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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  |  | 21.00% |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 28.00% | 35.00% |  | 28.00% | 27.00% |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent |  |  |  | 5.00% | 5.00% |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent, Total |  |  |  | 2.00% | 1.00% |
Income Taxes Paid, Net, Total |  |  |  | $ 38 |  |
Proceeds from Income Tax Refunds |  |  |  |  |  | $ 21
Domestic Tax Authority [Member] |  |  |  |  |  |
Operating Loss Carryforwards, Total | $ 204 |  |  | 204 |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |
Operating Loss Carryforwards, Total | $ 567 |  |  | $ 567 |  |
Forecast [Member] |  |  |  |  |  |
Income Taxes Paid, Net, Total |  |  | $ 12 |  |  |

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