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Note 10 - Income Taxes - Income Tax Provisions (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Federal tax provision, current |  |  |  |  |  |  |  |  | $ 9,183 | $ 14,859 | $ 34,996
Federal tax provision, deferred |  |  |  |  |  |  |  |  | (609) | 7,985 | (1,416)
Total federal tax provision |  |  |  |  |  |  |  |  | 8,574 | 22,844 | 33,580
State and local tax provision, current |  |  |  |  |  |  |  |  | 3,876 | 1,419 | 7,647
State and local tax provision, deferred |  |  |  |  |  |  |  |  | (2,055) | 750 | (124)
Total state and local tax provision |  |  |  |  |  |  |  |  | 1,821 | 2,169 | 7,523
Total income tax provision | $ 1,046 | $ 1,910 | $ 4,489 | $ 2,950 | $ 7,693 | $ 5,291 | $ 6,775 | $ 5,254 | $ 10,395 | $ 25,013 | $ 41,103

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