Note 21 - Condensed Financial Information (Parent Company Only) (Details) - Condensed Statements of Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INCOME
Provision for income taxes	$ 14,602us-gaap_IncomeTaxExpenseBenefit	$ 9,305us-gaap_IncomeTaxExpenseBenefit	$ 12,331us-gaap_IncomeTaxExpenseBenefit
NET INCOME	35,688us-gaap_NetIncomeLoss	23,231us-gaap_NetIncomeLoss	27,684us-gaap_NetIncomeLoss
Parent Company [Member]
INCOME
Dividends from subsidiaries	43,366	23,051	45,061
Other income	6,927	8,409	7,155
	50,293	31,460	52,216
EXPENSE	23,024	17,839	15,830
Income before income taxes and equity in undistributed net income of subsidiaries	27,269	13,621	36,386
Provision for income taxes	(6,330)	(3,510)	(3,195)
Income before equity in undistributed net income of subsidiaries	33,599	17,131	39,581
Equity in (distribution in excess of) undistributed net income of subsidiaries	2,089	6,100	(11,897)
NET INCOME	$ 35,688	$ 23,231	$ 27,684

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Income before equity in undistributed net income of subsidiaries.

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No definition available.

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Total costs of sales and operating expenses for the period.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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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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Amount of dividend income on nonoperating securities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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