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Note 16 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) $ / shares in Units, $ in Millions | Feb. 09, 2022 | Feb. 10, 2022 | Jan. 26, 2022
--- | --- | --- | ---
Dividends Payable, Amount Per Share (in dollars per share) |  |  | $ 0.0625
The 10b5-1 Plan [Member] |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 30 |
Class A Common Stock [Member] |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 38 |
AAT Carriers [Member] |  |  |
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period | $ 25 |  |
AAT Carriers [Member] | Minimum [Member] |  |  |
Expected Purchase Price Including Earnout Achieved | 35 |  |
AAT Carriers [Member] | Maximum [Member] |  |  |
Expected Purchase Price Including Earnout Achieved | $ 55 |  |

X
- Definition Amount of expected consideration to be provided as a purchase price, including any earnout achieved. + References No definition available. + Details
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X
- Definition Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition. + References No definition available. + Details
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X
- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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