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Note 11 - Subsequent Events (Details Textual) - USD ($) |  |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 07, 2017 | Feb. 06, 2017 | Feb. 01, 2017 | Jan. 17, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Feb. 28, 2017
Business Combination, Consideration Transferred |  |  |  |  |  |  | $ 473,074,000 |  |  |
Goodwill |  |  |  |  |  |  | 485,318,000 | $ 423,236,000 | $ 374,390,000 |
Long-term Debt, Gross |  |  |  |  |  |  | 1,781,438,000 |  |  |
Gain (Loss) on Extinguishment of Debt |  |  |  |  |  |  | $ (31,987,000) |  | $ (5,086,000) |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Quarterly Principal Payment | $ 1,400,000 |  |  |  |  |  |  |  |  |
Scenario, Forecast [Member] | The 2017 Senior Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt |  |  |  |  |  | $ (4,500,000) |  |  |  |
FCC [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |
Proceeds from Reverse Auction for Broadcast Spectrum |  | $ 90,800,000 |  |  |  |  |  |  |  |
Variable Interest Entity, Primary Beneficiary [Member] | GME [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity, Financial or Other Support, Amount |  |  |  | $ 106,000,000 |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Debt Agreement, Maximum Borrowing Capacity | 656,400,000 |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross | $ 3,000,000 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 100,000,000 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread Used to Define Base Rate | 1.00% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread Used to Define Base Rate | 0.50% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross | $ 556,400,000 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate if Leverage Ratio is Less Than or Equal to 5.25 | $ 2.25 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] | Base Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate if Leverage Ratio is Less Than or Equal to 5.25 | $ 1.25 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Minimum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.375% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Minimum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Minimum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Base Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Maximum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.50% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Maximum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Maximum [Member] | The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Base Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |  |  |  |  |  |  |
Fairbanks Acquistion [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 8,000,000 |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | $ 251,000
Green Bay Acquisition and Davenport Acquisition [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | 269,900,000 |  |  |  |  |  |
2017 Acquisitions [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | 89.60 |  |  |  |  |  |
2017 Acquisitions [Member] | Subsequent Event [Member] | Retransmission Agreements [Member] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  |  | 14 |  |  |  |  |  |
2017 Acquisitions [Member] | Subsequent Event [Member] | Income Leases [Member] |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  |  | $ 1.50 |  |  |  |  |  |
2017 Acquisitions [Member] | Subsequent Event [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 3 years |  |  |  |  |  |
2017 Acquisitions [Member] | Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 40 years |  |  |  |  |  |
Bangor Acquisition and Gainesville Acquisition [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  | $ 85,000,000 |  |  |  |  |

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