Annual report pursuant to Section 13 and 15(d)

Note 16 - Income Taxes - Reconciliation From Federal Income Tax Statutory Rates to Income Before Income Taxes (Details)

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Note 16 - Income Taxes - Reconciliation From Federal Income Tax Statutory Rates to Income Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income tax at statutory federal rate, amount $ 35,457 $ 48,073 $ 38,786
Income tax at statutory federal rate, pre-tax earnings 21.00% 35.00% 35.00%
State income tax, net of federal tax effect, amount $ 808 $ 43 $ 254
State income tax, net of federal tax effect, pre-tax earnings 0.48% 0.03% 0.23%
Tax-exempt income, net of expenses, amount $ (655) $ (1,356) $ (1,322)
Tax-exempt income, net of expenses, pre-tax earnings (0.39%) (0.99%) (1.20%)
Bank owned life insurance contracts, amount $ (657) $ (1,096) $ (978)
Bank owned life insurance contracts, pre-tax earnings (0.39%) (0.80%) (0.88%)
Excess tax benefit from stock compensation, amount $ (3,118) $ (4,278)  
Excess tax benefit from stock compensation, pre-tax earnings (1.84%) (3.11%)  
Federal tax credits, amount $ (113) $ (234) $ (2,652)
Federal tax credits, pre-tax earnings (0.07%) (0.17%) (2.40%)
Other, amount $ 180 $ (2) $ 39
Other, pre-tax earnings 0.10% 0.04%
Effective income tax and rate, amount $ 31,902 $ 44,258 $ 29,339
Effective income tax and rate, pre-tax earnings 18.89% 32.22% 26.47%
Enacted tax rate change, amount   $ 3,108  
Enacted tax rate change, pre-tax earnings   2.26%  
Excess tax benefit from stock compensation, amount     $ (4,788)
Excess tax benefit from stock compensation, pre-tax earnings     (4.32%)