Note 2 - Acquisitions (Details) (USD $)	9 Months Ended	4 Months Ended			9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	4 Months Ended	0 Months Ended		4 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Operating Expense [Member] Hoak Acquisition [Member]	Sep. 25, 2014 KAQY Acquisition [Member] Parker Acquisitions [Member]	Sep. 25, 2014 KXJB Acquisition [Member] Parker Acquisitions [Member]	Sep. 30, 2014 Retransmission Agreements [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Advertising Contracts [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Advertising Contracts [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Advertising Relationships [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Advertising Relationships [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Off-Market Favorable Lease [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Off-Market Favorable Lease [Member] 2014 Acquisitions [Member]	Sep. 25, 2014 Parker Acquisitions [Member]	Sep. 15, 2014 WJRT Acquisition, Inc. and WTVG Acquisition, Inc. [Member]	Jun. 13, 2014 Hoak Acquisition [Member]	Sep. 30, 2014 Hoak Acquisition [Member]	Sep. 30, 2014 Hoak Acquisition [Member]	May 31, 2014 KNDX Acquisition [Member]	Sep. 30, 2014 KNDX Acquisition [Member]	May 31, 2014 KEVN Acquisition [Member]	Sep. 30, 2014 KEVN Acquisition [Member]	Apr. 30, 2014 WQCW Acquisition [Member]	Sep. 30, 2014 WQCW Acquisition [Member]	Sep. 30, 2014 2014 Acquisitions [Member] Minimum [Member]	Sep. 30, 2014 2014 Acquisitions [Member] Maximum [Member]	Sep. 30, 2014 2014 Acquisitions [Member]
Note 2 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired	6											2
Business Combination, Consideration Transferred			$ 1,800,000									$ 6,700,000	$ 128,000,000	$ 290,800,000		$ 299,770,000		$ 7,500,000	$ 7,800,000	$ 8,785,000		$ 5,499,000
Payments to Acquire Businesses, Gross												6,000,000	131,500,000	299,800,000			7,500,000		8,800,000		5,500,000
Business Combination, Contingent Consideration, Liability	13,700,000			700,000																					13,700,000
Business Combination, Consideration Transferred, Working Capital Adjustment													3,500,000	9,000,000					1,000,000
Business Acquisition, Percentage of Voting Interests Acquired														100.00%					100.00%
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					32,000,000		2,000,000		13,000,000		4,100,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					4 years 146 days	255 days		5 years 6 months		8 years 36 days
Goodwill, Acquired During Period	187,586,000																								187,600,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount																									86,600,000
Business Combination, Acquisition Related Costs		5,100,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual															25,000,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax																$ 9,400,000