodwill             13,000                                        
TeacherTube.com Website [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total               1,100,000                                      
Goodwill               400,000                                      
Intelligence Report Newsletter [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Goodwill               400,000                                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total               2,500,000                                      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Current               $ 2,900,000                                      
TradersCrux.com Website [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total   $ 300,000                                                  
Goodwill   900                                                  
Business Combination, Contingent Consideration, Liability, Current   100,000                                                  
Estimated Contingent Earn-out Consideration   $ 18,750                                                  
WSPZ-AM in Bethesda, Maryland Assets purchase [Member]                                                      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                                      
Business Combination, Consideration Transferred, Total             $ 600,000