COMMITMENTS AND CONTINGENCIES: (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended			0 Months Ended		0 Months Ended	1 Months Ended
	Jun. 30, 2014	Mar. 31, 2014 item	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jul. 23, 2014 5.625% Senior Unsecured Notes, due 2024 Subsequent Event	Jul. 31, 2014 Perpetual Corporation and Charleston Television, LLC Subsequent Event station	Jul. 31, 2014 Perpetual Corporation and Charleston Television, LLC 5.625% Senior Unsecured Notes, due 2024 Subsequent Event	Jul. 31, 2014 Cunningham Perpetual Corporation and Charleston Television, LLC Subsequent Event market	Sep. 30, 2013 Pending acquisition agreement New Age Media Scenario forecast market station
COMMITMENTS AND CONTINGENCIES
Percentage of sale as per joint sales agreements to become owner of station		15.00%
Minimum number of waivers		1
Period to amend or terminate current ownership of station to fall in new rule, as per FCC, for ownership of station		2 years
Revenue earned from JSAs arrangements, which are eliminated in consolidation	$ 11.5		$ 8.3	$ 22.1	$ 15.1
Cash paid							985.0
Working capital adjustment							53.4
Interest rate (as a percent)						5.625%		5.625%
Purchase price									$ 14.0	$ 90.0
Number of television stations owned							9			8
Number of markets									3	3