Note 19 - Equity Incentive Plans (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Annual Increments to Be Vested in Common Stock Units	20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0	0
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options (in Dollars)	$ 128,000	$ 14,800,000	$ 764,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	5,500	594,946	50,024
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)	16,000	307,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			2 years
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		52,431	45,937
Average Per Share Stock Price Issued to Officers As Compensation (in Dollars per share)		$ 21.13	$ 17.16
Restricted Stock Units (RSUs) [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	17,601	25,037	125,133
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$ 24.66	$ 20.68	$ 18.24
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years	2 years
Allocated Share-based Compensation Expense (in Dollars)	3,800,000	2,000,000	1,300,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	6,500,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 146 days
Performance TSR Restricted Stock [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	60,456	119,840
Performance EPS Restricted Stock Units [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	57,642	116,186
Salary Stock [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures (in Dollars)	$ 0	$ 1,100,000	$ 788,000
Equity Incentive Plan [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	7,000,000
2005 Incentive Plan [Member]
Note 19 - Equity Incentive Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,131,854
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	2,984,895

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Number of share options (or share units) exercised during the current period.

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