Note 12 - Stock Based Compensation (Details) (USD $)	6 Months Ended			6 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended		18 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2014 Stock Incentive Plan 2007 [Member]	Jun. 30, 2013 Stock Incentive Plan 2007 [Member]	Mar. 31, 2013 Stock Incentive Plan 2007 [Member]	Jun. 30, 2014 Stock Incentive Plan 2007 [Member]	Jun. 30, 2013 Stock Incentive Plan 2007 [Member]	Dec. 31, 2012 Stock Incentive Plan 2007 [Member]	Dec. 31, 2010 Stock Incentive Plan 2007 [Member]	Jun. 30, 2014 Stock Incentive Plan 2007 [Member]	Jun. 13, 2007 Stock Incentive Plan 2007 [Member]	Dec. 31, 2007 Stock Incentive Plan 2001 [Member]	Dec. 31, 2007 Stock Incentive Plan 2004 [Member]
Note 12 - Stock Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	8 years 7 days											10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			3,695,611		3,444,444			3,444,444		944,444	444,444	3,444,444	222,222	148,148	148,148
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized								2,500,000		500,000	222,222
Allocated Share-based Compensation Expense (in Dollars)					$ 1,035,196	$ 471,481		$ 1,721,476	$ 734,673
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)					$ 2,300,000			$ 2,300,000				$ 2,300,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition								2 years 292 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)							$ 4.41	$ 3.19
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)	$ 3.55			$ 3.72
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	19,250			19,250
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,863,329	861,905	1,878,600
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			1,817,011