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Note 3 - Acquisitions and Divestitures - Unaudited Pro Forma Results (Details) - Raycom [Member] $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) $ / shares
Revenue (less agency commissions) | $ 2,139
Net income | 241
Net income attributable to common stockholders | $ 189
Basic net income attributable to common stockholders, per share (in dollars per share) | $ / shares | $ 2.43
Diluted net income attributable to common stockholders, per share (in dollars per share) | $ / shares | $ 2.41

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