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Note 13 - Income Taxes (Details) - Reconciliation (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation [Abstract]
Income taxes at the federal statutory rate	$ 28,371	$ 35,414	$ 31,562
State income taxes, net of federal benefit	2,259	2,753	2,795
Tax effect of permanent differences	802	766	621
Other, net	412	(205)	(14)
Provision for income taxes	$ 31,844	$ 38,728	$ 34,964

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

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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