Note 4 - Equity Incentive Plan (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 4 - Equity Incentive Plan (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 377,960	$ 365,367	$ 805,782	$ 788,326
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	9,000		132,240
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	4,600,000		4,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			3 years 73 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriodTotalIntrinsicValue			25,396,552	599,010
Proceeds from Other Equity	294,106	30,859
Proceeds from Stock Options Exercised			1,361,805	1,127,875
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingNumber (in Shares)			979,815
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsWeightedAverageExercisePrice (in Dollars per share)	$ 13.31		$ 13.31
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingIntrinsicValue	$ 32,400,000		$ 32,400,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageRemainingContractualTerm			6 years 292 days
ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTermRange			10 years
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
Restricted Stock Units (RSUs) [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)	0
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
Stock Appreciation Rights (SARs) [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
Stock Repurchased and Retired During Period, Shares (in Shares)	133,774
Minimum [Member]
Note 4 - Equity Incentive Plan (Details) [Line Items]
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