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Note 14 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) $ in Millions | Nov. 04, 2020 | Nov. 03, 2020 | Oct. 19, 2020
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The 2030 Notes [Member] |  |  |
Debt Instrument, Face Amount |  |  | $ 800
Debt Instrument, Interest Rate, Stated Percentage |  |  | 4.75%
Gray's Share Repurchase Program [Member] |  |  |
Stock Repurchase Program, Additional Authorized Amount | $ 150 |  |
Stock Repurchase Program, Authorized Amount | $ 220 |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 70 |

X
- Definition Represents additional amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Details
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