STOCKHOLDERS' EQUITY (Details Textual) - USD ($) | Apr. 06, 2015 | Oct. 06, 2014 | Jul. 14, 2013 | Jun. 16, 2015 | Apr. 20, 2015 | Sep. 30, 2014 | Jul. 14, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2009 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation, Total | | | | | | | | $ 1,200,000 | $ 65,000 | $ 2,779,000 | $ 110,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares | | | | | | | | 293,338 | 75,300 | 293,338 | 75,300 | | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | | | | | | | | 12 months 9 days | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period | | | | | | | | 0 | 92,040 | 0 | 92,040 | | | |
Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | | | | | | | | | in equal 50% installments | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | | | | | | | | $ 4,800,000 | | $ 4,800,000 | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | | | 68,680 | | 68,680 | | 56,050 | 109,645 | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | | | | | 33.00% | | | | | | | | | |
Employee Stock Option [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | | | | | | | | | | 0 | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | | | | | | | | $ 2,000,000 | | $ 2,000,000 | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | | | | | | | | | | 12 months 3 days | | | | |
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value1 | | | | | | | | | | $ 1.40 | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period | | | | | | | | | | 0 | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | | | | 3,269,000 | | 3,269,000 | | | | |
Repurchase Program 2013 [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Repurchase Program, Authorized Amount | | | | | | | | $ 3,500,000 | | $ 3,500,000 | | | | |
January Repurchase Program 2013 [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Repurchase Program, Authorized Amount | | | | | | | | 2,000,000 | | 2,000,000 | | | | |
May Repurchase Program 2013 [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Repurchase Program, Authorized Amount | | | | | | | | $ 1,500,000 | | $ 1,500,000 | | | | |
Long Term Incentive Plan [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | | | | | | | | | The grants were effective October 6, 2014, and will vest in three installments, with the first installment of 33% vesting on April 20, 2015. The remaining two installments will vest equally on December 31, 2015 and December 31, 2016. | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | 410,000 | | | | | | | | |
Chief Financial Officer [Member] | Share-based Compensation Award, Tranche One [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | 200,000 | | | | | | | | | |
Chief Financial Officer [Member] | Share-based Compensation Award, Tranche Two [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | | | | 75,000 | | 75,000 | | | | |
Chief Financial Officer [Member] | Share-based Compensation Award, Tranche Three [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | | | | 75,000 | | 75,000 | | | | |
Chief Administrative Officer [Member] | Share-based Compensation Award, Tranche One [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | 75,000 | | | | | | | | | |
Chief Administrative Officer [Member] | Share-based Compensation Award, Tranche Two [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | | | | 75,000 | | 75,000 | | | | |
Chief Administrative Officer [Member] | Share-based Compensation Award, Tranche Three [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number | | | | | | | | 75,000 | | 75,000 | | | | |
Non Executive Directors One [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | 13,736 | | | | | | | | 11,210 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | | $ 50,000 | | | | | | | | $ 50,000 | | |
Non Executive Directors Two [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | 13,736 | | | | | | | | 11,210 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | | $ 50,000 | | | | | | | | $ 50,000 | | |
Non Executive Directors Three [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | 13,736 | | | | | | | | 11,210 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | | $ 50,000 | | | | | | | | $ 50,000 | | |
Non Executive Directors Four [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | 13,736 | | | | | | | | 11,210 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | | $ 50,000 | | | | | | | | $ 50,000 | | |
Non Executive Directors Five [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | 13,736 | | | | | | | | 11,210 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | | $ 50,000 | | | | | | | | $ 50,000 | | |
Executives and LTIP Participants [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | | | | | | | | | Both of the grants vest over a two-year period in equal 50% installments | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | | | | | | | 2,424,000 | | |
Founder and Executive Chairperson [Member] | Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | 456,000 | | | | | | | | | | | | | |
Founder and Executive Chairperson [Member] | Employee Stock Option [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | 293,000 | | | | | | | | | | | | | |
President and Chief Executive Officer [Member] | Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | 913,000 | | | | | | | | | | | | | |
President and Chief Executive Officer [Member] | Employee Stock Option [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | 587,000 | | | | | | | | | | | | | |
Executive Vice President and Chief Financial Officer [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | Class D common stock vesting in equal 112,500 share tranches on December 31, 2015 and December 31, 2016. | | | | | | | | | | | | |
Executive Vice President and Chief Financial Officer [Member] | Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | Class D common stock with 200,000 shares vesting on April 20, 2015 and with the remaining shares vesting in equal 75,000 share tranches on December 31, 2015 and December 31, 2016 | | | | | | | | | | | | |
President Radio Division [Member] | Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | Class D common stock vesting in approximately equal 1/3 tranches on April 20, 2015, December 31, 2015 and December 31, 2016. | | | | | | | | | | | | |
Executive Vice President and Chief Administrative Officer [Member] | Restricted Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights | | Class D common stock vesting in equal 75,000 share tranches on April 20, 2015, December 31, 2015 and December 31, 2016. | | | | | | | | | | | | |
Common Class D [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Repurchased During Period, Shares | | | | | | | | | | 345,293 | | | | |
Stock Repurchased During Period, Value | | | | | | | | | | $ 1,400,000 | | | | |
Repurchase Of Common Stock Price Per Share | | | | | | | | | | $ 4.12 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | | | | | | | | 8,250,000 | | 8,250,000 | | | | |
Common Class D [Member] | Stock Plan 2009 [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | | | | | | | | 7,000,000 | | 7,000,000 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | | | | | | | | | | | | | | 8,250,000 |
Common Class D [Member] | Amended and Restated 2009 Stock Plan [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | | | | | | | | 8,231,230 | | 8,231,230 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee | | | | | | | | | | 1,000,000 | | | | |
Common Class D [Member] | Chief Financial Officer [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | | | | | | | | | | | | 225,000 | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | | | | | | | 350,000 | | |
Common Class D [Member] | Chief Administrative Officer [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | | | | | | | 225,000 | | |
Common Class D [Member] | Non Executive Directors [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | 50,000 | | | | 21,929 | | | | | | | |
Common Class D [Member] | President Radio Division [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | | | | | | | | | | 70,000 | | |
Class A and D Common Stock [Member] | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | | | | | | | | | | | | |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | | | | | | | | $ 57,000 | | $ 57,000 | | | | |