Quarterly report pursuant to Section 13 or 15(d)

GOODWILL (Details)

v3.10.0.1
GOODWILL (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Goodwill [Line Items]    
Balance, beginning of period before cumulative loss on impairment $ 28,453 $ 27,642
Beginning Balance, Accumulated loss on impairment (2,029) (2,029)
Balance, beginning of period after cumulative loss on impairment 26,424 25,613
Balance, end of period before cumulative loss on impairment 27,832 28,453
Ending Balance, Accumulated loss on impairment (2,029) (2,029)
Ending period balance 25,803 26,424
Radio Stations [Member]    
Goodwill [Line Items]    
Acquisitions 7 14
Goodwill, Written off Related to Sale of Business Unit (628) 0
Digital Media Entities [Member]    
Goodwill [Line Items]    
Acquisitions 0 810
Broadcast business [Member]    
Goodwill [Line Items]    
Goodwill, Written off Related to Sale of Business Unit $ 0 $ (13)