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Note 13 - Income Taxes - Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income taxes at the federal statutory rate $ 38,469 $ 47,749 $ 23,255
State income taxes, net of federal benefit 4,913 3,246 1,552
Tax effect of permanent differences 596 (4,097) 887
Revaluation of deferred taxes (82,862)
Other, net 129 234 173
Provision (benefit) for income taxes $ 44,107 $ (35,730) $ 25,867