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Note 12 - Federal and State Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ (56) | $ (48) | $ (79)
State |  |  |  |  |  |  |  |  | 646 | 189 | 441
Total current income tax provision |  |  |  |  |  |  |  |  | 590 | 141 | 362
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 2,177 | 6,185 | (24,622)
State |  |  |  |  |  |  |  |  | (552) | 1,021 | (8)
Total deferred income tax provision (benefit) |  |  |  |  |  |  |  |  | 1,625 | 7,206 | (24,630)
Total income tax provision (benefit) expense | $ (4,168) | $ 1,264 | $ 2,301 | $ 2,818 | $ 1,883 | $ 3,129 | $ 2,005 | $ 330 | $ 2,215 | $ 7,347 | $ (24,268)

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