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Note 2 - Acquisitions and Dispositions (Details Textual) - USD ($) |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2015 | Dec. 15, 2014 | Oct. 02, 2014 | Jun. 13, 2014 | Sep. 30, 2015 | Nov. 30, 2014 | Sep. 15, 2014 | May. 31, 2014 | Apr. 30, 2014 | Oct. 31, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Oct. 02, 2014 | Dec. 31, 2013
Cedar Rapids [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |
Odessa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 33,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Twin Falls [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | 17,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Wausau [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | 14,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Presque Isle Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | 10,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Laredo [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
The 2015 Acquisitions [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |
The 2015 Acquisitions [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  |  | 40 years |  |  |
The 2015 Acquisitions [Member] | Retransmission Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  | $ 9,700,000 |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  | 5 years 109 days |  |  |
The 2015 Acquisitions [Member] | Advertising Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  | 9 years 219 days |  |  |
The 2015 Acquisitions [Member] | Income Leases [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  | $ 5,400,000 |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  | 16 years 328 days |  |  |
The 2015 Acquisitions [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  |  | $ 6,500,000 |  |  |
The 2015 Acquisitions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  |  |  |  |  |  |  |  |  |  | $ 48,300,000 |  |  |
Acquired Intangible Assets Measurement Period for Finalization of Preliminary Valuations |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  |  | $ 23,200,000 |  |  |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax |  |  |  |  |  |  |  |  |  |  | 8,600,000 |  |  |
Hoak Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | $ 299,900,000 |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  |  | $ 33,500,000 |  |  |  |  |  |  |  |  |  |
SJL Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  | $ 131,500,000 |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
KEVN Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  | $ 8,800,000 |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |
KNDX Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  | $ 7,500,000 |  |  |  |  |  |
Parker Acquisition [Member] | Allocated to the Parker Broadcasting of Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  | $ 1,700,000 |  |
Parker Acquisition [Member] | Allocated to the Parker Broadcasting of Dakota [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |
Parker Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  |  | $ 6,700,000 |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |
WQCW Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  | $ 5,500,000 |  |  |  |  |
Helena Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  |  |
2014 Acquisition [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |
2014 Acquisition [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  |  |  | 40 years |  |
2014 Acquisition [Member] | Retransmission Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  |  | $ 34,200,000 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  | 4 years 146 days |  |
2014 Acquisition [Member] | Advertising Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  |  | $ 13,100,000 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  | 5 years 182 days |  |
2014 Acquisition [Member] | Income Leases [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  |  | $ 4,100,000 |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  | 8 years 109 days |  |
2014 Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Goodwill, Expected Tax Deductible Amount |  |  |  |  |  |  |  |  |  |  |  | $ 88,600,000 |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  |  |  | 6,200,000 |  |
Accounts Receivable Contractual Amounts in Excess of Fair Value |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |
Yellowstone [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | $ 10,000,000 |  |  |  |  |  |  | $ 23,000,000 |  |  | $ 32,700,000 |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  | $ 200,000 |  |  |  |
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions |  |  |  |  |  |  |  |  |  | 99.00% |  |  |  |
Subsidiary or Equity Method Investee Additional Percentage Ownership from Transaction |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |
KJCT [Member] | Excalibur [Member] | Non-license Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  | $ 3,000,000 |  |  |  |
KJCT [Member] | Excalibur [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for (Proceeds from) Derivative Instrument, Investing Activities |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  | $ 2,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Gains (Losses) on Extinguishment of Debt |  | (200,000) |  |  |  |  |  |  |  |  |  |  |  |
KJCT [Member] | Non-license Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |
KJCT [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  | $ 12,000,000 |  |  |  |
Proceeds from Sale of Machinery and Equipment |  | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  |  |  |  |  |  |  |  | (269,000) |  |
2013 Acquisition [Member] | Retransmission Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 292 days
Finite-lived Intangible Assets, Fair Value Disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,400,000
2013 Acquisition [Member] | Advertising Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years 36 days
Finite-lived Intangible Assets, Fair Value Disclosure |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000
Hoak and SJL [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  |  |  |  |  |  |  | 5,100,000 |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  |  |  |  |  |  | 64,700,000 |  |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax |  |  |  |  |  |  |  |  |  |  |  | 25,800,000 |  |
Helena Montana Disposition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Assets |  |  |  |  | $ (100,000) |  |  |  |  |  |  |  |  |
NBC Affiliate and Television Station KTVH-TV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Assets |  |  |  |  |  |  |  |  |  |  | 900,000 |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  |  |  |  |  | 17,845,000 | 53,455,000 |  |
Gains (Losses) on Extinguishment of Debt |  |  |  |  |  |  |  |  |  |  | 0 | (5,086,000) |  | 0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  |  |  |  |  |  |  | $ (80,000) | $ (623,000) |  | $ (765,000)

X
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- Definition Represents the measurement period over which management expects to continue to obtain information to assist in finalizing the preliminary valuations of intangible assets acquired in business combinations. + References No definition available. + Details
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- Definition Additional percentage of subsidiary's or equity method investee's stock owned by parent from a certain transaction (for example, the exercise and completion of a put and call option agreement). + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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- Definition Fair value portion of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2941-110230 + Details
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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2443-110228 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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- Definition The net cash outflow or inflow from derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments. + References No definition available. + Details
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