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Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Taxes at federal statutory rate	$ 6,051	$ 6,184	$ 29,266	$ 19,706
Taxes at federal statutory rate	35.00%	35.00%	35.00%	35.00%
Increase (reduction) in taxes resulting from:
State and local income tax, net of Federal income tax benefit	$ 707	$ 836	$ 4,855	$ 3,215
State and local income tax, net of Federal income tax benefit	4.10%	4.70%	5.80%	5.70%
Other	$ (103)	$ (359)	$ (1,134)	$ (1,193)
Other	(0.60%)	(2.00%)	(1.30%)	(2.10%)
Taxes at effective rate	$ 6,655	$ 6,661	$ 32,987	$ 21,728
Taxes at effective rate	38.50%	37.70%	39.50%	38.60%

X

- Definition

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

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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