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Note 15 - Subsequent Events (Details Textual) - USD ($) $ in Millions |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Nov. 01, 2019 | Oct. 01, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Nov. 06, 2019
Repayments of Long-term Debt, Total |  |  | $ 11 | $ 40 |
Subsequent Event [Member] | Repurchase Outstanding Common Stock (GTN) and/or Class A Common Stock (GTN,A) [Member] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 150
Subsequent Event [Member] | The 2019 Term Loan [Member] | The 2019 Senior Credit Facility [Member] |  |  |  |  |
Repayments of Long-term Debt, Total | $ 100 |  |  |  |
Subsequent Event [Member] | Charlottesville Acquisition [Member] |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 12 |  |  |

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