Note 16 - Equity Based Compensation (Details) - Stock Options Outstanding (2011 Stock Incentive Plan [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-average exercise price
Options outstanding	402,001
Options outstanding, weighted-average remaining contractual life	6 years 153 days
Options outstanding, value of in-the-money stock options	$ 3,254,489
Options exercisable	125,333
Options exercisable, weighted-average remaining contractual life	6 years 69 days
Options exercisable, value of in-the-money stock options	1,061,551
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-average exercise price	$ 10.40
Options outstanding	312,501
Options outstanding, weighted-average remaining contractual life	6 years 47 days
Options outstanding, value of in-the-money stock options	2,687,509
Options exercisable	104,167
Options exercisable, weighted-average remaining contractual life	6 years 47 days
Options exercisable, value of in-the-money stock options	895,836
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-average exercise price	$ 11.00
Options outstanding	59,500
Options outstanding, weighted-average remaining contractual life	6 years 109 days
Options outstanding, value of in-the-money stock options	476,000
Options exercisable	19,833
Options exercisable, weighted-average remaining contractual life	6 years 109 days
Options exercisable, value of in-the-money stock options	158,664
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-average exercise price	$ 12.96
Options outstanding	4,000
Options outstanding, weighted-average remaining contractual life	8 years 324 days
Options outstanding, value of in-the-money stock options	24,160
Options exercisable	1,333
Options exercisable, weighted-average remaining contractual life	8 years 324 days
Options exercisable, value of in-the-money stock options	8,051
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-average exercise price	$ 16.43
Options outstanding	26,000
Options outstanding, weighted-average remaining contractual life	9 years 262 days
Options outstanding, value of in-the-money stock options	$ 66,820