Note 13 - Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income taxes at the federal statutory rate	$ 39,530	$ 38,469	$ 47,749
State income taxes, net of federal benefit	5,303	4,913	3,246
Tax effect of permanent differences	1,562	596	(4,097)
Revaluation of deferred taxes	0	0	(82,862)
Other, net	1,545	129	234
Provision (benefit) for income taxes	$ 47,940	$ 44,107	$ (35,730)

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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