ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	May 09, 2019	May 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets Held-for-sale, at Carrying Value1 [Abstract]
Assets Held-for-sale, at Carrying Value						$ 2,200	$ 1,100	$ 19,600
ProceedsFromSaleOfLandHeldForUse		$ 24,500
Gain Loss On Sale Of Properties				$ 4,500
Summary of the categories of property and equipment
Property Plant And Equipment Net	$ 344,951			344,951				317,030
IntangibleAssetsGrossExcludingGoodwillAbstract
Gain on sale of assets				4,500
Net Assets Held for Sale	3,307			3,307				19,603
Goodwill	536,687			536,687				539,469	$ 862,000
IntangibleAssetsNetIncludingGoodwill	805			805				0
IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Revenues	380,665		$ 372,124	689,670	$ 672,684
TBA income	0		1,180	0	1,595
Income before taxes	0		1,180	0	1,595
Tax Expense attributable to Discontinued Operations	0		336	0	423
Income from Discontinued Operations, Net of Tax	0		$ 844	0	$ 1,172
Cumulus Transaction [Member]
Assets Held-for-sale, at Carrying Value1 [Abstract]
Gain Loss On Sale Of Properties				(1,800)
IntangibleAssetsGrossExcludingGoodwillAbstract
Gain on sale of assets				(1,800)
Land and Land Improvements [Member]
Summary of the categories of property and equipment
Property Plant And Equipment Net	1,627			1,627				2,645
Building [Member]
Summary of the categories of property and equipment
Property Plant And Equipment Net	814			814				1,053
Equipment [Member]
Summary of the categories of property and equipment
Property Plant And Equipment Net	61			61				15,905
Property Plant and Equipment Net Member [Member]
Summary of the categories of property and equipment
Property Plant And Equipment Net	2,502			2,502				19,603
Radio Broadcasting Licences [Member]
IntangibleAssetsGrossExcludingGoodwillAbstract
Radio broadcasting licenses	$ 805			$ 805				$ 0