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Note 13 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 5 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 02, 2019 | Feb. 07, 2017 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2016 | Feb. 22, 2019 | Dec. 31, 2017
Business Combination, Consideration Transferred, Total |  |  |  |  | $ 473,074 |  |
Long-term Debt, Gross |  |  |  | $ 2,570,026 |  |  |
The 2019 Senior Credit Facility [Member] |  |  |  |  |  |  |
Debt Issuance Costs, Net, Total |  |  |  | 3,200 |  |  |
The 2017 Senior Credit Facility [Member] |  |  |  |  |  |  |
Debt Agreement, Maximum Borrowing Capacity |  |  |  | 695,000 |  |  |
Long-term Debt, Gross |  |  |  | 595,026 |  |  | $ 635,234
Debt Issuance Costs, Net, Total |  |  |  | 9,261 |  |  | $ 11,777
The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 100,000 |  | 100,000 |  |  |
The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 0.375% |  |  |  |  |
The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 0.50% |  |  |  |  |
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% |  |  |  |  |
The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.50% |  |  |  |  |
The 2017 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 0.50% |  |  |  |  |
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% |  |  |  |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |  |  |  |
Long-term Debt, Gross |  | $ 556,400 |  | $ 595,000 |  |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.25% |  |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] | Base Rate [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.25% |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |
Long-term Debt, Gross | $ 3,970,026 |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] |  |  |  |  |  |  |
Debt Agreement, Maximum Borrowing Capacity | 2,200,000 |  |  |  |  |  |
Long-term Debt, Gross | 1,995,026 |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 200,000 |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.375% |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.50% |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |
Debt Instrument, Basis Spread Used to Define Base Rate | 1.00% |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Base Rate [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |  |  |  |  |
Subsequent Event [Member] | The 2019 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 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] |  |  |  |  |  |  |
Long-term Debt, Gross | $ 1,400,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  |  |  | 5.00% |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |
Subsequent Event [Member] | The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] | Base Rate [Member] |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |  |  |  |  |
Subsequent Event [Member] | Series A Perpetual Preferred Stock [Member] |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share | $ 1,000 |  |  |  |  |  |
Preferred Stock, Dividend Rate, Cash, Percentage | 8.00% |  |  |  |  |  |
Preferred Stock, Dividend Rate, Additional Preferred Stock, Percentage | 8.50% |  |  |  |  |  |
Raycom [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total | $ 3,660,000 |  |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 2,840,000 |  |  |  |  |  |
Raycom [Member] | Subsequent Event [Member] | Common Stock [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 11,500,000 |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $ 169,500 |  |  |  |  |  |
Business Acquisition, Share Price | $ 14.74 |  |  |  |  |  |
Raycom [Member] | Subsequent Event [Member] | Preferred Stock [Member] | New Preferred Stock [Member] |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $ 650,000 |  |  |  |  |  |
Raycom [Member] | Subsequent Event [Member] | Preferred Stock [Member] | Series A Perpetual Preferred Stock [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 650,000 |  |  |  |  |  |
The WWNY-TV and WNYF-CD [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 45,000 |  |  |  |

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