Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS AND RECENT TRANSACTIONS (Details Textual)

v3.7.0.1
ACQUISITIONS AND RECENT TRANSACTIONS (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 08, 2017
Mar. 14, 2017
Mar. 01, 2017
Jan. 06, 2017
Jun. 30, 2017
May 30, 2017
May 19, 2017
Mar. 31, 2017
Feb. 28, 2017
Jan. 30, 2017
Jan. 16, 2017
Jul. 26, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 28, 2017
Mar. 15, 2017
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                    
Gains (Losses) on Extinguishment of Debt, Total             $ 2,100,000           $ (2,734,000) $ (5,000) $ (2,775,000) $ (14,000)    
Amortization of Financing Costs                 $ 18,000       $ 9,000 $ 17,000 357,000 318,000    
Dividends Payable, Date Declared         Jun. 01, 2017     Mar. 09, 2017                    
Common Stock, Dividends, Per Share, Declared         $ 0.0650     $ 0.0650                    
Payments of Ordinary Dividends, Common Stock         $ 1,700,000     $ 1,700,000             3,388,000 3,321,000    
Dividends Payable, Date to be Paid         Jun. 30, 2017     Mar. 30, 2017                    
Dividends Payable, Date of Record         Jun. 16, 2017     Mar. 20, 2017                    
Business Combination, Consideration Transferred, Total $ 65,000                           485,000      
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%   4.58%      
Proceeds from Collection of Lease Receivables         $ 600,000                          
Business Combination Recognized Identifiable Assets Increase or Decrease                             $ 42,000 $ 100,000    
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         10,000,000   $ 4,500,000           $ 10,000,000   10,000,000      
Debt Instrument, Term             5 years                      
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   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               1,200,000   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  
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   $ 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
FM translator Permit,Eaglemount,Washington Assets Purchase [Member]                                    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                    
Business Combination, Consideration Transferred, Total                       $ 40,000