Note 4 - Equity Incentive Plan (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Note 4 - Equity Incentive Plan (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 427,823	$ 422,959
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	4,900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 109 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriodTotalIntrinsicValue	7,131,972	464,241
Proceeds from Other Equity	1,067,767	1,097,016
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber (in Shares)		1,400,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsWeightedAverageExercisePrice (in Dollars per share)		$ 11.70
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingIntrinsicValue		$ 41,100,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageRemainingContractualTerm		6 years 219 days
ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTermRange	10 years
Restricted Stock [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	30,700
Restricted Stock Units (RSUs) [Member] \| Board of Directors [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	9,365
Minimum [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	123,240
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Maximum [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

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Share Based Compensation Arrangement by Share Based Payment Award Contractual Term Range.

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Share-based Compensation Arrangement by Share-based Payment Award, Options, And Stock Appreciation Rights, Exercises in Period, Total Intrinsic Value.

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Share Based Compensation Arrangement by Share Based Payment Award, Options and Stock Appreciation Rights, Outstanding, Intrinsic Value.

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Share Based Compensation Arrangement by Share Based Payment Award Options And Stock Appreciation Rights Outstanding Number.

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Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Outstanding Weighted Average Remaining Contractual Term.

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Share Based Compensation Arrangement by Share Based Payment Award Options and Stock Appreciation Rights Weighted Average Exercise Price.

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- Definition

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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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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- Definition

The cash inflow from other equity not otherwise defined in the taxonomy.

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-Glossary Financing Activities

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

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