Note 2 - Acquisitions (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	1 Months Ended			2 Months Ended	1 Months Ended					2 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended		12 Months Ended		1 Months Ended	2 Months Ended		1 Months Ended		12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 16, 2014 Scenario, Forecast [Member] Yellowstone Television, LLC [Member]	Nov. 16, 2014 Scenario, Forecast [Member] Yellowstone Television, LLC [Member]	Oct. 31, 2013 Excalibur [Member] KJCT [Member] Licensing Agreements [Member]	Oct. 31, 2013 Excalibur [Member] KJCT [Member]	Mar. 11, 2014 Excalibur [Member] WQCW [Member]	Nov. 20, 2013 Excalibur [Member] Hoak and Parker [Member]	Oct. 31, 2013 Yellowstone Television, LLC [Member] Retransmission Agreements [Member]	Oct. 31, 2013 Yellowstone Television, LLC [Member] Decaying Advertiser Base [Member]	Oct. 31, 2013 Yellowstone Television, LLC [Member] Other Intangible Assets [Member]	Oct. 31, 2013 Yellowstone Television, LLC [Member]	Dec. 31, 2013 Yellowstone Television, LLC [Member]	Dec. 31, 2013 Yellowstone Television, LLC [Member]	Oct. 31, 2013 KJCT [Member] Non-license Assets [Member]	Dec. 31, 2013 KJCT [Member] Retransmission Agreements [Member]	Oct. 31, 2013 KJCT [Member] Retransmission Agreements [Member]	Dec. 31, 2013 KJCT [Member] Income Leases [Member]	Oct. 31, 2013 KJCT [Member] Income Leases [Member]	Oct. 31, 2013 KJCT [Member]	Dec. 31, 2013 KJCT [Member]	Dec. 31, 2013 WQCW [Member]	Nov. 20, 2013 Hoak and Parker [Member]	Dec. 18, 2013 KEVN-TV [Member]	Dec. 31, 2013 Licensing Agreements [Member]	Oct. 31, 2013 Excalibur [Member]
Note 2 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Gross													$ 10,000,000			$ 4,500,000	$ 7,500,000				$ 23,000,000		$ 10,000,000								$ 5,500,000	$ 335,000,000	$ 7,800,000
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions												1.00%									99.00%
Business Combination, Acquisition Related Costs																					200,000
Derivative, Net Liability Position, Aggregate Fair Value																						9,700,000	9,700,000
Derivative Liabilities, Unamortized Intrinsic Value																						300,000	300,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable																					9,700,000
Business Combination, Consideration Transferred																					32,739,000								12,000,000			37,500,000
Finite-lived Intangible Assets, Fair Value Disclosure																		900,000	600,000	200,000						500,000		100,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life																		1 year 73 days	7 years 36 days	146 days					2 years 109 days		10 years 73 days
Revenues																						2,400,000								400,000
Operating Income (Loss)	23,288,000	24,220,000	21,312,000	15,060,000	58,511,000	41,063,000	33,046,000	20,821,000	83,880,000	153,441,000	75,348,000											700,000								200,000
Finite-lived Intangible Assets Acquired														3,000,000										9,000,000										1,300,000
Payments for (Proceeds from) Derivative Instrument, Investing Activities															500,000
Guarantor Obligations, Current Carrying Value																																			3,000,000
Escrow Deposit Disbursements Related to Property Acquisition																$ 500,000	$ 400,000														$ 500,000		$ 800,000