Note 2 - Acquisitions (Details) (USD $)	6 Months Ended	1 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		0 Months Ended
	Jun. 30, 2014	Jun. 30, 2014 Operating Expense [Member] Hoak Acquisition [Member]	Dec. 31, 2014 Scenario, Forecast [Member] Parker Acquisitions [Member]	Jun. 30, 2014 Retransmission Agreements [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Advertising Contracts [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Advertising Contracts [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Advertising Relationships [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Advertising Relationships [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Off-Market Favorable Lease [Member] 2014 Acquisitions [Member]	Jun. 30, 2014 Off-Market Favorable Lease [Member] 2014 Acquisitions [Member]	Jun. 13, 2014 Hoak Acquisition [Member]	Jun. 30, 2014 Hoak Acquisition [Member]	May 31, 2014 KNDX Acquisition [Member]	Jun. 30, 2014 KNDX Acquisition [Member]	May 31, 2014 KEVN Acquisition [Member]	Jun. 30, 2014 KEVN Acquisition [Member]	Apr. 30, 2014 WQCW Acquisition [Member]	Jun. 30, 2014 WQCW Acquisition [Member]	Jun. 30, 2014 2014 Acquisitions [Member]	Jun. 30, 2014 2014 Acquisitions [Member] Minimum [Member]	Jun. 30, 2014 2014 Acquisitions [Member] Maximum [Member]	Jun. 13, 2014 Parker Acquisitions [Member]
Note 2 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	4		2
Business Acquisition, Percentage of Voting Interests Acquired											100.00%				100.00%
Payments to Acquire Businesses, Gross											$ 298,400,000		$ 7,500,000		$ 8,800,000		$ 5,500,000					$ 5,360,000
Business Combination, Consideration Transferred			6,700,000								290,800,000	298,448,000		7,500,000	7,800,000	8,785,000		5,499,000
Business Combination, Consideration Transferred, Working Capital Adjustment											7,600,000				1,000,000
Number of Television Stations											12
Accounts Receivable, Contractual Amounts in Excess of Fair Value																			200,000
Property, Plant and Equipment, Useful Life																				3 years	40 years
Finite-lived Intangible Assets Acquired				23,000,000		1,400,000		11,500,000		3,900,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				4 years 73 days	1 year		5 years 36 days		8 years 73 days
Goodwill, Acquired During Period	135,718,000																		135,800,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount																			85,700,000
Business Combination, Acquisition Related Costs		4,600,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual												3,300,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax												$ 1,000,000