Note 12 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Taxes at federal statutory rate	$ 6,130	$ 5,312
Taxes at federal statutory rate, percentage	35.00%	35.00%
Increase (reduction) in taxes resulting from:
State and local income tax, net of Federal income tax benefit	$ 328	$ 564
State and local income tax, net of Federal income tax benefit, percentage	1.90%	3.70%
Other	$ (1,204)	$ (261)
Other, percentage	(6.90%)	(1.70%)
Total taxes	$ 5,254	$ 5,615
Taxes at effective rate, percentage	30.00%	37.00%

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

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